165 results about "Quaternized chitosan" patented technology

The invention discloses a high-strength polyethylene film and a preparation method thereof, and relates to the technical field of high polymer materials. The invention discloses a high-strength polyethylene film. The high-density polyethylene composite material is prepared from the following raw materials in parts by weight: 35 to 45 parts of high-density polyethylene, 25 to 35 parts of linear low-density polyethylene, 12 to 18 parts of ethylene-vinyl acetate copolymer, 5 to 10 parts of nano silicon dioxide, 3 to 7 parts of organic montmorillonite, 1.5 to 3.5 parts of hindered amine light stabilizer, 1.5 to 2.5 parts of antioxidant 1010, 0.8 to 1.2 parts of calcium stearate, 0.8 to 1.2 parts of zinc stearate, 0.8 to 1.2 parts of silane coupling agent and 4 to 6 parts of maleic anhydride grafted polyethylene. The composite material is prepared from the following components in parts by weight: 1.5-3.5 parts of a quaternized chitosan-nano silver compound, 6-9 parts of a modified toughening agent, 4-7 parts of a modified heat-resistant agent, 1.5-3.5 parts of a processing aid, 0.15-0.35 part of dibenzoyl peroxide and 0.5-1.5 parts of a nucleating agent DBS. The composite material is excellent in comprehensive performance, high in strength, good in flexibility and puncture resistance, excellent in aging resistance, heat resistance, chemical resistance and antibacterial property, good in processability, capable of meeting the requirements of multiple fields such as packaging and agriculture, scientific in preparation method and high in practical value.

A preparation method of a double-network versatile hydrogel with antibacterial and drug sequential release capabilities is provided in the present disclosure, belonging to the technical field of biological corneas. The preparation method includes the following steps: mixing filipin protein-methacrylate, glycidyl methacrylate functionalized quaternized chitosan, polydeoxyribonucleotide, and lithium phenyl(2,4,6-trimethylbenzoyl) phosphinate with drug-loaded micelles, followed by cross-linking under irradiation of ultraviolet to construct a double-network versatile hydrogel with antibacterial and drug sequential release capabilities.

The invention relates to a pH-responsive aromatic nanocapsule as well as a preparation method and application thereof, and the pH-responsive aromatic nanocapsule comprises the following components in percentage by mass: 0.4-10% of modified SiO2, 0.2-30% of a core material, 10.2-16% of a quaternized chitosan / polydopamine wall material and the balance of water. The preparation method comprises the following specific preparation steps: preparing a modified SiO2 suspension, adding a core material, and carrying out homogeneous emulsification under a high-speed shearing machine to prepare a Pickering emulsion; preparing a quaternized chitosan / polydopamine wall material solution; and finally, carrying out isovolumetric blending on the Pickering emulsion and the quaternized chitosan / polydopamine wall material solution (grafting the quaternized chitosan / polydopamine wall material through the modified SiO2), and stirring to obtain the aromatic nanocapsule. Compared with the prior art, the preparation method has the advantages that the lavender essential oil is taken as a core material, the quaternized chitosan / polydopamine is taken as a wall material, and the modified SiO2 stable Pickering emulsion is taken as a template, so that the catechol-based self-adhesive nanocapsule with pH responsiveness is prepared. The nanocapsule is prepared by an emulsion template method, the preparation method is mild in condition, and the prepared nanocapsule is green and safe and has excellent adhesion and antibacterial properties.

The invention discloses tissue adhesion self-gel powder and a preparation method thereof, and belongs to the field of hydrogel. The preparation method comprises the following steps: firstly, modifying chitosan to obtain quaternized chitosan (QCS), and then grafting urushiol onto the QCS to obtain urushiol-gold quaternized chitosan (US-QCS); the preparation method comprises the following steps: reacting sodium hyaluronate (HA) with calcium salt to obtain calcium hyaluronate (Ca-HA); and mixing the US-QCS and the Ca-HA, so as to obtain US-QCS / Ca-HA self-gel powder. The tissue adhesion self-gel powder prepared by the invention can quickly absorb interface water and then adhere to tissues, various wounds can be blocked, wound healing is promoted, calcium ions in the powder can accelerate blood coagulation, and the powder has the potential ability of promoting bone repair.

