153 results about "Polyglycidyl methacrylate" patented technology

The invention discloses a polymer microsphere and preparation method thereof. The microsphere comprises a core and surface graft; wherein the core is monodispersed polystyrene-divinyl benzene microsphere with crosslinking degree of 60-90% and grain diameter of 2-20 microns, and the surface graft is polyglycidyl methacrylate or derivate thereof. Friedel-Crafts acylation is utilized, alpha-halogenacyllhalide is taken as acylation agent, initiator molecule is bonded on the surface of the microsphere; conventional atom transfer radical polymerization method is utilized to initiate monomers glycidyl methacrylate to condense; then different nucleopilic reagent is utilized for opening ring, and amino, hydroxyl, hydrazine, carboxyl and sulfydryl groups are introduced onto the surface of the microsphere. The polymer microsphere can be used as separation material for different chromatographs for high efficiency ion exchange, chelation and high efficiency affiliation, also can be used as carrier for fixing enzyme and catalyst and is an excellent functional microsphere.

The invention discloses a preparing method and application of a transparent conducting thin film. The method comprises the steps that thin film base materials are placed in mixed liquid of ethyl alcohol and acetone for ultrasonic processing for 90 min-150 min, deionized water is used for washing, and drying is carried out for standby application; then argon oxygen plasma is used for surface processing, and a hydrophilic thin film A is obtained; glycidyl polymethacrylate is dissolved in a solvent and then is arranged on the hydrophilic thin film A in a spraying-coating mode, the solvent is removed, a thin film B is obtained, then an ethanol solution of a silver nanowire is arranged on the thin film B in a spraying-coating or blade-coating mode, vacuum drying is carried out, and a thin film C is obtained; and the argon oxygen plasma is used for carrying out surface processing on the thin film C, a thin film D is obtained, then a graphene water solution is used for being sprayed on the thin film C in a coating mode by a plurality of times, finally vacuum drying is carried out, and the transparent conducting thin film is obtained. The transparent conducting thin film can be stretched, great electrical conductivity and great light transmittance are achieved, and a conducting coating layer and a substrate of the thin film have great adhesive force.

The invention discloses a preparation method and application of a poly-glycidyl methacrylate interosculated porous material. The preparation method is characterized in that the poly-glycidyl methacrylate interosculated porous material (PolyGMA) with an epoxy functional group is obtained through high internal phase emulsion polymerization of glycidyl methacrylate (GMA), and the material can adsorb a harmful substance namely phenol in smoke gases. The material can selectively reduce over 25 percent of the released amount of the phenol in cigarette mainstream smoke gas by adding 10 to 30 mg of the material into each cigarette filter stick, but the released amount of tar is basically not changed or is reduced slightly; and simultaneously, the material does not generate negative effect on the smoking quality of cigarettes, thereby fulfilling the aim of selectively reducing the released amount of the phenol in the cigarette smoke gas.

The invention discloses an epoxy resin thermal conductive composite material, preparation thereof and an application. According to the epoxy resin thermal conductive composite material, boron nitride with the surface coated with polymer is dispersed in epoxy resin, and the volume ratio of the boron nitride accounts for 3%-15% of the composite material. Preferably, the average particle size of the boron nitride is 10 micrometers to 40 micrometers. The polymer is polyglycidyl methacrylate, and the thickness of a polymer layer coating the surface of the boron nitride ranges from 3 nanometers to 10 nanometers. By improving a key thermal conductive filler structure in the epoxy resin thermal conductive composite material, additive amount and the like, the corresponding preparation method is adopted, and the problems of poor thermal conductive performance and high viscosity of epoxy resin composite materials can be effectively solved as compared with the prior art.

The invention discloses a quantum dot with high transparency and high fluorescence efficiency/epoxy resin nano composite material, preparation and applications thereof, and belongs to the technical field of nano composite material. Poly(n-butyl methacrylate-glycidyl methacrylate) P(BMA-GMA) amphiphilic two-section copolymer compatibilizer is introduced, the PBMA section of the P(BMA-GMA) copolymer is utilized to soak the oleic acid ligand on the quantum dot surface, the PGMA section of the P(BMA-GMA) is utilized to soak the epoxy substrate, and thus a good interface compatibilizing effect is achieved. The amphiphilic compatibilizing effect of the two-section copolymer is utilized to increase the interface compatibility of quantum dots in epoxy resin substrate, thus the quantum dots are evenly dispersed in the substrate, and the prepared quantum dot/epoxy resin nano composite material has excellent transparency and fluorescence performance, and has a wide application prospect in the field of white light packaging.

