108 results about "Amino functionalized" patented technology

The invention discloses a fruit and vegetable exosome extraction method based on ligand fishing. The fruit and vegetable exosome extraction method comprises the following steps: suspending amino-functionalized Fe3O4 (at) SiO2 nanoparticles in a glutaraldehyde solution, and adding activated agglutinin to obtain Fe3O4 (at) SiO2-agglutinin nanoparticles; adding a glutaraldehyde solution into agarose gel to obtain a size exclusion chromatographic column filler; the method comprises the following steps: dispersing Fe3O4 (at) SiO2-lectin nanoparticles in a PBS buffer solution to obtain a uniform suspension, adding the uniform suspension into a size exclusion chromatographic column filler to obtain a uniform slurry, filling the size exclusion chromatographic column with the uniform slurry, and flushing with the buffer solution to form a magnetic bead stationary phase; and loading fruit and vegetable supernatant into a size exclusion chromatographic column, passing through the magnetic bead stationary phase, cleaning residual impurities combined on the exosome-magnetic bead compound by using a buffer solution, and dissociating the exosome from the magnetic beads by using a competitive eluent of the exosome to obtain the high-purity fruit and vegetable exosome. The problem that an existing exosome extraction method is difficult to meet the requirements of high efficiency, simplicity, high purity and high activity at the same time is solved.

The invention relates to the technical field of biomedical dressings, in particular to a dressing for a diabetic foot wound surface and a preparation method of the dressing. 0.2 to 0.8 part of reduced graphene oxide; 2 to 5 parts of beta-1, 3-glucan modified by chondroitin sulfate; 0.08 to 0.3 part of silver nitrate; 3 to 7 parts of N-isopropyl acrylamide-co-acrylic acid; 0.15 to 0.4 part of N, N '-methylene bisacrylamide; 2 to 5 parts of sulfhydrylated hyaluronic acid; 0.3 to 0.8 part of D-alpha-vitamin E polyethylene glycol succinate; 2 to 5 parts of amino-functionalized mesoporous silica; 1 to 3 parts of L-arginine-L-glutamate; 0.1 to 0.4 part of genipin; the super-strong mechanical property and the super-strong flexibility are realized, so that the dressing can better adapt to the irregular shape of a wound surface, and continuous protection is provided.

The invention provides an intelligent antibacterial konjac glucomannan composite film and a preparation method thereof. The intelligent antibacterial konjac glucomannan composite film is prepared by carrying out graft copolymerization on oxidized konjac glucomannan OKGM and amino-functionalized poly (N-isopropylacrylamide) PNIPAM-NH2 and then crosslinking with an antibacterial agent, the tail end of a molecular chain of the amino-functionalized poly (N-isopropylacrylamide) is provided with an amino group. The intelligent antibacterial konjac glucomannan composite film disclosed by the invention has temperature responsiveness, can control the release of an antibacterial agent according to environmental changes, ensures that the antibacterial agent is accurately released as required, and effectively prolongs the food preservation time and the food shelf life. The film is good in biocompatibility, has no obvious toxic reaction on human tissues and cells, and provides possibility for application in the field of biomedicine. Besides, the film has degradability, and the OKGM and the chitosan are natural high polymer materials and can be decomposed into harmless substances by microorganisms in the natural environment, so that the film meets the requirements of environmental protection and is beneficial to reducing environmental pollution.

Functionalized and crosslinked material, which may optionally be employed as a sorbent, as well as methods of making such materials and systems of using such materials are provided. The processes, methods, systems and materials herein can be used for the separation of carbon dioxide from fluid streams. In one aspect, a method of forming functionalized crosslinked particles comprises introducing at least a portion of a surface of each porous particle in at least a subset of a plurality of porous particles to a crosslinking agent and a first reagent comprising at least one adsorbing moiety. Examples of adsorbing moiety include silane-functionalized amines, amino-functionalized silanes (aminosilane), and polyamines. In some aspects the method further comprises introducing the porous particles to a second reagent comprising at least one interaction moiety such as a silane-functionalized amine, amino-functionalized silane (aminosilane), or polyamine. Examples of crosslinking agent include dialdehyde, diisocyanates, dihaloalkane, diepoxide and dianhydrides.