The invention relates to a super-absorbent paper diaper and a preparation method and application thereof.The super-absorbent paper diaper comprises a bottom film, a core layer, a surface layer and elastic side seals and is characterized in that the core layer is prepared from, by weight, 50-60 parts of acrylic water-absorbent resin, 20-30 parts of polyacrylamide microspheres, 20-30 parts of quaternized chitosan, 10-15 parts of modifier and 1-5 parts of catalyst; wherein the modifier is a composition of tartaric acid, 2-acrylamide-2-methylpropanesulfonic acid and N, N '-bis (acryloyl) cystamine in a mass ratio of 1: (2-3): (1-1.5). Wherein the acrylic water-absorbent resin provides basic water-absorbent capacity, the polyacrylamide microspheres enhance adsorption and prevent gel blockage, the quaternized chitosan improves antibacterial property and electrolyte adsorption capacity, the catalyst ensures that the reaction is fully carried out, and all the components of the modifier cooperate with one another to enhance hydrophilicity; the water absorption performance, the structural stability and the salt tolerance of the core layer are jointly improved.

The invention provides a viscosity-controllable and low-toxicity polysaccharide-based antibacterial detergent and a preparation method thereof, and belongs to the technical field of daily chemical sterilization. The detergent comprises the following raw materials in percentage by mass: 0.5-6% of a polysaccharide thickener, 10% of a bacteriostatic agent, 10% of a glycoside nonionic surfactant and the balance of water, the polysaccharide thickening agent is a mixture of chitosan, chitosan hydrochloride and quaternized chitosan. The polysaccharide is applied to viscosity regulation and control of a surfactant system without a petroleum-based thickening agent for the first time, application of the polysaccharide in the field of daily chemical washing is expanded, and compared with other antibacterial hand sanitizer competitive products containing benzene rings and phenol bacteriostatic agents and 6501 thickening agents, the antibacterial hand sanitizer competitive products have the remarkable advantages of high biocompatibility, high antibacterial property, easiness in degradability and the like.

The invention relates to the technical field of composite hydrogel preparation, in particular to a nano composite hydrogel preparation process based on a microfluidic technology. The gel comprises the following components in parts by mass: 50-70 parts of a gel matrix, 5-9 parts of a nano enhancement system, 8-14 parts of a functional carrier, 3-6 parts of a dynamic response system, 4-7 parts of a hyaluronic acid-sulfhydrylated heparin compound and 0.5-1.5 parts of L-ascorbyl palmitate. Precise mixing and directional arrangement of all component materials on a micro-level are realized through a microfluidic technology, so that a nano reinforcing system and a functional carrier are uniformly distributed in a gel matrix, the synergistic effect of all the components is fully exerted, the mechanical property and the biological function of the gel are effectively improved, and the preparation method is suitable for industrial production. And quaternized chitosan nanofibers, a dynamic response system for responding to external environment change and a hyaluronic acid-sulfhydrylated heparin compound for promoting angiogenesis are introduced, so that the gel has the biological functions of resisting bacteria and promoting angiogenesis through a synergistic effect.

The invention provides an environment-friendly heat-resistant photovoltaic cable and a preparation method thereof. The environment-friendly heat-resistant photovoltaic cable comprises a conductor, an insulating layer and a sheath layer, the insulating layer is prepared from the following component raw materials: 20 to 30 percent of polylactic acid, 10 to 20 percent of polyhydroxyalkanoate, 25 to 35 percent of halogen-free flame-retardant crosslinked polyethylene, 5 to 15 percent of phosphate esterified lignin microspheres, 3 to 8 percent of quaternary ammonium salt chitosan nanofiber, 1 to 3 percent of modified graphene, 2 to 6 percent of epoxidized soybean oil, 1 to 5 percent of modified montmorillonite and 0.5 to 1.5 percent of nano silicon dioxide aerogel. The invention discloses an anti-aging agent which is prepared from the following components in percentage by weight: 2-4% of sodium alginate microcapsules, 0.5-1.5% of polydimethylsiloxane, 0.1-0.8% of a silane coupling agent and 0.1-0.8% of a plant polyphenol antioxidant. The sheath layer comprises the following raw material components: 45-55% of halogen-free flame-retardant crosslinked polyethylene, 10-20% of lignin-based carbon nanotubes, 5-15% of sulfonated chitosan / sodium alginate microspheres, 1-6% of graphene, 5-15% of epoxidized soybean oil, 2-8% of nano silicon dioxide, 1-3% of polydimethylsiloxane, 1-3% of peppermint oil microcapsules, 1-3% of a silane coupling agent and 0.1-0.8% of an antioxidant. And 0.1-0.8% of an ultraviolet light absorber. The photovoltaic cable disclosed by the invention has the advantages of flame retardance and difficulty in generating drippings after combustion.

