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33results about How to "Thermoreversible" patented technology
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Polymer hydrogel and preparation method thereof
The invention provides a polymer hydrogel and a preparation method thereof. The polymer hydrogel is formed by gelators through mutual physical interaction, wherein the gelators comprise nano materials with reactive functional groups and macromolecular chains which are grafted on the surfaces of the nano materials through the reactive functional groups. The gel is physical gel, has thermal reversibility and meanwhile has high strength and hydroscopicity.
Owner:TSINGHUA UNIV
Preparation method and application of bicontinuous emulsion gel
The invention discloses a preparation method and application of bicontinuous emulsion gel, and belongs to the technical field of food gel emulsification. The method comprises the following steps: respectively adding food-grade gel factors into an oil phase, and generating a fat crystal network in the oil phase to solidify the oil phase; adding polysaccharide into a water phase to form a hydrogel three-dimensional network space structure to solidify the water phase; and performing high-speed shearing on the two phases to form the ultra-stable bicontinuous emulsion gel. The emulsion gel obtainedby the invention has extremely low contents of trans-fatty acid and saturated fatty acid, can be applied to the filling of smearing fat and baking products, serves as an effective way for reducing the content of fat in food, can also transport hydrophobic and hydrophilic nutrient substances with high loading capacity simultaneously, and has potential application value in the fields of food, medicine and the like.
Owner:JIANGNAN UNIV
Cereal protein-based carotenoid emulsion gel and preparation method thereof and application
The invention discloses a cereal protein-based carotenoid emulsion gel and a preparation method thereof and application. The preparation method comprises the steps of dissolving cereal protein and insoluble carotenoid in heated glycerin, causing the heating temperature to be 40-180 DEG C, and forming a clear transparent mixed dispersion liquid with stirring; preheating edible oil at 40-120 DEG C; adding the preheated edible oil dropwise into the glycerin mixed liquid of the cereal protein and carotenoid, performing shearing and homogenization, and obtaining the cereal protein-based carotenoid emulsion gel. The cereal protein-based carotenoid emulsion gel not only is simple in process, needs no complex device and is low in cost and controllable in process, but also is safe and environmentally friendly; the product is luminous yellow, and the flavor is good. The cereal protein-based carotenoid emulsion gel can be used for various foods, the sensory value, edible value and nutritional value are enhanced, and the cereal protein-based carotenoid emulsion gel can particularly serve as smearing oil and shortening to be applied to baked foods such as breads, cakes and biscuits and become a novel healthy food ingredient.
Owner:SOUTH CHINA UNIV OF TECH
Acid vagina lubricant and preparation method and use thereof
InactiveCN101905041AImprove drynessThermoreversibleSurgerySodium carboxymethylcellulosePharmaceutical preservatives
The invention discloses an acid vagina lubricant and a preparation method and use thereof. Based on the total weight of the lubricant, the acid vagina lubricant comprises the following components in percentage by weight: (a) 15 to 30 percent of substrate excipient, (b) 5 to 15 percent of viscous agent, (c) 20 to 40 percent of wetting agent and (d) 1 to 7 percent of acid buffer, wherein the substrate excipient is selected from polyoxyethylene polyoxypropylene polymer, carbomer, alginic acid or chitosan; the viscous agent is selected from xanthan gum, hydroxy propyl cellulose (HPC), hydroxypropyl methyl cellulose (HPMC) and sodium carboxymethylcellulose (CMC-Na); the wetting agent is selected from asparagus, glycerin, polysorbate, polyethylene glycol, propylene glycol or triacetin; and the acid buffer is selected from an acetic acid buffer pair, a boric acid buffer pair, a carbonic acid buffer pair, a phosphoric acid buffer pair or a citric acid buffer pair; and the acid vagina lubricant has the properties that: pH is between 3.0 and 4.5; and the lubricant is in liquid state at the temperature of less than or equal to 25 DEG C and in gel state at the temperature of more than or equal to 30 DEG C.
