192 results about "Polyethylene glycol methacrylate" patented technology

The present invention is directed to a water-based acrylic emulsion dispersant to be used as a grind resin to incorporate inorganic pigment into a pigment dispersion for a coating composition. The acrylic emulsion dispersant is the reaction product of butyl methacrylate, butyl acrylate, styrene, methyl ether polyethylene glycol methacrylate, polyethylene glycol methacrylate, and polyphosphoric acid. The present invention is also directed to a method of preparing the acrylic emulsion dispersant. In this method, the butyl methacrylate, butyl acrylate, and styrene are combined with water to establish a first reaction blend. Similarly, the methyl ether polyethylene glycol methacrylate and the polyethylene glycol methacrylate are combined with water to establish a second reaction blend. Next, the first and second reaction blends are polymerized to form an intermediate emulsion polymer containing a hydroxyl group from the functionality of the polyethylene glycol methacrylate. Finally, the hydroxyl group from the polyethylene glycol methacrylate is reacted with polyphosphoric acid to form the acrylic emulsion dispersant which is utilized for efficient wetting and grinding of the pigment.

The invention discloses high-strength photosensitive hydrogel as well as a preparation method and application thereof. The high-strength photosensitive hydrogel is formed by free radical polymerization copolymerization of polyethylene glycol methacrylic ester, 2-vinyl-4,6-diamino-1,3,5-triazine and a double-bond-containing monomer with a spiropyrane structure; the three monomers and an initiator are dissolved in a solvent, unsaturated bonds on the molecules of the monomers are initiated by the initiator, and the hydrogel is prepared through free radical polymerization reaction. The photosensitive hydrogel disclosed by the invention has higher stretching resistance and compression resistance, and has good biocompatibility. Moreover, the hydrogel has the capability of adsorbing DNA (Deoxyribonucleic Acid) transfection cells as well as adjusting attaching and un-attaching behaviors of the cells by illumination.

The invention provides water-soluble poly(3,4-ethylenedioxythiophene) and a preparation method for a conductive coating thereof. The method comprises the following steps of: adding 3,4-ethylenedioxythiophene and an oxidant into the aqueous solution of the copolymer of sodium styrene sulfonate and an allyl monomer, regulating a pH value to be 1 to 5 by using a sulfuric acid, and polymerizing the mixture at the room temperature for 16 to 72h to obtain the water-soluble poly(3,4-ethylenedioxythiophene), wherein the oxidant may be ammonium persulfate, potassium persulfate or sodium persulfate; and the allyl monomer may be an acrylic monomer, a methacrylates monomer, hydroxyethyl acrylate , hydroxyethyl methacrylate, polyethylene glycol methacrylate or styrene. The electrical conductivity of the prepared water-soluble poly(3,4-ethylenedioxythiophene) is higher than that of the poly(3,4-ethylenedioxythiophene) generally using a polystyrene sulfonate acid as a dopant. The conductive coating is obtained by mixing the prepared water-soluble poly(3,4-ethylenedioxythiophene) and other water-based emulsion coatings or water-soluble polymers, and has the characteristics of high transparency and high electrical conductivity.

In order to obtain an electrolyte membrane with high electrochemical stability, the invention provides a preparation method of an all-solid-state fluorine-containing polymer electrolyte membrane, which belongs to the technical field of lithium ion batteries. The preparation method comprises the following steps: step I, adding 5 to 50 parts of fluorine-containing vinyl monomer, 40 to 80 parts of polyether monomer, and 0 to 3 parts of polyethylene glycol methyl acrylate monomer into 100 to 300 parts of solvent, continuously introducing nitrogen, stirring at a rotation speed of 100 to 800 r / min,adding 0.05 to 1.00 part of initiator, reacting for 5 to 48 hours at 60 to 110 DEG C, purifying to obtain a polymer A; step II, adding 30 to 80 parts of polymer A, 5 to 20 parts of lithium salt, and 0to 20 parts of filler and auxiliary into 100 to 300 parts of solvent, stirring at the rotation speed of 100 to 800 r / min in dry nitrogen atmosphere, stirring for 1 to 10 hours, adding 0 to 2.00 partsof hydroxyl cross-linking agent into a mixed system, uniformly smearing a mixed solution onto a special mold, and reacting for 6 to 24 hours at 60 to 100 DEG C in the nitrogen atmosphere of a vacuumdrying box; and step III, after the reaction is ended, drying for 30 to 60 hours at 90 to 98 DEG C in the nitrogen atmosphere, so as to obtain the all-solid-state fluorine-containing polymer electrolyte membrane.