The invention relates to the technical field of traditional Chinese medicine nano preparations, in particular to traditional Chinese medicine polysaccharide radiotherapy sensitization nanoparticles and a preparation method thereof.The preparation method comprises the following steps that 1, a chitosan-based carrier and traditional Chinese medicine polysaccharide are dissolved in a buffer solution, and the chitosan-based carrier is selected from chitosan, carboxymethyl chitosan or quaternized chitosan; step 2, putting the chitosan-based carrier solution into a reaction container, and dropwise adding glacial acetic acid to adjust the pH value of the system; 3, a cross-linking agent solution is dropwise added at a constant speed, a cross-linking agent is a multivalent anion / cation compound, and stirring is performed to form a core-shell structure; step 4, dropwise adding a traditional Chinese medicine polysaccharide solution into a mixed system in the step 3, and continuously stirring; step 5, filtering and granulating the obtained solution to obtain nanoparticles; according to the traditional Chinese medicine polysaccharide radiotherapy sensitization nanoparticles and the preparation method thereof, not only is radiotherapy sensitization achieved, but also the immunoregulation function is achieved, and the synergistic interaction of radiotherapy and immunotherapy is achieved by activating dendritic cells and T cells.

The invention discloses antibacterial and antioxidant bionic hydrogel as well as a preparation method and application thereof. The antibacterial and antioxidant bionic hydrogel disclosed by the invention comprises a hydrogel bracket, wherein the hydrogel bracket is prepared from methacrylated quaternized chitosan, acrylated cyclodextrin, methacrylated gelatin and dopamine grafted methacrylated hyaluronic acid according to the mass ratio of (2 to 4) to (1 to 3) to (5 to 7) to (0.5 to 1.5). The antibacterial and antioxidant bionic hydrogel disclosed by the invention has a porous intercommunication structure, relatively large porosity and water absorption rate, and excellent hydrophilicity, electroactivity, antibacterial property, oxidation resistance and biocompatibility. The antibacterial and antioxidant bionic hydrogel disclosed by the invention can be used as an antibacterial material, especially used as a dressing for treating chronic infection wound surfaces.

The invention discloses a diabetic bone defect repair hydrogel stent capable of slowly releasing exosome and a preparation method of the diabetic bone defect repair hydrogel stent. The preparation method comprises the following steps: preparing biotinylated quaternized chitosan methacrylate (QCS-MA-Biotin), formylated oxidized dextran and a biotinylated exosome (Exo-Bio), carrying out avidin bridging, and carrying out photocuring, so as to form the double-network hydrogel. The scaffold disclosed by the invention has a pH-responsive slow-release characteristic, the 28-day release rate of the exosome is less than or equal to 50%, and the activity retention rate gt; in addition, the repair of the diabetic bone defect can be obviously promoted. The method is suitable for repairing defects of skull, alveolar bone and the like.

The invention discloses a targeted delivery system of a largemouth bass frog iridovirus oral vaccine and a preparation method of the targeted delivery system, and relates to the technical field of biological medicines.The method comprises the following steps that a starch solution and a largemouth bass frog iridovirus inactivated vaccine are stirred and mixed, then a paraffin emulsion is added, stirring and emulsifying are conducted, and a W / O emulsion is obtained; adding calcium chloride, stirring and mixing, centrifuging, and resuspending by using a PBS (Phosphate Buffer Solution) to obtain a microsphere resuspension solution; stirring and mixing with a quaternized chitosan solution, adding glutaraldehyde for crosslinking, centrifuging, and freeze-drying. The invention further discloses a targeted delivery system of the largemouth bass frog iridovirus oral vaccine prepared by the method. The vaccine is orally administered after being microencapsulated, so that the human cost is low, the stimulation to fish bodies is small, the problems of inconvenience in fish administration, low bioavailability of oral administration, instability in gastrointestinal tracts and the like are solved, and the vaccine has an excellent application prospect in the field of LMBV prevention and control.