Owner:SHANGHAI INST OF PLANNED PARENTHOOD RES
Liquid milk product containing gellan gum particle and producing method thereof
The invention provides a liquid milk product containing gellan gum and a production method thereof. The liquid milk product contains milk and gellan gum particles (0.1-5 wt% of the total weight of the liquid milk product) for chewy mouthfeel. The production method comprises dissolving gellan gum in water to obtain gellan gum waster solution, adding into milk under stirring, and allowing coagulation of gellan gum in milk to form granules. The inventive liquid milk product enriches the varieties of liquid milk products, and achieves good stability within shelf life through reasonable formulation and proper process.
Owner:INNER MONGOLIA YILI INDUSTRIAL GROUP CO LTD
N-amino alkyl substituted glucosamide as well as preparation method and application thereof
InactiveCN105175388AThermoreversibleThixotropicOrganic chemistryThixotropic paintsSolventGel forming
The invention discloses N-amino alkyl substituted glucosamide as well as a preparation method and an application thereof. The N-amino alkyl substituted glucosamide is shown in formula (I), wherein n=2, 4, 6, 8 or 12. Supra-molecular gel formed by the N-amino alkyl substituted glucosamide in a solvent has thermal reversibility and thixotropy. Two-component gel formed by the N-amino alkyl substituted glucosamide in a solvent also has thermal reversibility and thixotropy. The instantaneous response rate after thixotropy is high, full response can be realized, and the thixotropy process is reversible and can be repeated. Gel with thixotropy is expected to be used in fields of coating, paint, pigment and the like.
Owner:TIANJIN UNIV
Antibacterial gel and preparation method thereof
ActiveCN107233226AIncrease profitAvoid the influence of steric hindranceCosmetic preparationsToilet preparationsMorpholineBiological activation
The invention discloses antibacterial gel and a preparation method thereof, and belongs to the field of gel preparation. The antibacterial gel comprises deacylation gellan gum, nisin, 2-(N-morpholine) ethanesulfonic acid, 1-(3-dimethylamino propyl)-3-ethyl carbodi-imide hydrochloride, N-hydroxy succinimide thiosulfate and deionized water. The preparation method includes the steps: resin pretreatment; solution preparation; activation; acylation; dialysis; gel forming. The deacylation gellan gum is covalently grafted to the nisin to form the antibacterial gel, so that the antibacterial gel has the advantages the antibacterial gel is high in grafting ratio, low in cost, easy to form, easily formed, thermally reversible, free from toxicity and the like, and the antibacterial gel is suitable for preparation of antibacterial washing gel.
Owner:JIANGNAN UNIV +1
Acidic biological adhesion heat-variable gelling agent, its preparing method and uses
ActiveCN101172159AThermoreversibleInsulationOrganic active ingredientsPharmaceutical delivery mechanismDiseaseLiquid state
The invention discloses acidic biologic adhesion heat-variable gelling agent, which includes (a) 12-20 wt percent of polyoxy ethylene polyoxy propylene polymer, (b) 0.5-10wt percent of polydimethyl siloxane and (c) 1.0-2.5 wt percent of acidity buffering agent. The invention is characterized in that a pH value is 3.0 to 4.5, the gelling agent is under a liquid state at the temperature less than and equal to 28 DEG C, and is under a gel state at the temperature more than and equal to 32 DEG C. The acidic biologic adhesion heat-variable gelling agent is used to prepare liquid preparation with the function of both contraception and preventative spread disease (STDs / HIV). The acidic biologic adhesion heat-variable gelling agent provides reformation and convenience for a production process, the loading and filling operation of the liquid medicine is convenient, the filling amount is accurate, and the invention particularly is suitable for GMP scale production and becomes an optimal substitute of a contraceptive sheath or lubricating additive.