The invention relates to a method for preparing superparamagnetic microspheres with a surfactant-based nuclear shell, which comprises the following steps of: preparing monodispersed polyglycidyl methacrylate microspheres by a free radical polymerization of monomeric polyglycidyl methacrylate in the presence of an initiator and an emulsifying agent or a dispersing agent; preparing monodispersed porous polyglycidyl methacrylate microspheres with larger size by a one-step seed swelling polymerization; adding divalent and trivalent iron to stir, raising the temperature of the system, adding excessive concentrated ammonia water, and preparing monodispersed superparamagnetic microspheres in situ by an iron salt deposition and an alkaline coprecipitation method; the magnetic microspheres are subjected to surface carboxylic acid modification by distillation precipitation polymerization. The superparamagnetic microspheres with the surfactant-based nuclear shell have the advantages of good mono-dispersity, controllable magnetic content and the like, the microspheres have abundant carboxylic acid groups on the surface, and after a subsequent binding to biological ligands, and can be widely applied to the fields of biomedical analysis and detection, such as immobilized enzyme and cell separation, protein purification, immunoassay, and the like.

The invention discloses a series of low-toxicity and efficient cationic gene vectors with PGMA (polyglycidyl methacrylate) serving as a framework constructed by an ATRP (atom transfer radical polymerization) method, which belong to the technical field of nonviral gene vectors. The ATRP method is stable in polymerization reaction and easy in regulation and control, and can prepare various high-performance cationic gene vectors different in molecular weight and narrow molecular weight distribution according to needs. The prepared cationic gene vectors are high in storage stability, higher than gold mark PEI (polyethyleneimine) in transfection efficiency in cells such as Hepg2, C6, Cos7, HEK293 and the like and simple in use method, and have commercial potential.

The invention belongs to the field of nitroxide free radical catalysts, aims at solving the problem that the existing homogeneous catalyst TEMPO (tetramethyl-piperidyl-nitroxide free radical) is difficult to separate and recover after reaction and can not be reused to seriously restrict development of a catalytic system, and provides an epoxy polymer microsphere immobilized (tetramethyl-piperidyl-nitroxide free radical) TEMPO catalyst, as well as a preparation method and an application method thereof. According to the preparation method, 4-OH-TEMPO (4-hydroxy-2,3,6,6-tetramethyl-piperidyl-nitroxide free radical) is bonded on a (crosslinked poly glycidyl methacrylate microsphere) CPGMA to prepare the solid catalyst TEMPO/CPGMA shown in the general formula I immobilized by TEMPO. According to the preparation method, the TEMPO is subjected to chemical bonding on a solid carrier, immobilization of TEMPO is realized, homogeneous catalysis oxidation is changed to heterogeneous catalysis oxidation, and therefore, the heat stability of the catalyst is improved, separation of the catalyst from a reaction medium is convenient, the catalyst is reused, and high activity can be generated.

The invention discloses a polyethylene glycol-aminated poly(glycidyl methacrylate)-poly(diisopropylaminoethanol methacrylate) triblock polycation and a synthetic method thereof, and a dual acid-sensitivity multilayer cation micelle prepared from the triblock polycation and a preparation method thereof. The cation micelle comprises a neutral polyethylene glycol PEG external layer, an aminated poly(glycidyl methacrylate) PAG intermediate layer and a poly(diisopropylaminoethanol methacrylate) PDPA inner layer, wherein the PEG external layer can shield a part of positive charges and improve stability of the micelle, the PAG intermediate layer has positive electricity and can absorb electronegative nucleic acid drugs, and the PDPA inner layer has hydrophobicity and can entrap hydrophobic drugs. Furthermore, the invention also discloses application of the dual acid-sensitivity multilayer cation micelle in synchronous co-delivery of nucleic acid and hydrophobic anticancer drugs, and the dual acid-sensitivity multilayer cation micelle is mainly used for reversion of multidrug resistance of cancer cells or inhibition of cancer cell metastasis.

The invention relates to restricted access poly (styrene-co-divinyl benzene)-coated silica gel chromatographic packing and a preparation method thereof. The preparation method comprises the following steps of: introducing an atom transfer radical polymerization (ATRP) initiator into the surface of porous silica gel microspheres and coating poly (styrene-co-divinyl benzene) on the surface of silica gel through the grafting from method; then grafting polyglycidyl methacrylate on the surface of the coated layer; and further performing hydrolysis to get the hydrophilic surface so as to get the restricted access poly (glycidyl methacrylate-g-(styrene-co-divinyl benzene))-coated silica gel chromatographic packing. The polymer-coated silica gel chromatographic packing has the functions of combining with hydrophobic micromolecules and excluding biological macromolecules, and can perform effective separation on hydrophobic compounds in biological complex samples under the situation of eliminating the protein precipitation pretreatment process, be used as a chromatographic stationary phase or a solid-phase extraction agent, perform direct sample introduction, separation, extraction and determination on micromolecular compounds in biological or environmental samples and further realize the high-efficiency analysis and determination of micromolecular substances in a biological system.

