63 results about "Hydrophilic polymers" patented technology

The invention discloses ceramsite lightweight aggregate structural concrete and a preparation method thereof, and belongs to the technical field of concrete. The ceramsite lightweight aggregate structural concrete is prepared from the following raw materials in parts by mass: 240 to 270 parts of cement, 25 to 35 parts of mineral powder, 80 to 95 parts of fly ash, 210 to 250 parts of coal gangue crushed materials, 725 to 805 parts of modified coal gangue ceramsite, 10 to 30 parts of waste rubber materials, 3.5 to 5 parts of water reducing agents and 165 to 180 parts of water. The modified coal gangue ceramsite is obtained by coating the surface of a coal gangue ceramsite matrix with an epoxy resin layer and then grafting a hydrophilic polymer, the porosity of the coal gangue ceramsite matrix is 40-60%, and the aperture ratio is 1.5-6%. The epoxy resin layer on the surface of the modified coal gangue ceramsite provides an anti-permeability barrier, the hydrophilic polymer on the surface adjusts the wettability of the ceramsite, the binding force with other components of the concrete is improved, and the concrete has excellent shrinkage and dry crack resistance.

The invention provides a hydrophilic modified polytetrafluoroethylene oil removal film and a preparation method thereof. A modified layer of the hydrophilic modified polytetrafluoroethylene oil removal film is mainly prepared from the following raw materials in percentage by mass: 8-12 wt% of a hydrophilic vinyl monomer, 0.3-0.6 wt% of a cross-linking agent, 0.2-0.5 wt% of an initiator and the balance of a deionized water solvent. A new chemical grafting modification strategy is adopted, the surface of the PTFE membrane is activated through low-temperature plasma, co-grafting and cross-linking polymerization of a hydrophilic monomer and a cross-linking agent on the surface of the PTFE membrane are initiated, and a layer of firm hydrophilic polymer brush with a three-dimensional network structure is constructed on the surface of the membrane; a stable hydration layer is formed on a membrane-water interface, the PTFE membrane is endowed with excellent underwater super-oleophobic property, the oil-water separation efficiency, flux and anti-pollution capacity of the PTFE membrane are remarkably improved, the technological process is simple, and the product performance is stable.

The invention relates to the technical field of biomedicine nanotechnology, in particular to a high-stability engineered exosome based on rigid hydrophobic anchoring and micelle disassembly and purification as well as a preparation method and application of the high-stability engineered exosome. According to the invention, a ternary surface structure of rigid hydrophobic anchoring-hydrophilic polymer spacer arm-targeting ligand (L-S-T) is constructed, cholesterol hemisuccinate or multi-branched lipid is selected as an anchoring group, and the problem that conventional phospholipid modification is easy to fall off in vivo and in an albumin-containing preparation is obviously solved; a technology of'micellar insertion after temperature control 'combined with'CMC critical concentration adjustment and purification' is adopted, lossless insertion of functional molecules is realized by utilizing thermodynamic driving force, and residual micelles are induced to be disintegrated into monomers by adjusting the concentration of a system to be lower than the concentration of critical micelles, so that efficient removal of free impurities is realized through conventional ultrafiltration. The engineered exosome has the advantages of long circulation, high targeting and excellent storage stability, and has important clinical application and commercial transformation prospects.

The invention belongs to the technical field of taxifolin, and discloses a taxifolin compound, a preparation method thereof and application of the taxifolin compound in the fields of relieving, oil control and senility .The taxifolin compound contains modified beta-cyclodextrin, taxifolin and auxiliary components, and the modified beta-cyclodextrin is modified through a polar group; the auxiliary component is selected from one or more of a hydrophilic polymer, an antioxidant and a targeting carrier. The taxifolin compound provided by the invention is high in inclusion rate and good in water solubility, the polar group modified beta-cyclodextrin can finely adjust the space structure of a cavity to expand an opening, the polar group modified beta-cyclodextrin has high matching degree with the molecular structure of taxifolin, a hydrophobic aromatic ring of taxifolin can enter the cavity to be combined with a hydrophobic core, and the taxifolin compound is high in inclusion rate and good in water solubility. The water solubility is good. The taxifolin compound provided by the invention is strong in anti-inflammatory ability, has a remarkable soothing effect, and also has excellent anti-aging and oil-control effects.