Owner:上海市生物医药技术研究院
Lubricating oil composition and lubricating system using the composition
InactiveCN101275100AThermoreversibleImprove extreme pressure performanceAdditivesBase-materialsLubricationChemical composition
The invention provides a lubricant composition in a semisolid state at constant temperature displaying highly dynamic friction coefficient beneficial to transmission and coating little oil solution on a lubricate slippery section with high lubricity in a thin film state and a lubrication system using the same. The lubricant composition comprises hydrocarbon-based oil of 10 mass% to 98.9 mass% with %Cp less than 70, at least one of organic phosphate and polysiloxane, alkaline-earth metal salts of 1 mass% to 20 mass% and amide compound of 0.1 mass% to 89 mass% as well as lubricant composition in semisolid state at constant temperature. The lubricant composition is used for the lubrication system for transmission of key mechanisms.
Owner:JAPAN ENERGY CORP
Preparation method and application for amphiphilic naphthoyl diimide gelator
ActiveCN107674074AThermoreversibleThe synthesis method is simpleOrganic chemistryGel preparationSolution stateTetrahydrofuran
The invention belongs to the technical field of supramolecular chemistry, and specifically relates to a preparation method and an application for an amphiphilic naphthoyl diimide gelator. The amphiphilic naphthoyl diimide gelator provided by the invention has a molecular formula of C89H138N4O21, and can enable benzene, toluene, xylene, dimethyl sulfoxide (DMSO) or a tetrahydrofuran solution with awater content of 30% (H2O-THF with a concentration of 30%) to generate gelation at a low concentration (3.3 mg.mL<-1> to 9.5 mg.mL<-1> through a heating-cooling method. Meanwhile, the molecular gel formed by gelation can realize reversible conversion between a solution state and a gel state through the external action of heating-cooling. The gelator provided by the invention has the advantages ofsimple synthesis, easily modified structure, thermal reversibility, large polarity range of a gelated solvent, etc., and has potential application values in fields like catalysis, sensor technologies, drug delivery and chiral separation.
Owner:XINYANG NORMAL UNIVERSITY
Process for extracting and purifying moringa oleifera polysaccharide
InactiveCN107573439AThe process of operation is simpleLow raw material costActivated carbonGyrotron oscillator
The invention discloses a process for extracting and purifying moringa oleifera polysaccharide. The process comprises the following steps: preparing dried moringa oleifera leaf powder, performing backflow extraction twice at 80 DEG C in the presence of petroleum ether and 80% ethanol, and filtering so as to obtain degreased filter residue of which monosaccharide and polysaccharide are removed; putting distilled water 10-15 times the filter residue, performing backflow extraction for three times at 85-90 DEG C, performing vacuum filtration on an extract, concentrating, extracting, and further concentrating; mixing a concentrated liquid with n-butyl alcohol and chloroform in a ratio of 1:1:4, oscillating for 15-20 minutes in a rotary oscillator, performing centrifugal separation to remove protein and a chloroform layer, and collecting centrifugate; and decoloring the centrifugate with activated carbon, concentrating, heating concentrated liquid to 60-75 DEG C, and rapidly cooling to 38-40 DEG C, thereby obtaining cured moringa oleifera polysaccharide. Moringa oleifera polysaccharide extracted by using the process disclosed by the invention is high in extraction rate and purity, has thermal reversibility and is good in processing and use performance.