The invention relates to amino-functionalized polyethersulfone as well as an efficient preparation method and application thereof. The invention belongs to the field of preparation of functionalized polyethersulfone. The invention aims to solve the technical problems of high cost, tedious steps and low synthesis efficiency of the existing method for preparing amino-functionalized polyether sulfone. The amino-functionalized polyethersulfone polymer is synthesized and prepared by selecting a specific active monomer, so that the steps of protecting and deprotecting amino groups on the monomer are not needed in the polymerization process, and a conjugated structure in the specific dichloro monomer can stabilize the amino groups and obviously improve the polymerization reaction efficiency. The preparation method has the advantages of simple process, easily available raw materials and low cost. The method is applied to the fields of petrochemical engineering, fine chemical engineering and medical treatment.

The invention relates to an anti-icing super-hydrophobic coating for an aluminum conductor as well as a preparation method and application of the anti-icing super-hydrophobic coating. Single-ended epoxy fluorosilicone oil is grafted to the surface of an amino-functionalized metal organic framework material through an epoxy-amino ring-opening reaction to obtain a hydrophobically modified metal organic framework material, the hydrophobically modified metal organic framework material has a flexible fluorocarbon chain shell, and according to the design, the mechanical strength of a coating is enhanced through a rigid framework of MOFs; the stress concentration is relieved by utilizing the flexibility of a molecular chain of the fluorosilicone oil. The modified metal organic framework material is further dispersed in a matrix composed of fluorine-containing epoxy resin and an amino fluorosilicone oil curing agent, a multi-layer micro-nano structure is formed through ultrasonic dispersion and spraying curing processes, and the super-hydrophobic coating is obtained. According to the coating, through the synergistic effect of fluorosilane grafting modification and a micro-nano structure, the excellent performance that the static water contact angle is larger than or equal to 155 degrees, the rolling angle is smaller than or equal to 4 degrees, the ice adhesion strength is smaller than or equal to 40 kPa, and the wear resistance is excellent is achieved.

The invention discloses a polytetrafluoroethylene composition and a preparation process thereof, and relates to the technical field of high polymer materials, and the preparation process comprises the following steps: mixing plasma activated amido functionalized polytetrafluoroethylene powder with hydrophobic enhanced functionalized boron nitride microspheres under the protection of nitrogen to obtain an interface reactive compound premix; and placing the interface reactive composite premix in a mold, performing hot pressing to initiate an interface chemical bonding reaction between the plasma activated amino functionalized polytetrafluoroethylene powder and the hydrophobic enhanced functionalized boron nitride microspheres and realize surface passivation of the polytetrafluoroethylene powder, and then performing cooling demolding to obtain the polytetrafluoroethylene composition. The polytetrafluoroethylene composition obtained by the invention has high interface bonding strength, ultralow dielectric loss and excellent long-term hygrothermal environment stability, and effectively solves the contradiction between mechanical enhancement and dielectric property degradation and insufficient long-term reliability in the traditional modification technology.

The present disclosure provides a preparation method of a porous hydrogel adsorbent based on Radix astragali residues, including the following steps: subjecting residues of Chinese herbal medicine Radix astragali as a precursor to bleaching with NaClO2, alkaline washing with KOH, and high power ultrasonic treatment, thereby obtaining a precursor solution of uniformly dispersed cellulose nanofibers (CNFs); adding the precursor solution of CNFs to a mixed solution of N,N′-methylene bisacrylamide (MBA), acrylic acid (AA) and ammonium persulfate (APS), shaking evenly, and initiating a polymerization reaction at a predetermined temperature to form a monolithic gel; and cleaning the monolithic gel, putting the cleaned monolithic gel into a dimethyl sulfoxide (DMSO) solution containing epichlorohydrin to allow reaction, and transferring the product of the reaction to an aqueous sodium hydroxide solution containing triethylene tetramine to allow reaction, thereby finally obtaining an amino-functionalized porous hydrogel adsorbent.