The application provides a zwitterionic brush double hydrogel surface modified polytetrafluoroethylene (PTFE) hydrophilic antifouling hollow fiber membrane and a preparation method thereof, which can significantly improve the hydrophilicity and antifouling performance of the PTFE hollow fiber membrane. The preparation method comprises the following steps: step 1, putting pretreated PTFE membrane filaments into a PVA solution for immersion; step 2, immersing a glutaraldehyde / citric acid solution; step 3, balancing in water; step 4, immersing a PIC hydrogel solution; step 5, immersing an iron ion-containing solution again; and step 6, balancing in water. The modification method can significantly improve the water flux of the PTFE hollow fiber membrane, and the modified double hydrophilic polymer has high antifouling performance.

The application discloses a kind of charged hydrophilic polymer porous membrane, its preparation method and application in polysaccharide concentration purification in Chinese herbal medicine, belong to porous membrane technical field.It includes: while the non-solvent phase separation of film-forming polymer solution and the formation of separation layer on the outer surface of polymer membrane, simultaneously coating water-soluble coating layer polymer solution on the surface of separation layer, obtain charged hydrophilic polymer porous membrane;Film-forming polymer solution uses fluorine-containing polymer as film-forming base material, uses nitrogen-containing small molecule as first solvent, uses macromolecular organic matter as pore-forming agent.The application is applied to polysaccharide concentration purification in Chinese herbal medicine, solve the problem that the membrane surface opening rate is low, hydrophilic and poor negative charge of existing non-solvent phase separation technology is not applicable to polysaccharide concentration purification in Chinese herbal medicine, the opening rate of charged hydrophilic polymer porous membrane prepared is high, cutting molecular weight is 10-1000kDa, and can realize membrane forming, improve surface opening rate and surface hydrophilic negative charge modification simultaneously.

The application discloses a responsive fluorescent / phosphorescent dual-mode carbon quantum dot composite material, and is characterized in that biomass such as yacon peel is used as a carbon source, ethylenediamine is used as a nitrogen source, nitrogen-doped carbon quantum dots are prepared through a one-step hydrothermal method, the nitrogen-doped carbon quantum dots and hydrophilic polymers are uniformly dispersed in deionized water to obtain the responsive fluorescent carbon quantum dot composite material, and the ink prepared by using the composite material has the following characteristics: the printed pattern is invisible under natural light, can display cyan fluorescence under ultraviolet light, presents green phosphorescence after the ultraviolet light is removed, and can realize fluorescent / phosphorescent dual-mode anti-counterfeiting functions. 3+ In addition, the printed pattern can undergo fluorescence quenching under alkaline solution or Fe 3+ solution, realizes dynamic response anti-counterfeiting functions, and solves the problems that the existing carbon quantum dots have single light-emitting mode and are difficult to have dynamic response and dual-mode light-emitting functions.

The invention discloses a total heat exchange membrane and a preparation method thereof, the total heat exchange membrane comprises: a compact layer, the compact layer comprises a hydrophilic polymer substrate and an MXene functional filler, the hydrophilic polymer substrate comprises one or more of polyvinyl alcohol, polyvinylpyrrolidone, polyurethane and polyacrylic resin; the MXene functional filler is an MXene material subjected to antibacterial modification treatment; the porous support layer is coated with the compact layer, and the porous support layer is prepared from a polymer membrane material subjected to hydrophobic modification treatment. The total heat exchange membrane comprises a compact layer and a porous supporting layer, and the compact layer comprises a hydrophilic polymer base material and antibacterial modified MXene functional filler, so that high moisture permeability and antibacterial property of the total heat exchange membrane can be realized; the porous supporting layer is prepared from a polymer film subjected to hydrophobic modification treatment, has hydrophobicity, reduces adhesion of water molecules, and can reduce mass transfer resistance.