Owner:隆安县荣胜养殖有限公司
Hybrid gel for lard substitute of shredded cake and preparation method of hybrid gel
PendingCN113729083AReduce oxidation rateExtended shelf lifeEdible oils/fats ingredientsDough treatmentBiotechnologyGellan gum
The invention discloses a hybrid gel for a lard substitute of a shredded cake. The hybrid gel comprises the following components: a base material, a lipid substance and water, the base material is prepared from glycerin monostearate, biological wax and colloid; the lipid substance is vegetable oil, and the colloid is carrageenan, gellan gum and the like. According to the hybrid gel for the lard substitute of the shredded cake and a preparation method of the hybrid gel, the lard substitute prepared by the preparation method adopts edible colloid, the vegetable oil and other materials, and compared with a common lard substitute, oil gel and hydrogel are adopted to prepare the hybrid gel, so that the fat content and the production cost of a dough are reduced. Researches show that the hybrid gel is of an oil-in-water structure, and the structure can slow down oxidation of the vegetable oil. Under the synergistic effect of the oil gel and the hydrogel in the hybrid gel, the hardness and viscosity of the hybrid gel are higher than those of lard oil, and the prepared shredded pancake dough has better chewiness and elasticity. The physical property of the hybrid gel is similar to that of the lard oil, so that the use process of the hybrid gel is consistent with that of the lard oil, and the shredded cake made by replacing the lard oil has a better taste.
Owner:TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Pyrazolyl ureido-based polyurea urethane, and preparation method and application thereof
The invention belongs to the field of polyurea urethane materials, and provides pyrazolyl ureido-based polyurea urethane which is obtained by reaction of a pyrazolyl compound, a sulfydryl compound andan isocyanate compound; the reaction can be realized at room temperature, the method is simple, the preparation cost is low, and the method is suitable for large-scale industrial production. The pyrazolyl ureido-containing polyurea urethane has thermal reversibility, is relatively stable at room temperature, can be spontaneously dissociated into a compound containing isocyanate and pyrazole whenthe temperature rises to 80 DEG C or above, and can be subjected to hot press molding and reaction again to obtain the pyrazolyl ureido-based polyurea urethane. Compared with a dynamic sterically hindered urea bond dissociated at room temperature, the pyrazolyl ureido-based polyurea urethane has higher hydrolysis resistance, the practicability of the pyrazolyl ureido-based polyurea urethane product is greatly improved, and recycling of the thermosetting polyurea urethane can be realized.
Owner:INST OF CHEM CHINESE ACAD OF SCI
Method of freezing Schwann cells by compound low-temperature cryopreserving system
ActiveCN106982820AReduce osmotic damageLow permeability coefficientDead animal preservationCell culture mediaLiquid nitrogen
The invention discloses a method of freezing Schwann cells by a compound low-temperature cryopreserving system. The method comprises the following steps of: heating amino acid gel factors and dissolving the same in a cell culture medium, filtering and degerming the cell culture medium, and preparing a cell suspension liquid with the cell culture medium containing the gel factors; dropwise adding a cell culture medium containing a compound freezing protecting agent into the cell suspension liquid at 0-4 DEG C and uniformly mixing the mixture, wherein the compound freezing protecting agent is prepared by mixing a permeable freezing protecting agent and a non-permeable freezing protecting agent; and putting a cryopreserving tube in a programmed cryopreserving box to be frozen for 24h at 80 DEG C below and then transferring the cryopreserving tube to liquid nitrogen to be cryopreserved. The supermolecular gel formed by self-assembling the amino acid gel factors has a unique three-dimensional netty structure. When the freezing protecting agent is dropwise added, cells are coated by the supermolecular gel, so that the permeating damage of the freezing protecting agent is reduced; in temperature-reducing and restoring processes, damage of ice crystals is reduced as the three-dimensional netty structure of the supermolecular gel limits growth and recrystallization of the ice crystals.
Owner:WUHAN UNIV OF TECH
Fluorescent inset pasting device
ActiveCN108669032AArmyworm works wellIncrease scatteringInsect catchers and killersEngineeringColloid
The invention discloses a fluorescent inset pasting device and relates to the field of inset pasting devices. The fluorescent inset pasting device includes an upper cover, a lower cover and multiple inset pasting plates clamped between the upper cover and the lower cover; the upper surfaces of the inset pasting plates are coated with inset pasting glue, and the inset pasting plates can be dividedinto the blue inset pasting plates and the yellow inset pasting plates; heat collecting plates are embedded in both the blue inset pasting plates and the yellow inset pasting plates, and inset inducing bags are clamped to the heat collecting plates and filled with glue mixed with inset pheromone, wherein the glue is thermal-sensing response gel which stays in a gel state at 40-70 DEG C and stays in a sol state at 10-30 DEG C; the surfaces of the blue inset pasting plates are coated with inset pasting glue mixed with a blue material with steady persistence, and the surfaces of the yellow insetpasting plates are coated with inset pasting glue mixed with a yellow material with steady persistence. The fluorescent inset pasting device can emit a specific light source to entice insets, the efficiency of pasting the insets can be improved under cooperation with the insect pheromone, and through combination of the inset pheromone and the thermal-sensing gel, waste of the inset pheromone can be avoided.