The application discloses a modified polyurethane water-based functional coating and a preparation process thereof, and belongs to the technical field of water-based functional coatings. In the application, N,N-dimethylethanolamine is used as a blocking agent to block the isocyanate prepolymer, so that a latent type blocked isocyanate water-based polyurethane emulsion is prepared; lactide monomers, epoxy group grafted modified nano silicon dioxide and amino functionalized light stabilizer microcapsules are added into the emulsion; curing is carried out by using a two-stage process, that is, after preheating and water removal and film formation, 130-150 DEG C baking is carried out to trigger the deblocking of the DMEA blocked isocyanate, and the tertiary amine groups in the deblocked DMEA molecules immediately initiate the ring-opening polymerization of the premixed lactide monomers in the system in situ to generate polylactic acid segments which are chemically grafted to the crosslinked network. The application realizes the synchronous linkage of crosslinking and curing and polymer toughening, and the obtained coating has the characteristics of high crosslinking density, excellent flexibility and low internal stress.

The application provides a carbon nanotube grafted polymer nano plugging agent, a preparation method thereof and a prepared drilling fluid, and the preparation method comprises the following steps: S1, reacting acrylic acid and amino functionalized multi-walled carbon nanotubes in a mass ratio of 1:0.1-0.2 to generate acrylic acid modified carbon nanotubes; and S2, performing a copolymerization reaction on acrylamide, the acrylic acid modified carbon nanotubes and octadecyl dimethyl allyl ammonium chloride in a mass ratio of 25:0.2-0.8:1.2-2.0 to obtain the carbon nanotube grafted polymer nano plugging agent. The carbon nanotube grafted polymer nano plugging agent comprises an amide group, a quaternary ammonium salt structure and an amino group, enhances the micro-nano plugging capacity of the plugging agent, enhances the inhibition capacity of the plugging agent to the hydration expansion and dispersion of formation mud shale, and has good temperature resistance, salt resistance and dispersion stability.

The invention belongs to the technical field of high polymer materials and coatings, and relates to an amino POSS (Polyhedral Oligomeric Silsesquioxane) crosslinking system for a water-based coating. The system takes water as a continuous phase, and comprises a water-soluble amino functionalized polyhedral oligomeric silsesquioxane (NPOSS) and an epoxy functionalized polyacrylate polymer microsphere aqueous dispersion, additives belonging to volatile organic compounds (VOC), such as organic solvents and coalescing agents, are not additionally added into the system. When in use, NPOSS as a multifunctional cross-linking agent is subjected to amine-epoxy addition reaction with an epoxy functionalized polymer in a water phase, and a cross-linked thermosetting coating can be formed on the surface of a base material such as an aluminum material, glass and the like. Compared with an existing water-based paint technology, the technology has the advantage that VOC emission in the film forming process of the water-based paint is remarkably reduced. Meanwhile, the NPOSS endows the coating with excellent thermal stability, mechanical strength and chemical resistance. The curing strategy is completely water-based, simple and convenient in process, environment-friendly and suitable for various fields with environmental protection requirements such as home furnishing, automobiles, aerospace and the like.

Amino-functionalised graphene oxide (GO) for use in the generation of nitric oxide (NO) in vivo. A coating for an implantable medical device comprising amino-functionalised GO, a coated implantable me

The present invention relates to a sulfur crosslinkable rubber compound, a vulcanized rubber, a component, and a corresponding vehicle tire, the sulfur crosslinkable rubber compound comprising at least one polyisoprene at 40 to 80 phr, at least one amino-functionalized butadiene rubber at 10 to 40 phr and having a cis content of less than 80%, and at least one functionalized SBR rubber at 10 to 50 phr.

The present invention relates to an oil-based composition containing an oil-based solvent selected from hydrocarbon oils and an alkyl-terminated amino-functionalized silicone dissolved or dispersed in the oil-based solvent, as well as a process for its preparation. The invention also relates to a hair conditioning formulation containing the oil-based composition and a method of conditioning hair using the formulation.