The application relates to the field of high-molecular polymer materials, and particularly discloses a preparation method of a high-penetration alloy hollow fiber ultrafiltration membrane with a twist structure, which comprises the following steps: (1) preparation of a twist structure-containing polyarylether sulfone; (2) preparation of a casting solution; and (3) preparation of the alloy hollow fiber ultrafiltration membrane.The high-penetration alloy hollow fiber ultrafiltration membrane prepared by the method adopts twist structure-containing rigid S-PAES, hydrophobic fluorine-containing S-PAES is blended with hydrophilic PVP, after the casting solution is solidified into a hollow fiber membrane form, specific hydrophilic holding post-processing is adopted, chemical reactions between groups are used to form stable covalent structures between the hydrophilic polymers, and the hydrophilic durability of the alloy ultrafiltration membrane is maintained.

The present application relates to the field of daily chemical technology, and especially relates to a breakable sunscreen condensation bead composition and a preparation method and application thereof. The composition has independent granular shape and is transformed from granular shape into continuous phase emulsion under external force, and the composition comprises (A) a gel skeleton component containing two or more than two hydrophilic polymer materials with different rheological behaviors; (B) a sunscreen active component containing one or more than one organic sunscreen agent and / or inorganic sunscreen agent; (C) an oil phase and an emulsifier for forming an emulsified internal phase embedding the sunscreen active component; (D) an efficacy composition. Compared with the prior art, the present application realizes the structural expression of a high sunscreen load system by forming a three-dimensional weak cross-linked gel network cooperatively formed by multiple hydrophilic polymers, combining an oil phase emulsified internal core and a surface structure regulation component, so that the composition has a stable condensation bead shape in a storage state, can be broken and release the internal emulsified phase under external force, and thus realizes rapid spreading.

This invention provides a superhydrophilic polymer network composite material, its preparation method, and its applications. The superhydrophilic polymer network composite material includes a polymer network substrate having a network structure formed by polymers; a metal transition layer coated on the polymer network substrate; a metal porous layer coated on the metal transition layer, having a micro / nano porous structure; and a hydrophilic polymer layer comprising a hydrophilic polymer filled within the metal porous layer. The multilayer reinforced superhydrophilic polymer network composite material provided by this invention has high porosity, good hydrophilicity, and high water storage and capillary capacity, making it suitable for preparing heat exchanger cores and for applications in oil-water separation and other fields.

The application provides a foam stabilizer raw material system, a method for preparing a nano stable foam agent, the nano stable foam agent and application. The raw material system comprises inorganic nanoparticles, an organic monomer, an initiator, a catalyst and a hydrophobic modifier; wherein the organic monomer has an electrically neutral hydrophilic group. According to the technical scheme of the application, the foam stabilizer prepared from the system is composed of nanoparticles, which not only have hydrophobic groups and can have hydrophobic interaction with the tail of a foaming agent, but also have electrically neutral hydrophilic polymer groups on the particles, which can play a role in temperature resistance and salt resistance on one hand; on the other hand, compared with some anionic polymers, such as 2-acrylamido-2-methylpropane sulfonic acid sodium polymer, the electric charge repulsion with the head group of a surfactant can be reduced or avoided, the adsorption of the nanoparticles on the gas-liquid interface is promoted, and then the stability of the foam is improved.

The present disclosure provides an ADC comprising a plasmin cleavage site. The ADC according to the present disclosure can have a hydrophobic portion between an antibody and a plasmin cleavage site, and the hydrophobic portion includes no uncharged hydrophilic polymers such as polyethylene glycol (PEG).

The invention relates to a preparation method of a super-hydrophilic surface constructed by an ordered microstructure and a coating of the super-hydrophilic surface, and belongs to the technical field of preparation of surface functionalized coatings. Comprising the following steps: depositing an HMDSO polymer on the surface of a substrate by adopting PECVD (Plasma Enhanced Chemical Vapor Deposition) to form an initial organic silicon deposition layer; stopping ventilation and plasma, and regulating and controlling the density of surface active groups after a period of time; a TMCTS polymer is deposited on the surface of the obtained organic layer, so that a fragment structure formed after TMCTS plasma activation is preferentially deposited on surface active sites, and an ordered cellular microstructure is formed; and performing oxygen plasma modification and hydrophilic polymer molecular chain grafting on the surface with the microstructure to construct a super-hydrophilic functional layer. According to the preparation method disclosed by the invention, ordered construction of a surface microstructure is realized by cooperatively regulating chemical characteristics, active sites and local selective growth of the precursor, and the coating with high light transmittance, long-term stable super-hydrophilicity and excellent anti-fog performance is obtained by acrylic acid grafting.