Owner:SOUTHWEST UNIVERSITY
A heat-sensitive electronic cigarette liquid and its preparation
ActiveCN104256888BChange storage formatThermoreversibleTobacco treatmentTobacco devicesCarrageenanLiquid smoke
The invention discloses heat-sensitivity electronic tobacco juice. The heat-sensitivity electronic tobacco juice comprises, by weight, 5%-8% of tobacco extracting solutions, 0.1%-3.5% of nicotine, 0.1%-2% of acidity regulators, 2%-3% of tobacco essence, 0.4%-8% of thickening agents, 15%-35% of water and the balance propylene glycol; the sum of all components is 100, and the components are evenly mixed to prepare the heat-sensitivity electronic tobacco juice. The thickening agents are one or more of gelatin, agar, acquirable burning rubber and carrageenan. The heat-sensitivity electronic tobacco juice has the heat sensitivity because of containing the thickening agents, and when the heating temperature ranges from 50 DEG C to 80 DEG C, the electronic tobacco juice is in the liquid state; when heating is stopped, the electronic tobacco juice liquidated by heating is cooled to restore to the solid state and is free of random flowing, so that the problems of liquid leakage, backflowing and volatilization of the electronic tobacco juice in the storage process and the transporting process are effectively solved, and a consumer can conveniently take and use the electronic tobacco juice. The heat-sensitivity electronic tobacco juice can be stored for a long time, and the quality, the taste and the like of the electronic tobacco juice all keep unchanged in the storage period.
Owner:CHINA TOBACCO JIANGSU INDAL
Preparation method and application of naphthalene diimide gelator with symmetric structure
InactiveCN108503639AThermoreversibleResponsive to oscillating stimuliOrganic chemistryGel preparationBenzeneSolution state
The invention discloses a preparation method and application of a naphthalene diimide gelator with a symmetric structure. The naphthalene diimide gelator with the symmetric structure has a molecular formula: C104H168N4O12 and is capable of gelatinizing cyclohexane, benzene, methylbenzene and dimethylbenzene under low concentration (4.0mg mL<-1>-9.8mg mL<-1>) by using a heating-cooling method. In addition, molecular gel formed after gelatinization is reversible between a solution state and a gel state under an external action of heating-cooling or mechanical oscillation. The gelator provided bythe invention is simple in synthesis and easily-modified in structure, has the advantages such as thermal reversibility, oscillation stimulation responsiveness and the like and has a potential application value in the field such as catalysis, sensing technologies, drug delivery and chiral separation.
Owner:XINYANG NORMAL UNIVERSITY
Supermolecular gel used for protecting photostability of vitamin A derivatives
InactiveCN101869546ASimple preparation processEasy to operateCosmetic preparationsSenses disorderBiocompatibility TestingSolvent
The invention provides a supermolecular gel used for protecting the photostability of vitamin A derivatives. The supermolecular gel is a non-flowing quasi solid gel formed by molecular assembly of gel factors in a mixed solvent of organic solvent and absolute ethyl alcohol. The supermolecular gel used for protecting the photostability of the vitamin A derivatives has the characteristics of good biocompatibility, simple manufacture, easy operation, less introduced chemical substances, no toxin or harm, good protection effect, thermal reversibility and the like; when the phase inversion temperature of the supermolecular gel approaches body temperature, the gel is converted into solution, and the vitamin A derivatives are easy to release onto skin surface; the encapsulation quantity of the vitamin A derivatives can reach 100 percent, and the release quantity can also be regulated according to the concentration of the encapsulated vitamin A derivatives and the concentration of the gel factors; and the supermolecular gel can be widely applied to the fields of biomedical materials, cosmetics and the like.