The application discloses a kind of multistage filtration systems for ultrapure water production process, multistage filtration system includes primary filter device and secondary filter device, RO concentrated water stock solution is sequentially transported to primary filter device, secondary filter device;The inside of primary filter device is equipped with colloidal silica filter material, the inside of secondary filter device is equipped with colloidal iron filter material;Colloidal silica filter material is amino functionalized MOFs nanofiber composite membrane, colloidal iron filter material is nanofiber membrane with surface grafted hydroxamic acid group.The multistage filtration system for ultrapure water production process provided by the application has excellent colloidal silica removal effect and excellent colloidal iron removal effect.

An agent for dying (e.g. coloring) keratinous material, in particular human hair, is disclosed. The agent comprises (a1) at least one alkyl (poly)glycoside, (a2) at least one pigment, and (a3) at least one amino-functionalized silicone polymer. A process for dyeing keratinous material with the agent is also disclosed. The process comprises preparing an application mixture comprising, applying the application mixture to keratinous material for a time sufficient to expose the keratinous material to the agent, and then rinsing the application mixture from the keratinous material with water. A multicomponent packaging unit (kit-of-parts) for dyeing keratinous material with the agent is also disclosed.

A preparation for dyeing keratin fibers, in particular human hair. The preparation includes (a1) at least one amino-functionalized silicone polymer, and (a2) at least one white pigment. The invention also relates to a process for bleaching keratin fibers, wherein the aforementioned preparation is used on the keratin fibers, in particular human hair.

Various embodiments of the present invention provide sizing compositions, fiber glass strands, cement boards, and other products incorporating fiber glass. In some embodiments, a sizing composition of the present invention comprises a starch, a nonionic lubricant, a silane comprising at least one amine and at least one aryl or arylene group, and an aminofunctional oligomeric siloxane.

The present invention relates to a biocatalyst for organic synthesis, comprising a controlled porosity silica (CPS) as a support material, wherein the pore diameter is from about 20 to about 100 nm, the support material comprises an amino-functionalized surface, and one or more catalytically active enzymes immobilized on the support material. The present invention also relates to the use of such biocatalysts and a method for their production.

The application relates to the technical field of packaging materials, and discloses an antistatic aluminum plastic film, a preparation method and application in lithium battery packaging, wherein the antistatic aluminum plastic film is prepared by dry compounding of an outer nylon film, an intermediate aluminum foil layer and an inner polyethylene composite film; the polyethylene composite film is composed of 60-80 wt% of metallocene linear low-density polyethylene resin and 20-40 wt% of carbon black-graphene polyethylene composite masterbatch; the carbon black-graphene hybrid particle contains an alkenyl functional group on the surface, and a free radical addition grafting reaction occurs between the linear low-density polyethylene resin and the carbon black-graphene polyethylene composite masterbatch through the action of an initiator; and the carbon black-graphene hybrid particle is prepared by Schiff base reaction of a dialdehyde alkenyl functional modifier and amino-functionalized carbon black and amino-functionalized reduced graphene oxide. The aluminum plastic film prepared by the application has excellent antistatic performance, heat sealing performance and barrier performance, and is used for packaging of lithium iron phosphate powder which is a positive electrode material of a lithium battery.

The invention relates to the technical field of gas adsorption separation, in particular to a method for improving stability of an IL-coated MOF composite material and preparation and application of the material. The method comprises the following steps: synthesizing multi-amino functionalized IL; carrying out cross-linking on the multi-amino functionalized IL by adopting a double epoxy group cross-linking agent to obtain cross-linked IL; and compounding the cross-linked IL and the MOF material through impregnation to prepare the IL-coated MOF composite material. The method belongs to a material post-modification strategy, the basic synthesis process of MOF or IL does not need to be changed, only one-step crosslinking is added before compounding, the crystalline structure of MOF is not damaged, dispersed IL molecules are locked into a whole through crosslinking, migration and loss of IL in MOF are limited, and the prepared IL-MOF composite material has excellent stability, adsorption performance and cycle performance and is suitable for industrial production. And the application requirements of industrial COS trapping and separation are completely met.