Provided are a highly sensitive detection method for a target substance and a reagent for inspection thereof. Specifically, provided is a method of detecting a target substance that is an enzyme reaction-related substance, the method including: a first step of mixing a specimen containing the target substance and a reagent to obtain a liquid sample containing hydrogen peroxide, a peroxidase, a phenol derivative, a luminescent particle and a plurality of hydrophilic polymers each having a binding functional group; a second step of generating an aggregate of the hydrophilic polymers including the luminescent particle through binding of the binding functional groups of the hydrophilic polymers based on a reaction of the hydrogen peroxide, the peroxidase and the phenol derivative, which occurs when the target substance is present in the liquid sample; and a third step of obtaining a value related to fluorescence anisotropy of the liquid sample in the second step.

The invention discloses a stem cell microcapsule-entrapped tissue adhesive, a preparation method and application, the tissue adhesive is composed of stem cell microcapsule-entrapped hydrogel and a biological adhesive, and live stem cells are entrapped in the tissue adhesive; the stem cells are selected from at least one of umbilical cord mesenchymal stem cells, bone marrow mesenchymal stem cells, adipose-derived stem cells, embryonic stem cells and induced pluripotent stem cells; the biological adhesive is formed by compounding a hydrophilic polymer and a block polymer, wherein the mass ratio of the hydrophilic polymer to the block polymer is (1: 5)-(5: 1); the transmittance of the tissue adhesive is 60-100%, the tissue adhesive strength is 20-200 kPa, and the volume swelling ratio is smaller than or equal to 50%. According to the scheme, the stem cell entrapped microcapsule and the biological adhesive are mixed to prepare the tissue adhesive, and the adhesive can be used as bio-ink to be assembled into a bionic scaffold through 3D printing or directly injected to an injured part, so that the tissue adhesive has a wide application prospect.

The present application provides an aluminum-containing substrate and its application, and a processing-free thermal plate precursor containing the same, a processing-free thermal plate and its application. The present application can effectively solve the problems of easy pollution and difficult treatment of pollution waste when a hydrophilic polymer is used as a hydrophilic layer for the aluminum-containing substrate. The hydrophilic layer obtained by using a non-polymer hydrophilic compound, which is a sugar alcohol or oligosaccharide, or a chemically modified sugar alcohol or oligosaccharide, is not easy to cause pollution, and the pollution waste is easy to be degraded by microorganisms, so it is more environmentally friendly. A processing-free thermal plate precursor uses the above aluminum-containing substrate, has excellent on-press development capability, and can improve the adhesion of the thermal layer. The processing-free thermal plate manufactured by the precursor can solve the problems of pollution of the printing plate to the fountain system of the printing machine and environmental pollution, and the plate material has excellent imaging performance, on-press development capability and UV ink printing resistance.

The application discloses a hydrophilic polymer chain interpenetrating microgel modified PVDF high water flux anti-fouling filter membrane and a preparation method and application thereof, and comprises the following steps: uniformly dissolving and mixing poly-2-acrylamide-2-methylpropane sulfonic acid (PAMPS) microgel, acrylamide (AAm) monomer, polyvinylidene fluoride (PVDF), a pore former, a crosslinking agent, an initiator and a solvent to obtain a prepolymer solution; polymerizing and crosslinking the obtained prepolymer solution to obtain a casting solution; and performing film forming treatment on the obtained casting solution after vacuum degassing to obtain the hydrophilic polymer chain interpenetrating microgel modified PVDF high water flux anti-fouling filter membrane. The modification method can significantly improve the wetting performance, water permeability and anti-fouling performance of the PVDF flat membrane, and the construction of the PDN double network hydrophilic polymer chain interpenetrating microgel particle modified PVDF enables the modified flat membrane to withstand long-time cyclic oil-water separation tests and severe chemical environment immersion tests, and the hydrophilic polymer is not easy to fall off, and the modified flat membrane has excellent hydrophilic modification stability.