The invention discloses a dual-network injectable hydrogel as well as a preparation method and application thereof. The hydrogel is methacrylated gelatin / oxidized hyaluronic acid loaded with metal polyphenol nano-particles, and the metal polyphenol nano-particles are copper-gallic acid nano-particles which contain quaternized chitosan coatings and are loaded with antibacterial peptide HHC36. After the hydrogel is injected into a periodontal pocket, the hydrogel can adapt to different defect shapes, and the CuGA-coated HHC36-coated QCS nanoparticles are released by responding to a periodontitis microenvironment, so that the effects of resisting periodontal pathogenic bacteria, removing local excessive ROS (reactive oxygen species), effectively promoting fibroblast proliferation, collagen deposition, extracellular matrix accumulation and angiogenesis and further promoting periodontal bone regeneration are achieved. The preparation process is simple, the injectable hydrogel is low in price and easy to obtain, the injectable hydrogel can be prepared through simple steps, and a new thought is provided for treatment of periodontitis.

The invention discloses a medical antibacterial hose and a preparation method thereof, and belongs to the technical field of hose preparation. The medical antibacterial hose comprises the following components in parts by weight: 80 parts of PVC resin; 20 to 30 parts of a plasticizer; 0.6 to 0.8 part of a lubricant; 0.4 to 0.6 part of an antibacterial agent; the antibacterial agent is a quaternized chitosan / MOF composite material, and is recorded as HTCC / Ag / Zn-BDC. The preparation method comprises the following steps: S1, preparing an antibacterial agent HTCC / Ag / Zn-BDC; s2, mixing and granulating; and S3, extrusion molding. A quaternized chitosan / MOF composite material, namely HTCC / Ag / Zn-BDC, is used as an antibacterial agent of the medical antibacterial hose, and all the components can achieve a synergistic effect, so that an excellent antibacterial effect is achieved.

The invention discloses a special ergothioneine-containing skin repair hydrogel for pets and a preparation method of the special ergothioneine-containing skin repair hydrogel, and belongs to the technical field of pet skin care hydrogels. The invention relates to a skin care product which comprises the following components in parts by weight: 1.6-3.8 parts of a functional active component consisting of ergothioneine, quaternized chitosan and oat beta-glucan, 0.15-0.35 part of a cross-linking agent, 5-10 parts of 1, 3-propylene glycol, 5-10 parts of glycerol, 0.2-0.5 part of a preservative and the balance of water, totaling 100 parts. Through precise compatibility of functional active components and synergistic construction of the ionic cross-linked gel matrix, systematic integration of three effects of oxidation resistance, bacteria resistance and healing promotion is achieved, and the technical problems that an existing pet skin care product is single in function, insufficient in synergy and limited in repairing effect are solved.

The invention provides a nylon fabric color fixing agent and a preparation method thereof, the color fixing agent comprises a bio-based compound and a nano barrier component, the bio-based color fixing component is a compound formed by quaternized chitosan, tannic acid and zirconium ions, and the nano barrier component is cellulose nanocrystalline-ZIF-8-coated SiO2 core-shell particles. The color fixing agent disclosed by the invention avoids the use of bisphenol compounds in the traditional color fixing process, and has the characteristic of environmental protection.

The invention discloses nano-silver compound hydrogel for promoting wound skin healing and repairing and a preparation method of the nano-silver compound hydrogel. The nano-silver compound hydrogel has good drug-loaded capacity, and meanwhile has the capacity of promoting wound skin healing and repairing. The prepared nano-silver compound hydrogel is smeared to a skin wound to seal the wound, and under the irradiation of 808 nm of near-infrared light, the nano-silver loaded on the black phosphorus nanosheet releases silver ions, so that the efficient antibacterial ability is achieved. In the gel system, the black phosphorus nanosheet is mixed with the hyaluronic acid and the quaternized chitosan to enhance the adhesion, and in addition, the photo-thermal effect of the black phosphorus nanosheet and the synergistic antibacterial effect are combined, so that the rapid healing and repair of a wound are promoted. The hydrogel obtained in the invention has good biocompatibility, and has potential application value in tissue engineering.