The invention belongs to the technical field of preparation of biomedical high molecular polymer materials and discloses a cholesterol modified amphiphilic pH response pennicuius copolymer and a preparation method and a micelle system prepared based thereof. The copolymer has a structure shown in the formula I in the specification, wherein x is 10-36, y is 15-40 and z is 8-30. The copolymer is obtained by virtue of irregular copolymerization of a hydrophilic block hydroxyethyl methylacrylate, hydrophobic cholesterol and pH response block methacrylic acid N, N-diethyl aminoethyl combined with hydrophilic poly(ethylene glycol) methyl ether methacrylate. The copolymer is dissolved in a solvent to obtain a nanoscale micelle system, wherein the inner layer is a cholesterol modified hydrophobic chain segment, the middle layer is a pH response chain segment and the shell is a hydrophilic chain segment, so that the function of high entrapment performance, stable existence of a neutral condition and quick release in a weak acidic condition is achieved. By adjusting the proportions of the blocks in the polymer, the release rates of medicines can be regulated to satisfy the release requirements on different drugs.

The invention relates to a photocrosslinked thiolated chitosan-polyethylene glycol methacrylate hydrogel used for a tissue adhesive, and a preparation method thereof. The hydrogel is obtained throughphotocrosslinking a thiolated chitosan solution and a polyethylene glycol methacrylate solution. The preparation method comprises the following steps: preparation of thiolated chitosan, preparation ofpolyethylene glycol methacrylate, and preparation of the photocrosslinked thiolated chitosan-polyethylene glycol methacrylate hydrogel. The thiolated chitosan and polyethylene glycol methacrylate arerespectively prepared, and the proportions of the two components are adjusted to well control the crosslinking speed, the mechanical strength and the bonding strength of the hydrogel; and the prepared hydrogel has excellent biocompatibility and biodegradability, has excellent cohesiveness to tissues, and is a hydrogel used for the tissue adhesive.

The invention provides fluorine-containing polymer electrolytes and preparation methods and applications thereof, relates to novel fluorine-containing polymer electrolytes and synthesis methods thereof, and aims at solving the problems that an existing polymer electrolyte containing a polyoxyethylene structure easily absorbs water and is relatively low in conductivity. The fluorine-containing polymer electrolytes are formed by ternary polymerization of sodium p-styrene sulfonate, polyethylene glycol methacrylate and hexafluorobutyl methacrylate, or tetrapolymerization of sodium p-styrene sulfonate, polyethylene glycol methacrylate, hexafluorobutyl methacrylate and ethylene vinyl carbonate; and the two fluorine-containing polymer electrolytes can also be put into a lithium salt solution for lithium salt replacement and applied to an all-solid-state lithium-ion battery as the electrolytes. A perfluoroalkyl group with strong electron-withdrawing property is introduced into the structure, so that ionization of lithium ions is promoted; the ionic conductivity is improved; the hydrophilicity of a polymer is reduced; and the mechanical property of an electrolyte membrane is improved.

The invention discloses a low-cost polyester polycarboxylic acid water reducer, and relates to a building material. The low-cost polyester polycarboxylic acid water reducer is prepared from the following steps: an esterification reaction: conducting an esterification reaction on polyethylene glycol and methacrylic acid under effects of an inhibitor hydroquinone and a catalyst p-toluene sulphonic acid to generate esterification macromonomer polyethylene glycol methacrylate and water, wherein silica gel is used as an absorbent in the reaction to absorb water generated in the esterification reaction to proceed the reaction, and stopping the reaction when esterification rate reaches 40-60%; and a polymerization graft reaction: conducting isothermal reaction on the esterification macromonomer polyethylene glycol methacrylate with mixed monomer MAA, AM and SMAS in the presence of a chain transfer agent thioglycolic acid, an initiator ammonium persulfate and an initiating assistant hydrogen peroxide, cooling to room temperature after the reaction, and adding NaOH to adjust a pH value to 7. Compared with the prior art, the low-cost polyester polycarboxylic acid water reducer protected by the invention has advantages of low cost and good water reducing performance.