Owner:HUAZHONG UNIV OF SCI & TECH
Pomegranate-shaped spring roll and manufacturing method thereof
The invention relates to a pomegranate-shaped spring roll and a manufacturing method thereof. The pomegranate-shaped spring roll comprises a spring roll wrapper, a spring roll stuffing and sprouts, wherein the spring roll stuffing consists of three layers which are sequentially a quicksand sandwich, a glutinous rice flour paste layer and a linseed layer from the inside out; the quicksand sandwich comprises cooked salted duck egg yellow, gelatin, butter, sand sugar, custard flour, milk powder and water; the glutinous rice flour paste layer comprises flour starch, white granulated sugar, water and glutinous rice flour. The preparation method of the pomegranate-shaped spring roll comprises the four steps of preparing spring roll wrappers, making glutinous rice flour pastes, preparing the quicksand sandwich and shaping. The invention has the following benefits: the cooked salted duck egg yellow has the effects of moistening lung, nourishing yin and supplementing blood and soothing the nerves to aid sleep; the linseed is used for preventing cardiovascular diseases; besides, the pomegranate-shaped spring roll has the effects of improving the fat content of skin, promoting the pressure resistance, lowering cholesterol and promoting brain development of children.
Owner:TIANJIN AOLV AGRI & SIDELINE PROD GRP
Amidation mesona chinensis benth glue and preparation method thereof
The invention discloses an amidation mesona chinensis benth glue and a preparation method thereof. The amidation mesona chinensis benth glue is prepared by adopting the following steps: adopting a mesona chinensis benth glue as a raw material, adopting an ammonia alcohol solution comprising ammonia water and isopropanol as an amidation reagent, carrying out an amidation reaction of the ammonia alcohol solution and a mesona chinensis benth glue aqueous solution for 95-125 min, and carrying out centrifugation on the obtained reaction solution; placing the obtained precipitate in 3-5 times by volume of a hydrochloric acid-isopropanol mixing solution, stirring for 10 min, carrying out vacuum suction filtration, washing, drying at a temperature of 105 DEG C, and grinding to obtain the amidation mesona chinensis benth glue. The preparation method comprises two steps such as solution preparation and amidation mesona chinensis benth glue preparation. According to the amidation mesona chinensis benth glue, the defect that the single mesona chinensis benth glue can not form a gel and can form a gel through interaction with starch is changed, a gelation performance of the mesona chinensis benth glue is changed, and the single mesona chinensis benth glue can form the gel.
Owner:SHANGHAI INST OF TECH
Gel propellant adopted as aerospace fuel, preparation method and uses thereof
InactiveCN107226768AImproved rheological propertiesThermoreversibleNon-explosive fillers/gelling/thickening agentsPressure gas generationSolventChemistry
The invention discloses a gel propellant adopted as an aerospace fuel, a preparation method and uses thereof. The preparation method comprises: adding acetal substituted glucamide to a solvent to achieve the acetal substituted glucamide content of 1-30 mg / mL, heating to a temperature of 150-180 DEG C under stirring, stopping the stirring, and cooling to a room temperature, wherein the solvent is JP-10 or RP-1. According to the present invention, the gel propellant adopted as the aerospace fuel has heat reversibility and thixotropy, has the high instantaneous recovering rate after the thixotropy, and can achieve the completely recovering state; the rheological property of the gel can be improved by adding the combustion-supporting agent nanometer powder; and the obtained gel propellant can be used as the aerospace fuel.