The invention belongs to the technical field of plastic floors, and particularly relates to an environment-friendly Non-PVC floor and a preparation method thereof. The floor is sequentially provided with a transparent sheet layer, a color film layer, a backing material layer and a ground mat layer from top to bottom. The backing material layer comprises PET, PETG, calcium carbonate powder, a plasticizer, a flexibilizer, an external lubricant, an internal lubricant and oxidized wax. The transparent sheet layer and the floor mat layer adopt quaternized chitosan coated trivalent titanium-loaded nano zinc oxide as an antibacterial material and have excellent dispersity and antibacterial performance, cork particles and nano white carbon black modified fibrilia are adopted as a base material, and the sound insulation effect and the mechanical performance are improved through the floor mat layer formed by hot-pressing bonding of PP and PE.

The invention discloses a polyphenol microcapsule synergistically delivered by double-layer hydrogel embedded probiotics as well as a preparation method and application of the polyphenol microcapsule. The preparation method comprises the following steps: mixing suspension at least containing polyphenol substances with zinc salt and gallic acid for reaction to prepare zinc-gallic acid embedded polyphenol nanoparticles; mixing the zinc-gallic acid embedded polyphenol nanoparticles with probiotics to react, so as to prepare a first solid product; and mixing the first solid product with pachymaran, then adding a solution at least containing quaternized chitosan and sodium tungstate dihydrate, and then preparing the obtained mixed solution into the double-layer hydrogel embedded probiotic synergistic delivery polyphenol microcapsule by adopting an electrospray mode. According to the preparation method disclosed by the invention, the probiotics are embedded by adopting the double-layer hydrogel microcapsule with outer layer removal and inner layer colonization for the first time, so that the protection performance and functionality of the microcapsule are enhanced, efficient embedding and colonization of the probiotics are realized, the activity of the probiotics is effectively prevented from being damaged by high temperature and machinery, and industrial production is facilitated.

The invention belongs to the technical field of lithium ion battery materials, and particularly relates to a carbon-coated aluminum foil coating and a preparation method thereof. The invention aims to solve the problem of contradiction between high conductivity and strong adhesive force of the current carbon-coated aluminum foil coating. According to the invention, a multi-stage dimensional composite conductive network is taken as a design core, and the conductive performance of the coating is improved through a ternary composite system formed by conductive carbon black, one-dimensional carboxylated multi-walled carbon nanotubes and two-dimensional sulfonated graphene oxide; the binder adopts a bio-based water-based system and is formed by compounding carboxylated cellulose nanocrystals and quaternized chitosan, and a compact and tough bonding network layer is formed through electrostatic interaction and hydrogen bond combination; the conductive adhesive is excellent in conductivity and strong in adhesive force, the preparation process is environment-friendly and efficient, and the contradictory problem that the conductivity and the adhesive force are difficult to consider at the same time in the prior art is solved.

This invention discloses a composite additive for repairing the foaming properties of recycled polystyrene, relating to the field of recycled polystyrene. It comprises: 30-50 parts of a matrix repair component, 20-35 parts of a nucleating-reinforcing composite component, 10-20 parts of an antibacterial and flame-retardant composite component, and 5-10 parts of a dispersant. Modified rosin ester and polybutadiene oligomers are used as the matrix repair component, combined with nano-calcium carbonate and talc as the nucleating-reinforcing composite component, and further combined with phytic acid and quaternized chitosan functional components and zinc stearate dispersant to form a stable composite system. This system imparts antibacterial and flame-retardant properties to the product, solving the problem of single-function traditional additives, significantly improving the quality of recycled material products, realizing high-value utilization of recycled materials, and simultaneously repairing damaged molecular chains in recycled materials, improving processing flowability and cell nucleation effect, thus compensating for the deficiency of reduced foaming performance in recycled polystyrene.