The invention discloses an initiation system for photo-polymerization of active free radicals of methacrylate monomers. The initiation system comprises organic halide initiators, aromatic tertiary amine reducing agents and benzaldehyde photocatalysts with substituents. Visible light (such as a household 23W energy-saving lamp) can be used as a light source for the initiation system, and polymerization of the active free radicals of the methacrylate monomers can be initiated at the room temperature. The free radicals of methyl methacrylate (MMA), polyethylene glycol methacrylate (PEGMA) and methacrylic acid benzyl ester (BnMA) monomers and the like can be polymerized under preferred matching conditions. Polymers prepared by the aid of the initiation system are macromolecular initiators, chain extension reaction is successfully carried out, and accordingly block polymers can be obtained. The initiation system has the advantages that catalysts are low in toxicity, and polymerization reaction conditions are mild; the cost of polymerization reaction is lowered to a great extent owing to the usage of organic catalysts as compared with polymerization reaction catalyzed by transition metal complexes, and after-treatment working procedures can be reduced to a great extent.

The invention discloses an acrylic ester polymer surfactant and a preparation method thereof. The acrylic ester polymer surfactant is characterized in that: solution polymerization is initiated by using free radicals; benzoyl peroxide is used as an initiator; anion hydrophilic methacrylic acid (MAA), lipophilic stearyl methacrylate (SMA) and nonionic hydrophilic poly(ethylene glycol) dimethacrylate (PEGMA) are used as polymerization monomers respectively; and thus, the amphipathic polymer surfactant is synthesized. In the invention, the drawback that the demanding reaction conditions during graft copolymerization and block copolymerization increases cost and limits yield is overcome, the method is simple and convenient to implement, ensures large monomer selection and component variation range, and contributes to promotion and use.

The invention firstly adopts mercaptoethylamine to trigger ring opening polymerization of L-glutamic acid-gamma-benzyl ester-N-carboxylic acid anhydride (BLG-NCA) to prepare mercaptyl-terminated (L-glutamic acid-gamma-benzyl ester) polymer, the mercaptyl-terminated (L-glutamic acid-gamma-benzyl ester) polymer is used as a macromolecular chain transfer agent to perform free radical polymerization with activated monomer polyethylene glycol metacrylic acid ester (MAPEG, Mn is equal to 475g / mol), and thereby amphiphilic poly(L-glutamic acid)-b-polyethylene glycol is obtained; cystamine is used for crosslinking L-glutamic acid-gamma-benzyl ester therein, meanwhile the residual gamma-benzyl ester groups are converted into carboxylic acid groups and adriamycin amycin is statically loaded, and thereby the nano micelle is formed by self-assembling in aqueous solution.

The present invention provides a ceramic diaphragm comprising a diaphragm substrate having a surface coated with a polymer-coated functional ceramic powder. The polymer coating the surface of the ceramic powder is polystyrene sulfonic lithium (PSSLi) and a polyethylene glycol methacrylate hydrocarbon microporous diaphragm. The diaphragm substrate is a polyolefin microporous diaphragm. The polyethylene glycol methacrylate (PEGMA) has an average molecular weight of 400 to 5000 g / mol. The method provided by the invention comprises firstly activating the ceramic powder by using a silane coupling agent; then introducing a halogen functional group to graft the ceramic powder with a halogen initiator; adding sodium benzenesulfonate monomer (SSNa) and polyethylene glycol methacrylate (PEGMA) for apolymerization reaction; then adding the mixture to a lithium ion aqueous solution for ion exchange to obtain the polymer-coated functional ceramic powder; and finally stirring the polymer-coated functional ceramic powder to form a ceramic slurry and form the polymer-coated ceramic diaphragm by coating. The method provided by the present invention greatly improves the dispersibility and the functionality of lithium ions.