The invention discloses a silicon hydrogel material as well as a preparation method and application thereof. The preparation method comprises the following steps: curing and molding 2-hydroxyethyl methacrylate (HEMA), 3-(trimethylsiloxy) propyl methacrylate (TRIS), ethylene glycol dimethacrylate (EGDMA), a silane coupling agent and a photoinitiator through a photopolymerization reaction to obtain a silicon hydrogel substrate; performing oxygen plasma treatment; preparing a PDMS hydrophobic layer; performing oxygen plasma treatment; soaking in an organic solution containing a hydrophobic initiator; and forming a hydrophilic polymer layer. The high oxygen permeability, long-acting moisture retention, low friction and protein deposition resistance of the lens are realized by constructing a'hydrophobic water locking-hydrophilic lubrication 'double-layer functional interface.

A method of stimulating a subterranean formation includes preparing an aqueous dispersion including one or more cellulosic nanoparticles. The cellulosic nanoparticles have respective surfaces functionalized with one or more hydrophilic polymers or ligands, one or more hydrophobic polymers or ligands, or a combination thereof. The method also includes pumping the aqueous dispersion into the subterranean formation.

The present application relates to the technical field of high-salinity wastewater treatment, and discloses a functionally layered integral gel solar evaporator as well as a preparation method and application thereof. The evaporator comprises, from top to bottom, a photothermal evaporation top layer, a heat storage middle layer and a water transmission bottom layer. The photothermal evaporation top layer is an oil-water dual-phase gel structure, and the oil phase containing a photothermal material is loaded in the water phase hydrophilic polymer network. The heat storage middle layer is also an oil-water dual-phase gel structure, and a phase change material is encapsulated in the oil phase droplets. The water transmission bottom layer is a single-phase hydrogel structure. The photothermal evaporation top layer, the heat storage middle layer and the water transmission bottom layer are simultaneously polymerized into an integral structure in situ in the vertical direction from a precursor solution. The present application polymerizes in situ by a one-pot method, and connects the functional layers into an integral whole without a physical interface through firm chemical bonds, so that the evaporator has excellent mechanical strength and chemical resistance, and can work stably in complex shale gas fracturing flowback fluid for a long time without delamination, swelling or degradation.

Polymer compositions comprising, inter alia, at least two hydrophilic polymers and a crosslinking reagent, biosurfaces comprising such polymer compositions, and methods of creating such biosurfaces by disposing such polymer compositions on sensor surfaces are provided. Sensor surfaces coated with such polymer compositions and biosurfaces are amenable, inter alia, to use in methods and devices for detecting, measuring, and / or quantifying one or more analytes in one or more query samples.

This invention specifically relates to a nano-adjusting agent for enhancing oil recovery and its preparation method. The adjusting agent of this invention consists of 0.1%–2.0% amphiphilic polymer, 0.1%–0.8% surfactant system, 0.5%–1.0% nanofiller, and 0.5%–3.0% retarder. The hydrophilic polymers are polyacrylamide, polyacrylic acid, and their copolymers, and the lipophilic polymer polystyrene; the surfactant system is a compound system consisting of a nonionic surfactant (fatty alcohol polyoxyethylene ether, EO number 12) and an anionic surfactant (sodium dodecylbenzenesulfonate); the nanofiller is amino-modified silica nanoparticles; and the retarder is polyether polyol and sorbitol. The results of the examples show that the adjusting agent has a high adsorption capacity on hydrophilic surfaces and a low adsorption capacity on lipophilic surfaces; it also has a high adsorption capacity on unsaturated oil core surfaces and a low adsorption capacity on saturated oil core surfaces, all indicating excellent selective adsorption properties.

This invention discloses a method for preparing a nanofiber membrane dressing, comprising the following steps: S1, preparing hydrophobic and hydrophilic polymers into solutions A and B of different concentrations, respectively; preparing a drug and a hydrophilic encapsulating material into solutions C and D of different concentrations; S2, using electrospinning to spray solution A onto a silicone oil substrate to obtain a hydrophobic layer; S3, after the hydrophobic layer reaches a certain thickness, using coaxial electrospraying to spray solutions C and D onto the hydrophobic layer to obtain a drug layer; S4, after the drug layer reaches a certain thickness, spraying with solution B to obtain a hydrophilic layer; S5, after the hydrophilic layer reaches a certain thickness, spraying again with solution A to obtain a second hydrophobic layer; S6, after the second hydrophobic layer reaches a certain thickness, spraying with solution B to obtain a second hydrophilic layer; S7, after the second hydrophilic layer reaches a certain thickness, covering it with a protective material. This dressing possesses waterproof and breathable properties as well as drug sustained-release functionality.