The invention relates to a method for preparing high-capacity protein ion-exchange chromatographic medium through atom transfer radical polymerization. The method comprises a bromination procedure of coupling a glycidyl methacrylate microsphere with the microsphere of an initiator 2-bromoisobutyryl bromide and a synthesis procedure of initiating polymerization of monomeric compounds on the surface of the microspheres through free radical transfer so as to obtain the ion-exchange polymer grafted chromatographic medium. The method prepares the polymer grafted ion-exchange chromatographic medium through atom transfer radical polymerization technology; the synthesized polymer grafted ion-exchange chromatographic medium has controllable density and chain length of graft polymer; reaction conditions are mild; the selection range of the monomeric compounds used as monomer is wide; gamma globulin saturated adsorption capacity of the synthesized polymer grafted ion-exchange chromatographic medium can reach above 800 mg/g of a wet medium, so the chromatographic medium has excellent adsorptivity; and adsorption equilibrium can be realized within 5 min in a protein solution with a concentration of 1 mg/mL, so the chromatographic medium has wide application prospects.

The invention discloses a poly-glyceryl methacrylate grafted hydrophobic charge-induced chromatography medium and a preparation method thereof. The preparation method comprises the following steps: taking hydrophilic porous microspheres as a chromatography medium, activating the chromatography medium by virtue of an activating reaction, carrying out a poly-glyceryl methacrylate polymerization reaction on the surface of the activated chromatography medium, thereby obtaining a polymer grafted chromatography medium; and finally, coupling a hydrophobic charge-induced ligand, thereby obtaining the polymer grafting type hydrophobic charge-induced chromatography medium. The chromatography medium disclosed by the invention has the poly-glyceryl methacrylate grafting chain and hydrophobic charge-induced functional ligand, the ligand density is high, the dynamic loading capacity of target proteins such as antibodies is obviously improved at high flow velocity, the chromatography medium has salt-independent adsorption characteristics, and desorption and recovery can be realized by changing the pH value of the solution to be weakly acidic. The preparation process of the novel medium is simple and convenient, strict oxygen removal in the grafting reaction process is not needed, and the amount of catalysts and ligand is small.

The invention discloses a preparation method of a nanopolyaniline-containing compound anti-corrosion coating auxiliary agent, and relates to a polymer nano composite material. Monodisperse micron-graded poly(methyl methacrylate)glycidyl ester microspheres are obtained through dispersion polymerization; under an acid doped environment, aniline monomers are polymerized on the microsphere surface, polyaniline nanowires are loaded on the microspheres, and thus the micron-graded spherical anti-corrosion auxiliary agent is obtained; the auxiliary agent is mixed with epoxy matrix resin and all kinds of solvents for adjusting a coating, the microspheres are dissolved by a solvent, and at the same time, the polyaniline nanowires are dispersed in the coating; phenylamine has less use amount, can be highly dispersed, also has crosslinking functions, has large practical meaning, and has excellent industrialization prospect.

The invention discloses a preparation method of a theophylline molecular surface printing material, and relates to a molecular printing polymer. The preparation method comprises the following steps of: activating silica gel microparticles; connecting surface chemical bonds of silica gel microparticles with sulfydryl containing silane coupling agents; chemically grafting polyglycidyl methacrylate on surfaces of silica gel microparticles; modifying by 5-aminosalicylic acid; and preparing the surface molecular printing polymer of silica gel microparticles. According to the invention, high performance molecular printing polymer is prepared through a method of graft polymerization and crosslinking printing sequentially. The molecular surface printing material has special identifying selection and excellent combining affinity to theophylline.

The invention relates to a phase-change material microcapsule with photo-thermal conversion and energy storage properties and a preparation method. A microcapsule core is a phase-change material withheat storage capacity; the wall material is of a multi-wall structure, and a polydivinylbenzene high polymer shell layer is arranged in the wall material and is mainly used for packaging the phase-change material; an MXene shell layer is arranged outside and can be used for improving the encapsulation efficiency and the heat storage capacity of the microcapsule and endowing the microcapsule with aphotothermal conversion effect. According to the preparation method, a one-pot method is adopted to prepare the novel phase-change material microcapsule in a system in which amphiphilic macromolecule1, 1-stilbene-terminated polyglycidyl methacrylate and MXene coexist synergistically and stably. The microcapsule with the multi-wall structure is stable in shape and high in encapsulation rate, hasrelatively high latent heat storage density and excellent photothermal conversion performance, and greatly enriches the application of the phase-change material microcapsule in the fields of solar energy utilization and the like.