The invention relates to a photosensitive degradable comb-like copolymer film with controllable surface appearance and performance and belongs to the field of functional polymer materials. Firstly a reaction is carried out on cinnamoyl chloride (CC) and epsilon-caprolactone modified methacrylate (FMn, n is equal to 1-3), so that a series of photosensitive macromolecule monomers (FMnC) are obtained; the FMnC and polyethylene glycol methacrylate (MAPEG) are taken as a first monomer and a second monomer, then free radial copolymerization is carried out on the first monomer, the second monomer and a third monomer such as styrene (St), glycidyl methacrylate (GMA) and tert-butyl methacrylate (BMA), so that a photosensitive degradable terpolymer with a comb-like structure is prepared; a solvent volatilization method is adopted to prepare the product photosensitive degradable terpolymer with the comb-like structure into the film, and study shows that the photosensitive degradable comb-like copolymer film has photosensitivity and degradability; surface appearance and wettability of the photosensitive degradable comb-like copolymer film can be controlled by changing polarity and addition amount of a selective solvent. The obtained photosensitive degradable copolymer film with controllable surface appearance and performance is expected to be taken as an intelligent degradable material and widely applied to the fields of tissue engineering materials, medical materials and the like.

The invention discloses an antibacterial and scrubbing-resistant waterborne coating for a glass door. The waterborne coating is characterized by being prepared from the following raw materials in parts by weight: 34-37 parts of waterborne epoxy emulsion, 13-15 parts of waterborne organosilicone emulsion, 20-24 parts of vinyl acetate / butyl acrylate emulsion, 2-4 parts of triethylene glycol monoethyl ether, 0.3-0.6 part of alkanolamine alkoxy titanate, 0.3-0.5 part of a flatting agent BYK-310, 0.1-0.2 part of nanobacteria cellulose, 0.2-0.4 part of white oil, 0.5-1.0 part of polyethylene glycol methacrylate, 0.4-0.6 part of tetrachloro isophthalonitrile, 0.3-0.5 part of fatty acid polyoxyethylene ether, 0.4-0.7 part of citral, 0.2-0.4 part of cuprous oxide, 3-5 parts of a modified titanium dioxide photocatalyst, 1-2 parts of pigment and 10-15 parts of deionized water. The coating for the glass door has the advantages of excellent water resistance, high hardness, scrubbing resistance and low film forming temperature as well as excellent performance, low cost, strong adhesion after curing and no peeling and is non-toxic and environmentally friendly; by adding a plurality of organic, inorganic, and natural antibacterial agents, the antibacterial property of the coating is enhanced; and by adding modified titanium dioxide photocatalyst, the air can be effectively purified, bacteria can be killed and the deodorant effect, taste removal effect, antifouling effect and the self-cleaning function are achieved.

The invention discloses a hydrophilic shape memory hydrogel serving as an artificial lens material, belonging to the field of biomedical materials. The invention aims at solving the problems of glare, eccentric displacement and easy induction of after cataract of the existing foldable artificial lenses. The hydrophilic shape memory hydrogel is prepared from a polymeric monomer and an initiator, wherein thepolymeric monomer refers to hydroxyethyl methacrylate, 2-phenoxyethyl acrylate, polyethylene glycolmethacrylate and triethylene glycoldiacrylate; and the initiator is azodiisobutyronitrile. The hydrophilic shape memory hydrogel disclosed by the invention serves as the artificial lens material, the equilibrium moisture content is over 30%, the refraction index is greater than 1.4, the light transmittance can go beyond 90%, the deformation recovery rate exceeds 96%, and the mechanical and optical properties are good; and the artificial lens can simulate a normal human lens in diameter and thickness, thus the whole lens capsule can be filled withthe implanted artificial lensto effectively reduce the complications such as after cataract, glare and eccentric displacement of artificial lens.

Latex binders useful for preparing zero or low VOC coating compositions having excellent freeze-thaw stability, good tint strength and good scrub resistance when cured may be obtained using a polymerizable polyalkylene glycol monomer such as polyethylene glycol methacrylate in combination with one or both of an emulsifier or a polymerizable polyalkylene glycol monomer containing bulky hydrophobic groups substituted on an aromatic ring.