The invention discloses a modified chitosan-based antibacterial material as well as a preparation method and application thereof, and belongs to the technical field of antibacterial materials. The ciprofloxacin grafted quaternized chitosan is successfully synthesized by taking the chitosan as a raw material, and the water solubility and the antibacterial ability of the chitosan are effectively improved. The antibacterial diameters of the ciprofloxacin grafted quaternized chitosan prepared by the preparation method disclosed by the invention on escherichia coli and staphylococcus aureus are respectively 35.34 to 39.06 mm and 40.45 to 44.51 mm, and the minimum MIC (Minimum Inhibitory Concentration) and MBC (Minimum Mass Chitosan) can reach 0.0005 mg / mL. In addition, the antibacterial material has an obvious inhibition effect on colletotrichum gloeosporioides and aspergillus niger, and the highest antifungal rates respectively reach 53.81 + / -2.17% and 54.88 + / -1.3%. Compared with the raw materials, the antibacterial ability is greatly improved, and the grafted and modified composite material is environment-friendly and can be used for antibacterial food packaging materials.

The present invention relates to the technical field of dyes, and discloses a plant dye for silk fabrics and a preparation method thereof. The present invention is provided by adding turmeric dye, phellodendron dye, antibacterial liquid, quaternized chitosan and water into a stirrer, stirring at room temperature, and obtaining the plant dye for silk fabrics after the end. The antibacterial liquid and quaternized chitosan contain a large amount of quaternary ammonium salt groups, which play a good antibacterial role. The cardanol in the antibacterial liquid itself has a certain antibacterial effect, and synergistically antibacterial with the quaternary ammonium salt. The sulfur element contained in the antibacterial liquid can promote the dehydration of the polymer substrate into carbon during the heating process. This carbon layer can effectively isolate the contact between oxygen in the air and the polymer substrate, thereby achieving a flame retardant effect; the boron element can form a glassy coating covering the polymer when heated, and the coating can effectively isolate oxygen and heat, thereby protecting the internal polymer from further combustion, thereby achieving a flame retardant effect.

This invention discloses a formaldehyde-free modified guar gum wood adhesive, its preparation method, and its application, belonging to the field of wood adhesive technology. It aims to solve the problems of environmental pollution caused by traditional formaldehyde-containing adhesives and the poor water resistance and insufficient bonding strength of guar gum itself. The method includes: dissolving guar gum and then oxidizing and degrading it with hydrogen peroxide, followed by activation with a silane coupling agent, reinforcement with polyvinyl alcohol, and modification by butyl acrylate graft copolymerization. Finally, a cross-linking reaction is carried out simultaneously with the addition of a wood interface modifier composed of sodium lignosulfonate, quaternized chitosan, nano-cellulose whiskers, and nano-zirconia supported zirconium phosphate. The reaction environment is optimized by adjusting the pH of the system to 6.0-6.5. The adhesive obtained by this invention is environmentally friendly and formaldehyde-free, suitable for high-strength bonding of eucalyptus plywood.

The invention belongs to the field of functional textile materials and filtering materials, and provides a multi-effect functional non-woven fabric. According to the invention, a collaborative design of a composite non-woven structure and an immobilized functional layer is adopted, and the composite non-woven structure is composed of a spun-bonded layer containing polyamide 6 and a melt-blown layer containing maleic anhydride grafted polyamide 6; the immobilized functional layer comprises quaternized chitosan-sodium tripolyphosphate ionic cross-linked nanoparticles and forms amido bonds through ring-opening reaction of anhydride groups and amino groups, and the amido bonds are firmly fixed on the surface of the composite non-woven structure; multiple properties such as low-pressure-drop high-flux filtration, efficient particulate matter trapping, high-positive-charge antibacterial and hydrophilic multi-effect synergy, long-acting stable fixation of a functional layer in a humid and hot environment and the like are realized, and the technical problem that performance synergy, interface stability and process compatibility of an existing filtration protection material are difficult to consider is solved; wide application values are realized in the fields of air filtration, personal protection, medical treatment and public health and the like.