The present application provides a bifunctional heterogeneous catalyst and its preparation method and application, which belongs to the technical field of polymer compounds. Amino-functionalized imidazolium ionic liquid, AIBN, etc. are synthesized to obtain polyaminovinyl imidazolium hydrobromide ionic liquid, which is deprotonated to obtain amino-modified polyvinyl imidazole, and 2,4,6-trichloro-1,3,5-triazine is added to react to obtain a bifunctional heterogeneous catalyst. The above-mentioned bifunctional heterogeneous catalyst can achieve high selectivity and high yield cyclization of epoxides.

The application discloses a kind of composite flame retardant, epoxy resin composite material and preparation method thereof, the amino functionalized MOF nanoparticles of the present application is synthesized by DMF aqueous solution system one-step solvothermal reaction, then it is prepared MOF@APP flame retardant by the way of in-situ composite mediated by silane coupling agent, ultrasonic auxiliary, overall process is simple, condition is mild, controllability is strong, can stably synthesize the MOF nanoparticles of amino functional group abundance, particle size is uniform, and realize the stable composite of MOF and ammonium polyphosphate, avoid the phase separation, uneven dispersion problem brought by simple physical mixing, finally the flame retardant obtained has the carbon catalysis of MOF, smoke adsorption function and APP's intumescent flame retardant function, and the two form significant flame-retardant synergistic effect, fundamentally solve the problem that traditional APP flame retardant adds large amount, and the compatibility of epoxy resin is poor, easily leading to the serious loss of matrix mechanical property.

The invention relates to the technical field of porous materials, and discloses preparation of an amino-functionalized porous organic cage and application of the amino-functionalized porous organic cage in acetylene / carbon dioxide gas separation. The preparation method comprises the following steps: introducing a triamine ligand, and directionally modifying amino in a cavity of a porous organic cage, so that the adsorption capacity and separation selectivity of the material to C2H2 / CO2 are improved, complete separation of C2H2 / CO2 can be realized, and the cycle stability is excellent. The porous organic cage material has wide application prospects in the fields of acetylene purification, carbon capture and the like.

The invention relates to the technical field of industrial solid waste recycling and road engineering materials, and discloses a multi-solid-waste composite roadbed material and a preparation method thereof.The preparation method specifically comprises the steps that on the basis of the Schiff base condensation reaction mechanism, aldehyde group functionalized light-stable montmorillonite and octa-phenylamino-POSS functionalized asphalt which are researched and developed independently are subjected to chemical bonding type compounding, and the composite roadbed material is obtained; the high-performance asphalt is prepared; high-performance asphalt is emulsified to obtain high-performance emulsified asphalt, the high-performance emulsified asphalt and cement are used as organic-inorganic composite gelling components, an industrial solid waste system composed of ardealite, titanium gypsum and yellow phosphorus slag is immobilized, and the multi-solid-waste composite roadbed material is prepared and shows excellent ultraviolet aging resistance. And the compressive strength can meet the technical requirements of cement stabilizing materials for heavy traffic load grade bases of expressways and first-grade highways in JTG D50-2017 on 7d unconfined compressive strength of 4.0-6.0 MPa.

Coating compositions are disclosed that can be applied to at least a food-facing surface of a molded fiber container to make the coated container suitable for applications involving long term storage of a dry or frozen food item combined with short term contact with the food item in a liquid or moist state. The coating compositions include carboxylated polyvinyl alcohol copolymer and a crosslinking resin that is epichlorohydrin-based and / or azetidinium-functionalized. The compositions can also include clay particles or other suitable fillers. After crosslinking and drying, the compositions form a thermoset barrier coating in which the polyvinyl alcohol is bonded to the crosslinker by a plurality of function groups including ester functional groups.