The invention discloses a preparation method of reductive-response amphipathic wormlike monomolecular prodrug. On the basis of linear structure of glucan, stimulus response of high-concentration glutathione in tumor cells is utilized to promote splitting of disulfide bonds of the amphipathic wormlike monomolecular prodrug to realize synchronous release of camptothecin (CPT) which is antitumor drug so as to act on a tumor position. The preparation method includes following steps: (1), preparing camptothecin monomer: specifically introducing disulfide-bond camptothecin CPT-SS; (2), preparing a drug initiator DEX-Br; (3), polymerizing the camptothecin monomer CPT-SS on the initiator through atom transfer radical polymerization (ATRP) to obtain a DEX-CPT-SS hydrophobic intermediate product; (4), utilizing ATRP to polymerize polyethylene glycol methacrylate (OEGMA) to obtain amphipathic segmented polymer DEX-CPT-OEGMA-SS named as DCO-SS. The obtained amphipathic wormlike monomolecular prodrug can directly form a drug monomolecular micelle in an aqueous phase, has the advantages of high drug loading capacity (higher than 23wt%), high micelle stability, sensitive stimulus-response drug release, high biocompatibility and low toxic and side effect on normal tissue. The problem that hydrophobic drug is low in molecular solubility is solved effectively, and an efficient drug delivery carrier is provided.

A terpolymer of a hydrophobic polymer, for example, methyl methacrylate, a hydrophilic polymer, for example, poly(ethylene glycol) methacrylate, and a polymer having a sidegroup that is photocleavable to produce a carboxyl side chain, for example, o-nitrobenzyl methacrylate, is employed as a photoresist.

The invention relates to an alkyd resin modified polymer electrolyte as well as a preparation method and application thereof. The preparation method comprises the following steps that alkyd resin andone or more monomers of acrylamide, methacrylamide, acrylonitrile, methyl acrylate, methyl methacrylate and monofunctional or polyfunctional polyethylene glycol acrylate / polyethylene glycol methacrylate are subjected to copolymerization in an organic solvent under the action of an initiator, then an electrolyte body, a plasticizer and ionic non-conductive or ionic conductive inorganic nano-particles or nano-fibers are added into a copolymer, and uniform mixing is carried out so as to obtain the alkyd resin modified polymer electrolyte; or the alkyd resin and an ionic conductive polymer are dissolved in the organic solvent, the electrolyte body, the plasticizer and the ionic non-conductive or ionic conductive inorganic nano-particles or the nano-fibers are added to perform blending, and uniform mixing is carried out so as to obtain the alkyd resin modified polymer electrolyte. The invention provides the novel high-performance polymer electrolyte and the preparation method thereof.

The invention discloses a preparation method of a multi-stimulation-response cooperative anti-tumor polymer prodrug. The preparation method comprises the following steps: based on beta-cyclodextrin, modifying a double-sulfur-bond camptothecin monomer CPT-SS, 2-(diisopropylamino)ethyl methacrylate DPA and polyethylene glycol methacrylate OEGMA on an initiator by utilizing atom transfer radical polymerization reaction (ATRP), so as to obtain an amphiphilic polymer prodrug beta-CD-P (CPT-co-DPA-co-OEGMA). The obtained amphiphilic polymer prodrug can be directly self-assembled in a water phase toform a single-molecule medicine micelle and also can be used for physical embedding an anti-cancer drug, i.e., adriamycin. Double sulfur bonds of the single-molecule prodrug are opened under the stimulation of a tumor microenvironment condition, amphiphilic performance is changed and the anti-tumor drug is synchronously released to kill tumor cells. Therefore, the method has the advantages that the loading amount of a hydrophobic drug is improved and the selectivity of the anti-tumor drug is also increased; the cooperative treatment effect is remarkable and the safety is high.

The invention discloses a preparation method of a modified carbon nanotube doped solid polymer electrolyte. The preparation method comprises the concrete steps of mixing a hydroxyl carbon nanotube, a vinyl silane coupling agent, ammonia water, anhydrous alcohol and deionized water at a certain ratio, performing heating to be 80 DEG C, performing magnetic stirring for 8-12h, performing suction filtration, washing and drying, performing ultrasonic for half an hour on an obtained modified carbon nanotube, polyethylene glycol methacrylate, lithium salt, potassium persulfate and the deionized water at a certain ratio at a room temperature, performing magnetic stirring until a well dispersed suspension is formed, casting the suspension into a polytetrafluoroethylene die, performing a reaction for 6-10h in an oven at 70 DEG C, performing temperature rise to be 80 DEG C, performing keeping for 24h, and then performing drying to obtain a modified carbon nanotube doped solid polymer electrolyte membrane. The method is simple in production process and high in production efficiency; and the prepared modified carbon nanotube doped solid polymer electrolyte has high ionic conductivity and good mechanical strength at the room temperature, and can meet an application demand of a lithium battery.

