80results about How to "Good adsorption function" patented technology

The invention relates to the field of intelligent high polymer materials and discloses a thermo-sensitive type magnetic levosulpiride molecularly-imprinted microsphere and a preparation method thereof. According to the invention, levosulpiride is used as a template molecule, N-isopropylacrylamide is used as a functional monomer, and the thermo-sensitive type magnetic levosulpiride molecularly-imprinted microsphere is prepared by using surface molecular imprinting technology. The preparation method comprises the following steps: 1, surface modification of a Fe3O4 microsphere; 2, preparation of a SiO2-coated Fe3O4 microsphere by using a sol-gel method; 3, surface silanization of the SiO2-coated Fe3O4 microsphere; 4, preparation of the thermo-sensitive type magnetic levosulpiride molecularly-imprinted microsphere on the surface of the SiO2-coated Fe3O4 microsphere by using free radical polymerization; and 5, elution of the imprinting template molecule. The preparation method provided by the invention has the advantages of easiness, low cost, convenience in industrial popularization and application, etc. The prepared molecularly-imprinted microsphere has selectivity on a target molecule and is applicable to separation of enantiomers of sulpiride.

The invention discloses a method for preparing a powdery porous manganese dioxide electrode. The method comprises the following steps of: preparing electrolytic manganese dioxide, weighing a certain mass of expanded graphite and the prepared electrolytic manganese dioxide, dry-mixing the electrolytic manganese dioxide and the expanded graphite uniformly, dropping aqueous solution of sodium carboxymethylcellulose serving as adhesive drop by drop, continuously stirring the solution till paste is obtained, coating the paste on two sides of a titanium net, and performing compaction and drying to obtain the powdery porous manganese dioxide electrode. The method for preparing the powdery porous manganese dioxide electrode is easily implemented, obtains stable electrode performance, and has high wastewater treatment efficiency.

The invention relates to the technical field of natural latex, and in particular, relates to a natural latex preserving method and a prepared latex product. The natural latex preserving method comprises that bamboo charcoal is added in natural latex for preservation. The natural latex preserving method provided by the invention adopts the bamboo charcoal for preserving the natural latex, so that an ammonia stabilizer cannot be added in the natural latex or can be added with a little amount, no ammonia or low ammonia preservation is implemented, the preserved natural latex has relatively small pungent odor or even has no pungent odor, and moreover, the preservation shelf life is not affected. The latex product provided by the invention has antibacterial and bacteriostasis functions, and has small pungent odor and long preservation shelf life. In addition, the latex product provided by the invention also has a far infrared function, and can promote microcirculation of a human body; and moreover, the latex product has excellent mechanical properties, adsorption function and moisture absorption and sweat releasing functions, has excellent application performance, and is beneficial for wide application of the natural latex.

The invention discloses a molecularly imprinted membrane with a selective-separation chiral drug and a preparation method of the membrane. According to the invention, D-naproxen is taken as template molecules, a PVDF (Polyvinylidene Fluoride) hollow fiber separation membrane is taken as a base material, and the D-naproxen imprinted molecules are packaged in a fenestra grafting gel layer in a surface finish process to prepare the D-naproxen imprinted PVDF hollow fiber membrane. The molecularly imprinted separation membrane prepared by the method has good adsorption and separation functions to naproxen chiral drug molecules, has a desorption rate up to 90%-95.78%, can realize the intelligent regulation and control on combination and release of D-naproxen and solves the problem of uncontrollability on the shape and size of cavities and the affinity of template molecules of the conventional molecularly imprinted membrane. According to the invention, the mature PVDF hollow fiber membrane on the market is taken as a base membrane of the molecularly imprinted membrane, and an N-isopropyl acrylamide monomer (NIPAAm) of the conventional thermo-sensitive hydrogel is taken as a functional monomer; and the preparation method is simple, low in production cost as not needing special equipment, and suitable for industrialized application.

The invention provides an environment-friendly water permeable brick as well as a compression forming mould and a preparation method for preparing the environment-friendly water permeable brick. The water permeable brick is formed by a water permeable brick surface layer and a water permeable brick base layer, wherein materials of the surface layer mainly comprise sand with the particle size being 10 to 20 mesh and cement; materials of the base layer mainly comprise large gravel with the particle size being 3 to 8mm and cement. The method specifically the steps of adding the materials into two stirring machines respectively, adding other materials of corresponding formulas for evenly stirring, then compressing by a brick compression forming machine, distributing the base layer materials twice and the surface layer materials once in a lower mould hollow part of the compression forming mould, performing shaking compression for 2 to 3s after each time of material distribution, thus preparing a formed green brick, and then performing curing to form the water permeable brick. A dry-press forming process is adopted to prepare the water permeable brick, so that the production cost and the energy consumption are reduced; the prepared water permeable brick has good water permeability, abrasion performance, skid resistance and crushing resistance.