The invention relates to a preparation method of hydrophilic latex-agglomerated anion chromatographic packing. Produced resin is used for filling a chromatographic column. The preparation method comprises: agglomerating a quaternizated polyglycidyl methacrylate-dimethyl acrylate glycol ether hydrophilic nano spherical latex agglomeration agent and surface-sulfonated copolymer skeleton microspheres to obtain the hydrophilic latex-agglomerated anion chromatographic packing resin, wherein the agglomeration agent is uniformly adsorbed onto a sulfonation layer on the surface of the skeleton microspheres, and the sulfonation layer is completely coated. Fluorine ions and water negative peaks of a sample detected by a packing filled chromatographic column are completely separated, the peak of seven ions is sharp and symmetric, the spread is moderate, and the accuracy of a detection result is high.

The invention relates to a preparation method for a polymer microcapsule. The preparation method comprises the steps of using polyglycidyl methacrylate with surface activity and monomer polymerization function as a macromolecule emulgator and an initiator, triggering the polymerization of hydrophobe monomer under the condition of heating to obtain the polymer microcapsule. Compared with the current preparation method for the polymer microcapsule, the micromolecule emulgator and the initiator do not need to be added additionally, the system and the preparation process are simple, the post-treatment is simple and convenient, the universality is strong, and the cost is lower. The preparation method is suitable for the industrial large-scale production.

The invention relates to a graphene oxide (GO)-coated PGMA (poly-glycidyl mathacrylate) microsphere composite anti-corrosive coating additive and a preparation method thereof. The GO-coated PGMA microsphere composite anti-corrosive coating additive is characterized in that PGMA microspheres with uniform particle size distribution and micrometer size are prepared by a single dispersing method; a surfactant CTAB (cetyltrimethyl ammonium bromide) is adsorbed to the surface of each microsphere, the ammonia ions in the CTAB are positively charged, and the long alkyl chain has lipophilicity, so thatthe surface of each microsphere is positively charged after the CTAB is adsorbed to the surface of each PGMA microsphere; the GO has huge specific surface area, and contains a large amount of electronegative oxygen-containing function groups, such as epoxy groups, hydroxyl groups and carboxyl groups, the positive ions can be effectively adsorbed by electrostatic adsorption, and the GO irregularlycoats the surface of the polymer microsphere, so as to obtain the GO-coated PGMA microsphere composite anti-corrosive coating additive.

The invention belongs to the technical field of heavy metal environmental governance, and discloses a method for preparing a porous polymer microsphere with a heavy metal chelating function, porous poly glycidyl methacrylate polymer microspheres are prepared by free radical emulsion polymerization, and heavy metal chelating functional groups are used for modification of the surface of the microspheres and the surface of holes for establishment of heavy metal chelating adsorption channels to prepare the porous polymer microsphere with the heavy metal chelating function. The porous polymer microsphere with the heavy metal chelating function has the advantages of large specific surface area, many heavy metal chelating sites, and high efficiency, stability and durability of adsorption and removal of heavy metals, and can be conveniently bonded to the surface of a substrate.

The invention provides a core-shell structure type composite flame retardant and a preparation method thereof. The core-shell structure type composite flame retardant uses ammonium polyphosphate particles as a core and polyglycidyl methacrylate as a coated shell layer. The invention also provides a preparation method of the core-shell structure composite flame retardant. Because a surface layer of the flame retardant provided by the invention is made of waterproof polyglycidyl methacrylate, ammonium polyphosphate can be effectively protected from being dissolved and eroded by water, the water resistance of the ammonium polyphosphate is remarkably improved, a composite material in which the flame retardant is added can be applied to severe working environments such as damp and hot environments; because the polyglycidyl methacrylate has an epoxy group with extremely high reaction activity and can generate a good interface bonding function with an added polymer matrix through chemical reactivity, the mechanical properties of a flame-retardant polymer material can be remarkably improved, and the filling enhancement is realized. The preparation method provided by the invention is simple in process and strong in operability; the larger-scale production is easily realized.

The invention discloses a preparation method of a high-efficiency hydrophobic medium and an application of the high-efficiency hydrophobic medium in purification of defibrase. The preparation method comprises the following steps of: 1) preparing polyglycidyl methacrylate (PGMA) microspheres by virtue of a dispersion polymerization method; and 2) preparing the high-efficiency hydrophobic medium by taking the polyglycidyl methacrylate (PGMA) microspheres as a matrix, wherein the high-efficiency hydrophobic medium is filled in a stainless steel chromatographic column with a pressure of 20 MPa, and then the column is connected with a liquid chromatography system and used for purifying defibrase. The preparation method disclosed by the invention has the advantages that product purity is high, yield is high, operation is simple and convenient, industrialization requirements can be achieved, and popularization is facilitated.