The patent discloses a preparation method of a solid polymer electrolyte for a lithium ion battery. The preparation method comprises the following steps of doping acrylic acid lithium salt grafted on the surfaces of silicon dioxide nanoparticles into a copolymer of polymer matrix methyl methacrylate and polyethylene glycol methacrylic ester. The migration rate of lithium ions in the copolymer electrolyte is high and is approximate to 1, and thus, the electric conductivity of the lithium ions in the copolymer of polymer matrix methyl methacrylate and polyethylene glycol methacrylic ester is higher than that in a traditional polyethylene oxide electrolyte; and moreover, the mechanical strength of a copolymer electrolyte membrane is also higher than that of the traditional polyethylene.

The invention discloses high-strength photosensitive hydrogel as well as a preparation method and application thereof. The high-strength photosensitive hydrogel is formed by free radical polymerization copolymerization of polyethylene glycol methacrylic ester, 2-vinyl-4,6-diamino-1,3,5-triazine and a double-bond-containing monomer with a spiropyrane structure; the three monomers and an initiator are dissolved in a solvent, unsaturated bonds on the molecules of the monomers are initiated by the initiator, and the hydrogel is prepared through free radical polymerization reaction. The photosensitive hydrogel disclosed by the invention has higher stretching resistance and compression resistance, and has good biocompatibility. Moreover, the hydrogel has the capability of adsorbing DNA (Deoxyribonucleic Acid) transfection cells as well as adjusting attaching and un-attaching behaviors of the cells by illumination.

The invention provides amphiphilic segmented copolymer, polymer nano shell crosslinking micelle composed of the amphiphilic segmented copolymer as well as a preparation method and application of the amphiphilic segmented copolymer and the polymer nano shell crosslinking micelle. The amphiphilic segmented copolymer is prepared through reversible addition-fragmentation chain transfer (RAFT) polymerization between a hydrophilic chain segment and a hydrophobic chain segment, wherein the hydrophobic chain segment shows a hydrophobic characteristic in neutral and alkaline environments, the hydrophilic chain segment is obtained through copolymerization of oligo-polyethylene glycol methacrylate and a methacrylate compound with an aldehyde functional group for shell crosslinking, and the molecularweight of the hydrophilic chain segment is 5000 to 10000 Da. By means of the amphiphilic segmented copolymer disclosed by the invention, controllable release of hydrophobic drugs loaded by polymer nano shell crosslinking micelle carriers is achieved; meanwhile, covalent bonds in the amphiphilic segmented copolymer are combined with a photosensitizer with red light emission, and the aldehyde functional group for the shell crosslinking is matched with the hydrophobic chain segment which shows the hydrophobic characteristic in the neutral and alkaline environmenst; thus, controllable release of the drugs can be accurately achieved in the weak-acid microenvironment and under red light irradiation excitation.

The invention discloses an electrostatic spinning nanofiber membrane. Acrylic ester, acrylic acid and polyethylene glycol methacrylate are polymerized into a copolymer. Then, a metal salt solvent is added to the copolymer to prepare a spinning solution, and the spinning solution is injected into an electrostatic spinning device to carry out electrostatic spinning. According to the nanofiber membrane, a preparation method and application, under the precondition of not obviously influencing nanofiber surface morphology, the breaking tenacity of the nanofiber membrane is effectively increased byone to two times; when the amount of an added copper chloride substance is 10% of that of an acrylic acid substance in the copolymer, the mechanical property of the nanofiber membrane is the best, thebreaking tenacity of the nanofiber membrane is 35.12 MPa, and the breaking elongation rate is 26.91%.

The invention discloses a cross-linked nano-micelle with redox sensitive performance and a preparation method of the cross-linked nano-micelle. The preparation method comprises the following steps: a reversible addition-fragmentation chain transfer polymerization method is adopted, a macromolecular chain transfer agent is synthesized firstly and polymerized with poly(ethylene glycol) methacrylate to synthesize a block polymer which can be further modified, on the basis of self-assembly, a cross-linking agent having chemical linking capacity and containing a disulfide bond is introduced, and one stably cross-linked nano-micelle with the redox response performance is constructed in a mode of assembly and later cross-linking. The method is easy to control, the reaction conditions are mild, a metal catalyst is avoided, a product is easy to purify, and the obtained nano-micelle not only can package a hydrophobic drug but also can prevent the drug from being released in advance in blood circulation.