The invention discloses a passivator for farmland heavy metal contaminated soil, and a preparation method and application of the passivator. The passivator for the farmland heavy metal contaminated soil is mainly composed of clay minerals, iron-based minerals, phosphorus-based compounds, areca waste powder, a pH regulator and the like. The preparation method comprises the following steps: drying and crushing areca nuts, areca seed kernels, areca branches and the like generated in an areca-nut production process, then mixing the dried and crushed areca waste powder with the clay minerals, the iron-based minerals and the phosphorus-based compounds, then adjusting the pH value by adopting the pH regulator to obtain the passivator. The passivator is applied to the farmland heavy metal contaminated soil, dissociative heavy metal ions in the soil can be efficiently adsorbed and fixed, so that heavy metals entering crops can be effectively reduced, the original ecological environment and thesoil structure are not damaged, meanwhile the soil fertility can be improved, the harm of harmful organisms in the soil can be reduced, and the yield of the crops can be increased.

The invention relates to a method for preparing layer-by-layer self-assembled protein-imprinted polymer of chitosan. A cross-linked chitosan spherical particle substrate is first prepared, electronegative template protein BSA and electropositive chitosan are alternately adsorbed by the method of layer-by-layer self-assembly, that is, the template protein and the chitosan are alternately electrostatically self-assembled on the surface of the cross-linked chitosan spherical particle substrate, the imprinting of template protein molecules is carried out, eluent is then adopted to remove the template protein molecules, so that a site and hole structure which can identify the template protein and vice versa is left on the surface of the substrate, consequently, the substrate has the selective adsorption and separation functions of the protein, and the layer-by-layer self-assembled protein-imprinted polymer of chitosan is obtained by the method. The polymer prepared by the method has good capability to selectively adsorb the template protein, and has a good selective protein separation function, meanwhile, the preparation method is simple, preparation conditions are mild, and the method has good recyclability.

The invention relates to the field of intelligent high polymer materials and discloses a thermo-sensitive type L-carnitine molecularly-imprinted polymer and a preparation method thereof. According to the invention, L-carnitine is used as a template molecule, N-isopropylacrylamide is used as a functional monomer, and the thermo-sensitive type L-carnitine molecularly-imprinted polymer and a thermo-sensitive type L-carnitine molecularly-imprinted microsphere are prepared by respectively using traditional and surface molecular imprinting technology. The preparation method comprises the following steps: 1, preparation of the thermo-sensitive type L-carnitine molecularly-imprinted polymer and 2, preparation of the thermo-sensitive type L-carnitine molecularly-imprinted microsphere, wherein the step 1 comprises a substep of preparation of the thermo-sensitive type L-carnitine molecularly-imprinted polymer and elution of the imprinting template molecule, and the step 2 comprises a first substep of preparation of a SiO2 nanometer microsphere by using a Stober method, a second substep of surface activation of the SiO2 microsphere, a third substep of surface modification of the SiO2 microsphere, a fourth substep of preparation of the thermo-sensitive type L-carnitine molecularly-imprinted microsphere and a fifth substep of elution of the imprinting template molecule. The preparation method provided by the invention has the advantages of easiness, low cost, convenience in industrial popularization and application, etc. The molecularly-imprinted polymer is applicable to separation of enantiomers of DL-carnitine.

The filter material for eliminating cigarette smoke is formed from tourmaline microcrystal, zeolite, far infrared zirconia powder and titania powder according to the mixing ratio of 60-65%:10-15%:10-15% and 15-20%. Its preparation process is as follows: firstly, cleaning tourmaline and zeolite respectively, drying and pulverizing to obtain tourmaline microcrystal and zeolite, mixing them according to the above-mentioned ratio, ball-grinding them to 100-120 meshes, heating at 450-500 deg.c for 3-4 hr, finally mixing the above-mentioned powder material, with plastics and foaming agent according to the ratio of 3:1:0.1, foaming so as to obtain the invented filter material microporous sponge body which not only can be used for elimianting cigarette smoke and cleaning air, but also can release lots of negative ions.

The invention discloses a preparation method of a shape memory imprinting gel, and belongs to the technical field of adsorption material preparation. A prepared water-soluble phenylboronic acid, usedas a functional monomer, and tetrodotoxin are polymerized through a Pickering emulsion technology by utilizing the affinity effect of boron with nano-silica as a stable particle, a dispersion as a water phase and octadecyl methacrylate as an oil phase, an emulsion is introduced, polymerization is initiated by utilizing ultraviolet light to obtain a gel, and template molecules are eluted to obtainthe shape memory imprinting gel. The shape memory imprinted gel has a good adsorption separation performance and a remarkable adsorption separation effect on tetrodotoxin when applied to adsorption separation of tetrodotoxin in an aqueous solution. The prepared imprinted gel can be swelled and fully contacted with water after entering the water, the formed gel has a good structure, is not prone tobeing dispersed, can be restored to the original shape through drying after adsorption, has a certain shape memory function, is convenient for TTX enrichment, and can be repeatedly used and recycled.