The present invention pertains to the field of targeted protein degradation (TPD) and target protein recruitment (TPR) providing a versatile platform for TPD, TPR and other applications dependent on cell surface ternary complex formation. In particular, the present invention provides a compound comprising a macromolecular hydrophilic polymer scaffold which is conjugated with several copies of at least two different protein binding ligands. The polymeric scaffold of the invention enables the use of small molecule ligands for target proteins of interest. Furthermore, the invention also relates to a composition comprising said polymeric scaffolds and uses thereof, e.g. for inhibiting or removing malignant or unwanted proteins; or for use in the targeted recruitment of effector cells such as CAR-T cells.

The invention relates to the technical field of waterborne polyurethane, in particular to low-swelling waterborne polyurethane and a preparation method thereof. The preparation method at least comprises the following steps: S1, mixing polyol, a curing agent and a catalyst, and carrying out polymerization reaction to generate a prepolymer; s2, adding a hydrophilic chain extender and an organic solvent into the prepolymer, and reacting to generate a hydrophilic polymer solution; s3, cooling the hydrophilic polymer solution, adding an aqueous solution of a neutralizer for a neutralization reaction, and then adding water for dispersion to obtain a mixed solution; and S4, adding an aqueous solution of a cross-linking agent into the mixed solution, carrying out a stirring reaction, and removing the organic solvent to obtain the low-swelling waterborne polyurethane. Through a specific preparation process and a specific amount of raw materials, the prepared waterborne polyurethane has excellent solvent resistance, and especially has a relatively low swelling rate in an ester solvent.

The present invention provides a soil conditioner that facilitates handling, such as transportation, by modifying water-containing soil, particularly construction sludge and other soils that are difficult to solidify, as the target soil for treatment. [Solution] A soil conditioner for modifying water-containing soil present in civil engineering works, construction works, or soil improvement work, comprising a volume-reducing agent that reduces the volume of the modified soil by reducing the amount of inorganic preparation used for the water-containing soil, wherein the volume-reducing agent is a polymer preparation, and the polymer preparation is at least one selected from the group consisting of hydrophilic polymers, water-absorbing polymers, and polymer flocculants, and the inorganic preparation comprises at least one selected from the group consisting of cement, quicklime, gypsum, paper sludge ash, and magnesium oxide.

The application provides a liquid chromatography analysis method for simultaneously detecting multiple proteins, which adopts anion liquid chromatography with non-porous resin as a stationary phase, a Tris gradient eluent phase containing Cl ‑ , the non-porous resin is bonded with a hydrophilic polymer nanolayer on the surface, the nanolayer is modified with a quaternary ammonium group, the proteins have different isoelectric points, and the pH of the eluent phase is greater than the isoelectric points of the proteins. The application can simultaneously separate and purify multiple proteins through one-time anion liquid chromatography, and can approximately achieve baseline separation. The overall method is simple, economical, efficient, and environmentally friendly for the mobile phase, and is suitable for the separation of proteins with different isoelectric points, and is particularly suitable for the detection and separation of proteins such as albumin, transferrin, retinol binding protein, beta 2 microglobulin and alpha 1 microglobulin in urine.

An oil and wastewater treatment apparatus using an ultra-hydrophilic polymer porous filter, according to one embodiment of the present disclosure, comprises: a housing formed in a three-dimensional shape extending in the plane direction and the height direction and having an open top; an ultra-hydrophilic polymer porous filter, which is formed of a porous base material having a plurality of pores formed therein or on the surface thereof, is disposed inside the housing, and is formed in a three-dimensional shape extending in the plane direction and the height direction such that an inner space is formed; and a cover disposed on the upper portion of the housing so as to cover the top of the housing, and detachably coupled to the housing, wherein the cover can have: an inlet allowing communication with the inside of the housing from the outside of the ultra-hydrophilic polymer porous filter; a first outlet allowing communication with the inside of the housing in the inner space of the ultra-hydrophilic polymer porous filter; and a second outlet allowing communication with the inside of the housing at a position spaced apart from the inlet outside the ultra-hydrophilic polymer porous filter.