The invention provides a preparation method of fluoro-compound gel polymer electrolyte membrane to obtain the electrolyte membrane high in electrochemical stability, and belongs to the technical fieldof lithium ion batteries. According to the scheme, the method comprises the steps that 1, according to weight parts, 5-50 parts of fluorine-containing vinyl monomer, 40-80 parts of gellable monomer and 0-3 parts of poly(ethylene glycol) methyl ether methacrylate monomer are added into 100-300 parts of solvent, nitrogen is introduced continuously, a mixture is stirred evenly, then 0.05-1.00 part of initiator is added, under a condition of 60 DEG C, reaction is carried out for 24 h, and after purification treatment is conducted, a polymer A is obtained; 2, 30-80 parts of polymer A and 0-20 parts of filler are added into 100-300 parts of solvent, in a dry nitrogen atmosphere, a mixture is stirred evenly, 0-2.00 parts of hydroxy cross-linking agent is added into a mixed system, mixed liquid is evenly coated onto a smooth mold, and in a nitrogen atmosphere, reaction is carried out; 3, after the reaction is completed, vacuum drying is conducted to obtain the fluoro-compound gel polymer electrolyte membrane.

In vivo biocompatible hydrogels to couple and transmit high intensity ultrasound for hemostasis and ablation during surgery, the hydrogels having 4-40 wt. % of a polymer comprising acrylates and the balance water. A group of hydrogels based on cross-linked methacrylate one of which is polyethyleneglycol methacrylate, can form rigid, low acoustic attenuation coupling members and are in vivo biocompatible. These coupling members consist of hydrogel formulations having mechanical and acoustic properties such that ultrasound transmission standoff members of various dimensions and structural configurations function as efficient ultrasound transmission media and devices within which the ultrasound beam can be transferred to a focal point at the end of the standoff or in close proximity to it.

The invention discloses a modified polypropylene hollow fiber filter membrane for environmental detection. The modified polypropylene hollow fiber filter membrane for environmental detection comprises a polypropylene hollow fiber membrane and a coating which coats the surface of the polypropylene hollow fiber membrane, wherein the polypropylene hollow fiber membrane comprises the following raw materials: polypropylene granules, glyceryl triacetate, poly(ethylene glycol) methyl ether methacrylate, p-aminophenol, aminocyclohexanol, and a film coalescence aid; and the coating comprises the following raw materials: diethylaminoethyl methacrylate, dopamine hydrochloride, poly-hydroxy phytic acid, taurine and trishydroxymethylaminomethane. The invention further discloses a preparation method of the modified polypropylene hollow fiber filter membrane for environmental detection. By reasonable blending of the components of the polypropylene hollow fiber filter membrane and the components of the coating and technical procedures, while the hydrophilic performance of the polypropylene hollow fiber filter membrane is guaranteed, the antifouling property and the stability are improved, the binding force of the coating and the polypropylene hollow fiber filter membrane is further increased, and the service life of the filter membrane is prolonged.

The invention relates to a reduced nano-grade silver antibiotic finishing agent containing spherical polymer brushes, and a preparation method thereof. The spherical colloidal particles are prepared through steps that: nano-grade polystyrene microspheres are prepared through emulsion polymerization; the polystyrene microspheres are adopted as cores, and styrene sulfonic acid (SS) is further initiated, such that transition layers are formed; a photo-initiator 2-hydroxyl-2-methyl-1-phenyl-1-acetone (HMPP) is firmly adhered onto the polystyrene sulfonic acid layers under the effect of hydrogen bonds with which the particle sizes of the colloidal particles can be controlled by temperatures; polyethylene glycol methacrylate (PEGMA) is added, ultraviolet light radiation is carried out, such that polymerization is initiated, and shells are formed. The brush-shaped shells can be used for reducing and immobilizing nano-grade silver particles. The nano-grade silver particles have a narrow particle size distribution of 710nm. More importantly, the colloidal particles have good stability, such that the nano-grade silver particles can stably exist for a long time, and the antibiotic effect is good and long-lasting.