Owner:TIANJIN UNIV
A kind of furyl glycidyl ether and its synthesis method and application
The invention discloses furyl glycidyl ether of which the structural formula (I) is as shown in the specification. In the formula (I), R is C1-C2 alkyl or as shown in formula (II); and in the formula (II), n is 1-10, and R1 is H, methyl or ethyl. The invention further discloses a preparation method of the furyl glycidyl ether. The furyl glycidyl ether has a long-chain structure, so that epoxy resin has excellent toughness; Diels-Alder reaction of furan and maleimide has thermal reversibility, the toughness of the epoxy resin can be adjusted through thermal treatment, and the furyl glycidyl ether can be applied to toughness improvement on the epoxy resin.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Acidic biological adhesion heat-variable gelling agent, its preparing method and uses
ActiveCN101172159BThermoreversibleInsulationOrganic active ingredientsPharmaceutical delivery mechanismDiseaseHeat sensitive
The invention discloses acidic biologic adhesion heat-variable gelling agent, which includes (a) 12-20 wt percent of polyoxy ethylene polyoxy propylene polymer, (b) 0.5-10wt percent of polydimethyl siloxane and (c) 1.0-2.5 wt percent of acidity buffering agent. The invention is characterized in that a pH value is 3.0 to 4.5, the gelling agent is under a liquid state at the temperature less than and equal to 28 DEG C, and is under a gel state at the temperature more than and equal to 32 DEG C. The acidic biologic adhesion heat-variable gelling agent is used to prepare liquid preparation with the function of both contraception and preventative spread disease (STDs / HIV). The acidic biologic adhesion heat-variable gelling agent provides reformation and convenience for a production process, the loading and filling operation of the liquid medicine is convenient, the filling amount is accurate, and the invention particularly is suitable for GMP scale production and becomes an optimal substitute of a contraceptive sheath or lubricating additive.
Owner:上海市生物医药技术研究院
Supermolecular gel used for protecting photostability of vitamin A derivatives and its preparation method
InactiveCN101869546BSimple preparation processEasy to operateCosmetic preparationsSenses disorderBiocompatibility TestingSolvent
The invention provides a supermolecular gel used for protecting the photostability of vitamin A derivatives. The supermolecular gel is a non-flowing quasi solid gel formed by molecular assembly of gel factors in a mixed solvent of organic solvent and absolute ethyl alcohol. The supermolecular gel used for protecting the photostability of the vitamin A derivatives has the characteristics of good biocompatibility, simple manufacture, easy operation, less introduced chemical substances, no toxin or harm, good protection effect, thermal reversibility and the like; when the phase inversion temperature of the supermolecular gel approaches body temperature, the gel is converted into solution, and the vitamin A derivatives are easy to release onto skin surface; the encapsulation quantity of the vitamin A derivatives can reach 100 percent, and the release quantity can also be regulated according to the concentration of the encapsulated vitamin A derivatives and the concentration of the gel factors; and the supermolecular gel can be widely applied to the fields of biomedical materials, cosmetics and the like.
Owner:HUAZHONG UNIV OF SCI & TECH
Piperazinyl ionic liquid surfactant as well as synthesis method and application thereof
ActiveCN112707875AEasy to manufactureLow costOrganic compound preparationTransportation and packagingIsopropylActive agent
The invention discloses a piperazinyl ionic liquid surfactant, which has a chemical structural general formula shown in the specification, wherein R1 is methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, hydroxyethyl, hydroxypropyl, formyl or phenyl, and R2 is a straight-chain alkyl group of C9-C17. The invention further discloses a synthetic method of the piperazinyl ionic liquid surfactant, the process is simple, the period is short, and the product purity can reach 97% or above. The invention also discloses application of the piperazinyl ionic liquid surfactant as a microemulsion component and a microemulsion gel component.