The invention relates to the field of duck meat processing, in particular to a method for removing the fishy smell and protecting the color of duck meat. The method comprises the steps of removing the viscera of a duck, cleaning the duck, blanching the duck in warm water, soaking the duck in water containing purple common perilla, lemon and cassia bark, blowing air to the warm water during soaking, ensuring that a ventilating pipe extends to the bottom of the warm water, taking out the duck and soaking the duck in ice and water mixed bath, adding eucalyptus oil, tea polyphenol and chitosan into the ice and water mixed bath, taking out the duck and placing the duck into an operating chamber at the temperature of 5 to 10 DEG C, arranging a spraying device at the upper part of the operating chamber, putting the duck on a rotating frame in the middle of the operating chamber, arranging spray liquor inside the spraying device, which adopts mixed liquor of cochineal, sodium carbonate and sodium bicarbonate, freezing the processed duck in a freezing chamber, and performing vacuum package, so as to obtain duck meat without fishy smell and bright color. The method effectively removes the fishy smell of duck meat and simultaneously improves the color of the duck meat.

The invention discloses naproxen molecular imprinting hydrogel and a preparation method thereof, relating to the field of intelligent high molecular material. The product adopts D-naproxen as template molecules, the D-naproxen is cross-linked and polymerized by initiation in an N-isopropyl acrylamide (NIPAAm) monomer solution, and then the template molecules in the polymer are removed by a physical means to obtain the molecular imprinting temperature-sensitive hydrogel with the space structure of the imprinted D-naproxen template molecules. The temperature-sensitive molecular imprinting hydrogel has an adsorptive action on the D-naproxen molecules, and can realize chiral separation of the D-naproxen and L-naproxen. The gel prepared in the invention adopts the routine temperature-sensitive hydrogel monomer raw material NIPAAm, and the preparation method is simple, dispenses with special equipment, has low production cost and is suitable for industrialized application.

The invention discloses a nonwoven material containing bamboo charcoal and grapheme and a preparation method, a sanitary material and an application thereof. The nonwoven material comprises a grapheneviscose composite fiber and a bamboo charcoal viscose composite fiber. The preparation method of the nonwoven material includes mixing the graphene viscose composite fiber and the bamboo charcoal viscose composite fiber and conducting opening, multi-chamber mixing, carding and web forming, hydroentangling and drying to obtain the nonwoven material. The nonwoven material not only has excellent antibacterial and adsorption functions, but also has low-temperature far-infrared and negative ion releasing effects. The graphene and the bamboo charcoal can uniformly and stably exist in the fiber, andthe risk of functional substance remaining on the contact surface like the skin can be reduced. The nonwoven material can be made into the sanitary material like a mask substrate, and the problem ofcomplex formula or preparation process caused by addition of antibacterial or adsorbing materials is solved.

The invention discloses a conditioner for heavy-metal-contaminated soil of an acid farmland and a preparation method and application thereof. The soil conditioner is mainly composed of clay minerals,iron-based minerals, phosphorus-based compounds, betel nut residue decomposed fertilizer, betel nut residue powder, quick lime and the like; the preparation method of the conditioner comprises the steps that betel nut residues, farmyard manure and straw are decomposed by means of an accumulation method to obtain the betel nut residue decomposed fertilizer; betel nut residues are dried and crushedto obtain the betel nut residue powder; after the betel nut residue decomposed fertilizer, the betel nut residue powder, the clay minerals, the iron-based minerals and the phosphorus-based compounds are mixed, the quick lime is adopted for adjusting the pH to alkalinity, and the conditioner is obtained; the conditioner is used for the heavy-metal-contaminated soil so that not only can free heavy metal ions in the soil be efficiently adsorbed and fixed and prevented from entering crops effectively, but also the original ecological environment and soil structure of the farmland are not destroyed, the soil fertility is improved at the same time, the damage of harmful organisms in soil is reduced, and the yield of the crops is increased.

The invention provides a multi-functional complex oxide powder capable of absorbing and storing NOx, HC and O2 and a method of preparing emission and purification catalyst for motor vehicles with the powder. The catalyst of the invention is not easy to conglobe and age, is easy to disperse evenly, has very high specific surface area, can effectively improve the dispersion and stability of precious metal and other active components, and has very good high-temperature thermal stability.

The invention discloses an environment-friendly non-toxic efficient sewage treating agent, which is prepared from the following raw materials in parts by weight: 11 to 15 parts of grease adsorption filled earth, 4 to 6 parts of carbonate, 1 to 2 parts of hexametaphosphate, 3 to 7 parts of isopropyl alcohol, 1 to 3 parts of poly-sulfate, 2 to 4 parts of poly-chlorate, 8 to 12 parts of adsorption carbon, 6 to 10 parts of plant bactericide, 3 to 5 parts of sodium acetate and 14 to 18 parts of synergistic additive. The sewage treating agent provided by the invention is capable of effectively removing pollutants in water, and has better treating and adsorbing functions on heavy metal and fungus pollutants in the sewage; the sewage is thoroughly treated, the treating cost is low, and the non-toxic and harmless effects are realized; meanwhile, the sewage treating agent has the advantages that the raw material components are safe and reliable, the environmental pollution is avoided, the raw materials are easy to obtain, the cost is low, the process is simple and clear, and higher practical value and good application prospect are realized.