The invention discloses a preparation method of a mesoporous silica nanosphere composite material and application of the mesoporous silica nanosphere composite material as a lithium ion battery negative electrode material, and belongs to the field of material synthesis. The preparation method comprises the following steps: 1) dropwise adding a certain amount of a silane coupling agent and a silicon source into an aqueous solution containing a cationic surfactant to obtain a reaction solution, and after the reaction is completed, carrying out suction filtration, pickling and drying to obtain amino-functionalized mesoporous SiO2 nanospheres; 2) ultrasonically dispersing the obtained mesoporous SiO2 nanospheres in an aqueous solution containing carboxylic acid to obtain a dispersion liquid A; 3) dissolving an organic compound containing a nitrogen heterocyclic ring in water to obtain a solution B; 4) mixing the dispersion liquid A and the solution B, and after the reaction is completed, carrying out suction filtration to obtain a precipitate; and 5) carrying out carbonization reaction on the precipitate in an inert atmosphere to obtain the nitrogen-doped SiO2 (at) C composite material. The micron-sized two-dimensional sheet-shaped carbon structure is constructed through amidation reaction, and nano SiO2 is anchored in the micron-sized two-dimensional sheet-shaped carbon structure, so that the preparation method is ingenious and efficient, and has expandability and flexibility required by commercialization. The one-step amino functionalized mesoporous SiO2 nanosphere is uniform in particle and ordered in pore channel, and can be applied to the fields of catalysis, energy, adsorption, medicine and the like.

The present application relates to a kind of self-repairing solvent-free epoxy heavy-duty coating and its preparation and use method, belong to epoxy resin coating technical field.The coating is composed of A, B component;A component includes epoxy resin matrix, first microcapsule dispersed therein, inhibitor microcapsule and amino functionalized graphene nanosheet, the first microcapsule core is low viscosity epoxy healing agent, and the wall is polyurea, the core of inhibitor microcapsule is volatile inhibitor, and the wall is polylactic acid;B component includes modified amine curing agent and the second microcapsule dispersed therein, and the core of second microcapsule is latent curing agent, and the wall is polymethyl methacrylate.The coating of the present application has self-repairing and heavy-duty function, is suitable for the harsh corrosion environment of ship, aircraft, high-speed rail, ocean engineering and other fields, can significantly prolong the service life of component.

This invention relates to the field of air pollutant control and environmental protection materials technology, and discloses a low-temperature oxidation adsorbent and its application in flue gas NO. X The deep denitrification process utilizes a low-temperature oxidation adsorbent comprising an amino-functionalized micron-sized diatomite core layer and an aldehyde-functionalized nano-manganese-cerium composite oxide active shell layer. The core layer and the active shell layer are bonded by Schiff base covalent bonds formed by the condensation of amino and aldehyde groups, and C=N covalent bonds are formed at the interface between the two phases, constructing a micro-nano hierarchical composite material with integrated adsorption and catalysis functions. The micro-nano dual-scale rough structure on the surface of this material, along with the synergistic effect of low surface energy phenylsiloxane and diundecyl long-chain hydrophobic groups, endows the catalyst with excellent hydrophobic properties. Under harsh high humidity conditions of 100℃ and 10-20 vol% H2O, the catalyst can still maintain a denitrification rate of over 81%, and the activity loss rate is significantly lower than that of traditional physical mixed catalysts, effectively coping with fluctuations in industrial high-humidity desulfurization flue gas.

The invention provides a bowl-shaped Janus mesoporous silica nano motor and a preparation method and application thereof, and belongs to the technical field of novel biomedical materials and eye disease treatment. The preparation method comprises the following steps: preparing ZIF-8 amp by taking a ZIF-8 nanocube as a seed and taking tetraethoxysilane as a silicon source; the preparation method comprises the following steps: preparing an mSiO2 anisotropic nano hybrid, performing amino functional modification, etching to remove a ZIF-8 core to obtain amino functional bowl-shaped mesoporous silicon dioxide, and passing through B-mSiO2amp; and asymmetrically and covalently grafting catalase on the outer surface of the Janus mesoporous silica nano-motor through amino active sites on the surface of NH2 to obtain the bowl-shaped Janus mesoporous silica nano-motor. The nano-motor prepared by the invention can realize directional autonomous movement in the presence of H2O2 at an infected part, effectively enhances the penetrating ability of a drug across a corneal barrier, goes deep into corneal stroma and a bacterial biofilm, and solves the problem of low delivery efficiency of a traditional drug.