The invention discloses a PVC fireproof plate prepared from oyster shells and a preparation method of the PVC fireproof plate, and relates to the technical field of PVC fireproof materials. The preparation method comprises the following steps: step 1, pretreating the oyster shell powder, and reacting quaternized chitosan with epoxidized soybean oil to obtain enhanced oyster shell powder; 2, the oyster shell powder is pretreated, benzophenone chitosan and epoxidized soybean oil are subjected to a reaction, and anti-ultraviolet oyster shell powder is obtained; and step 3, uniformly mixing the raw material components of the PVC fireproof plate according to the formula proportion, adding the mixture into a conical twin-screw extruder, and carrying out mixing extrusion, mold shaping, traction and cutting to obtain the PVC fireproof plate. The prepared PVC fireproof plate has excellent heat resistance, mechanical properties and ultraviolet resistance.

The invention discloses a production process of a cellulose acetate fiber fabric containing natural fragrance, a solvent formed by mixing a modified polymer, 2, 4, 6-trimethylbenzoyl-diphenyl phosphine oxide, a modified microcapsule and dimethylformamide is subjected to dry spinning to prepare the cellulose acetate fiber fabric, and the weight part ratio of the modified polymer to the modified microcapsule is (70-80): (6-8). The preparation method comprises the following steps: by taking an isocyanate group on excessive hexamethylene diisocyanate as a reaction site, firstly reacting with an intermediate containing dihydroxyl, and then reacting with cellulose acetate containing free hydroxyl, so as to prepare the modified polymer. The halamine structure on the molecular chain can destroy cell membranes, enzyme systems or genetic materials through oxidation. The modified capsule has a lavender essential oil and cinnamon essential oil double-component double-capsule-wall structure, the fragrance durability can be improved, the copper sulfide nanoparticles and quaternized chitosan structures can destroy the bacterial cell structure, and the antibacterial performance of the material is improved.

The invention belongs to the technical field of adhesive materials, and particularly relates to a modified starch-based water-based adhesive as well as a preparation method and application thereof. According to the adhesive, oxidized corn starch is taken as a base material, hydrophobic and weather-resistant modification is realized by introducing a fluorine-silicon-containing functional monomer, and hydroxypropyl quaternized chitosan is compounded to endow antibacterial property and a film-forming enhancement effect; a borax cross-linked polyol system is supplemented to improve the cohesive strength, and a plasticizer, a thickening agent and an emulsifier are matched to optimize the rheological property and wettability. The preparation process comprises the steps of starch gelatinization, fluorosilicone urea grafting, chitosan derivative compounding, auxiliary agent blending and the like, and the process is mild, environment-friendly and non-toxic. The obtained water-based adhesive has the characteristics of strong initial adhesion, good water resistance, moderate flexibility, excellent biocompatibility and the like, and is especially suitable for adhesion and manufacturing of ball products such as basketballs, footballs and the like.

This invention belongs to the field of polymer protective materials technology, and discloses a nitrile glove modified with bio-based itaconic acid ester rubber latex and compounded with an antibacterial agent, as well as its preparation method. The glove uses carboxylated nitrile butadiene latex as the matrix, introduces a bio-based itaconic acid ester rubber latex pretreated with a silane coupling agent as a reactive interfacial compatibility component, and uses nano-silver-zinc composite particles and reactive quaternized chitosan to form an immobilized composite antibacterial phase. The glove is prepared through blending, impregnation molding, surface immobilization treatment, gradient vulcanization, and post-treatment. The resulting glove possesses excellent flexibility, low-temperature embrittlement resistance, oil resistance, and long-lasting antibacterial properties, and the antibacterial components are not easily migrated or detached, making it suitable for food processing, medical auxiliary protection, and low-temperature operations.

The invention belongs to the technical field of biological detection, and particularly relates to a detection method and a detection kit for oxidized low-density lipoprotein. The invention provides a novel application of quaternary ammonium salt chitosan in a kit, and particularly relates to application of quaternary ammonium salt chitosan with different molecular weights in an immunoturbidimetry detection process of oxidized low-density lipoprotein. When high-molecular-weight quaternized chitosan with the molecular weight of 100-200 kDa and low-molecular-weight quaternized chitosan with the molecular weight of 30-50 kDa are used as components of the oxidized low-density lipoprotein detection kit, the quaternized chitosan with different molecular weights can react with citrate radicals to form gel particles with different mechanical strengths; the content of the oxidized low-density lipoprotein can be detected through immunoturbidimetry, and the sensitivity and the linear range of the oxidized low-density lipoprotein detection kit are greatly improved and widened by using the quaternized chitosan with different molecular weights.