Owner:GUANGDONG PHARMA UNIV
A kind of antibacterial gel and preparation method thereof
ActiveCN107233226BIncrease profitAvoid the influence of steric hindranceCosmetic preparationsToilet preparationsGel preparationPolymer science
The invention discloses antibacterial gel and a preparation method thereof, and belongs to the field of gel preparation. The antibacterial gel comprises deacylation gellan gum, nisin, 2-(N-morpholine) ethanesulfonic acid, 1-(3-dimethylamino propyl)-3-ethyl carbodi-imide hydrochloride, N-hydroxy succinimide thiosulfate and deionized water. The preparation method includes the steps: resin pretreatment; solution preparation; activation; acylation; dialysis; gel forming. The deacylation gellan gum is covalently grafted to the nisin to form the antibacterial gel, so that the antibacterial gel has the advantages the antibacterial gel is high in grafting ratio, low in cost, easy to form, easily formed, thermally reversible, free from toxicity and the like, and the antibacterial gel is suitable for preparation of antibacterial washing gel.
Owner:JIANGNAN UNIV +1
Photoreversible discoloration anti-counterfeiting paper and preparation method thereof
ActiveCN104988793BWith photoreversible discoloration propertiesEasy to operateDefoamers additionCoatings with pigmentsPaper manufacturingPaper based
The invention belongs to the technical field of anti-counterfeit paper manufacturing, and particularly discloses reversible photochromic anti-counterfeit paper and a preparation method thereof. The reversible photochromic anti-counterfeit paper is composed of a reversible color-shifting coating and paper-base carrier materials, the reversible color-shifting coating is composed of paint including reversible photochromic substances, and the paper-base carrier materials are formed by one or two fibrous materials of bleached softwood or bleached broadleaf wood through perpermaking. The preparation method comprises the steps that the reversible photochromic substances are added into the paint to be made into the reversible photochromic paint; the surfaces of the paper-base carrier materials are coated with a reversible photochromic paint, a reversible photochromic coating is formed after drying is conducted, and the reversible photochromic anti-counterfeit paper is obtained. According to the reversible photochromic anti-counterfeit paper and the preparation method thereof, the reversible photochromic substances are added into the paint to be applied to anti-counterfeit paper, and the reversible photochromic anti-counterfeit paper and the preparation method thereof have the advantages of being fast in detection, good in thermal stability, long in retention cycle, good in reversibility of color change and strong in anti-counterfeit capacity.
Owner:SOUTH CHINA UNIV OF TECH
Polymer hydrogel and preparation method thereof
Owner:TSINGHUA UNIV
Method for freezing Schwann cells in compound cryopreservation system
ActiveCN106982820BPromote degradationImprove thixotropyDead animal preservationCell culture mediaOrganic chemistry
The invention discloses a method of freezing Schwann cells by a compound low-temperature cryopreserving system. The method comprises the following steps of: heating amino acid gel factors and dissolving the same in a cell culture medium, filtering and degerming the cell culture medium, and preparing a cell suspension liquid with the cell culture medium containing the gel factors; dropwise adding a cell culture medium containing a compound freezing protecting agent into the cell suspension liquid at 0-4 DEG C and uniformly mixing the mixture, wherein the compound freezing protecting agent is prepared by mixing a permeable freezing protecting agent and a non-permeable freezing protecting agent; and putting a cryopreserving tube in a programmed cryopreserving box to be frozen for 24h at 80 DEG C below and then transferring the cryopreserving tube to liquid nitrogen to be cryopreserved. The supermolecular gel formed by self-assembling the amino acid gel factors has a unique three-dimensional netty structure. When the freezing protecting agent is dropwise added, cells are coated by the supermolecular gel, so that the permeating damage of the freezing protecting agent is reduced; in temperature-reducing and restoring processes, damage of ice crystals is reduced as the three-dimensional netty structure of the supermolecular gel limits growth and recrystallization of the ice crystals.
Owner:WUHAN UNIV OF TECH
Luminous armyworm device
ActiveCN108669032BArmyworm works wellIncrease scatteringInsect catchers and killersEngineeringMechanical engineering
Owner:SOUTHWEST UNIV
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