19 results about "Polymer functionalization" patented technology

The invention relates to the field of high polymer materials, and discloses a high-wear-resistance elastomer sole material and a preparation method thereof.The material comprises an elastomer matrix and surface-modified boron nitride nanosheets; the elastomer matrix comprises a first dynamic network and a second dynamic network which are formed through crosslinking of dynamic covalent bonds, and the first dynamic network and the second dynamic network are based on different types of dynamic covalent bonds and have different dissociation activation energy barriers or external stimulus response conditions. The surface-modified boron nitride nanosheet and the second dynamic network form a selective interface enhancement effect; the preparation method comprises the steps of polymer functionalization, nanosheet surface modification, melt blending reaction net forming, forming and the like. The obtained elastomer sole material not only has excellent wear resistance and mechanical properties, but also can realize self-repair of graded response aiming at damages of different degrees, and the service life of the material is remarkably prolonged.

The invention discloses an ion locking fixed cyclodextrin cross-linked polymer functionalized cellulose-based textile material and a preparation method thereof, and the method comprises the following steps: cross-linking hydroxypropyl-beta-cyclodextrin (HP-beta-CD) by using 1, 2, 3, 4-butanetetracarboxylic acid (BTCA) to prepare a cross-linked polymer containing carboxyl / carboxylate groups, and carrying out cross-linking on the cross-linked polymer containing carboxyl / carboxylate groups to prepare the ion locking fixed cyclodextrin cross-linked polymer functionalized cellulose-based textile material. Polyphenols active molecules (such as luteolin) are clathrated and / or loaded; depositing the cross-linked polymer loaded with the active molecules on the surface of a cellulose-based textile base material which is subjected to cationization modification and has quaternary ammonium salt cationic groups on the surface through electrostatic interaction; divalent metal ions (preferably Ca < 2 + >) are further introduced to coordinate with carboxyl / carboxylate groups in the cross-linked polymer to form physical cross-linking points, so that locking and fixation of a functional layer are realized, and the release behavior of active molecules is regulated and controlled. The material has the comprehensive performance of stable fixation, washability, durability, breathability, comfort and maintenance and controllable release mode, and can be applied to application scenes such as skin contact textiles and dressing materials.

The invention discloses a method for coating a functional material on a U-shaped optical fiber humidity sensor through in-situ polymerization, and belongs to the technical field of optical fiber sensors. The invention relates to a method for coating a functional material on a U-shaped optical fiber humidity sensor through in-situ polymerization, which comprises the following steps: S1, mixing a polymer monomer and an initiator to start polymerization reaction, so that the polymer monomer forms a prepolymer; s2, the polymerization reaction is suspended, and the U-shaped optical fiber is dip-coated into the prepolymer, so that the U-shaped optical fiber is coated with the prepolymer; and S3, continuously carrying out polymerization reaction on the prepolymer on the U-shaped optical fiber until the polymerization reaction is complete, and forming a polymer functional material on the surface of the U-shaped optical fiber. According to the invention, the prepolymer is coated on the U-shaped optical fiber and then polymerization reaction is carried out, and a polymer functional material is formed on the surface of the U-shaped optical fiber, so that the adhesion and the distribution uniformity of the functional material are improved, the sensitivity of the U-shaped optical fiber humidity sensor is improved, and the response speed is increased.

The present invention relates a composition comprising a polyamide, a polymer having polyamide (PA) blocks and poly(tetramethylene ether) glycol (PTMG) blocks, a functionalized polyolefin, and a polyolefin, wherein the polymer (b) comprises at least 40% by weight of PTMG, with regard to the weight of the polymer (b). The present invention also relates to a method of making said composition, a kit for obtaining said composition, an article comprising or made from said composition, and a method of making said article.

The invention discloses a multi-layer polymer functionalized plant-source nano delivery system and a preparation method thereof. The multi-layer polymer functionalized plant-source nano delivery system comprises (a) a plant-source exosome-like nano vesicle core; (b) a bioactive substance entrapped in the plant-derived exosome-like nanovesicle core or combined with the plant-derived exosome-like nanovesicle core; and (c) a multilayer polymeric shell layer covering the plant-derived exosome-like nanovesicle core, the shell layer comprising at least one cationic polymer layer and at least one anionic polymer layer. According to the system, the physical and chemical stability of the PDEV carrier under simulated gastric acid and digestive enzyme and long-term storage conditions is remarkably improved, and aggregation of nano-particles and premature leakage of active substances are prevented. Through surface modification, the interaction between the nano system and intestinal epithelial cells is enhanced, and the cellular uptake efficiency and the transshipment capability of crossing the epithelial barrier are improved.

The invention relates to a developable absorbable nail for repairing and fixing a ligament around an ankle joint and a preparation method of the developable absorbable nail. The absorbable nail is obtained by combining an iodine-containing compound and a screw body through a polymer function method. On the basis of a traditional high polymer material ankle joint peripheral ligament repairing fixing nail, a high polymer material and an iodine-containing compound are combined through a polymer functionalization method, and therefore the effect of developing under X rays is achieved. The problem that the absorbable nail is difficult to develop under X rays after being implanted into a human body can be solved, so that the position of the absorbable nail can be observed more clearly, and the nail breaking condition can be observed in time.

This invention relates to a dopamine-type organic polymer-coated micene nanomaterial for nonlinear optical applications, its preparation, and its application. Utilizing the self-polymerization behavior of a porphyrin-based dopamine-type compound, a few-layer micene layer is tightly "coated" with the material after being etched and peeled away with hydrofluoric acid. The dopamine-type compound spontaneously polymerizes while interacting with the micene surface, completely isolating its terminal functional groups (-OH, =O, -F) from air. Compared to existing technologies, this invention significantly improves the environmental stability of micene by functionalizing the porphyrin core polymer to adjust the surface exposure, making its broadband nonlinear optical properties more promising for practical use. This invention inspires further development of micene to obtain specific photoelectric properties and is of great significance for the widespread practical application of micene, especially as an optoelectronic device.

The invention belongs to the technical field of radio-frequency thermal ablation liposomes, and particularly discloses a liposome with a radio-frequency thermal sensitization effect and a preparation method and application thereof, and the liposome comprises a phospholipid bilayer formed by phospholipid and a surface functionally modified by a temperature-sensitive polymer; and the temperature-sensitive polymer is distearoyl phosphatidyl ethanolamine-poly (N-isopropylacrylamide). According to the lipidosome with the radio-frequency thermal sensitization effect and the preparation method and application thereof, the prepared lipidosome has the radio-frequency thermal sensitization characteristic, non-invasive radio-frequency thermal therapy can be achieved, synergistic anti-tumor application can be achieved after treatment substances are loaded in the lipidosome, and the lipidosome has great clinical transformation prospects.

The invention relates to the technical field of high-strength materials, and discloses a high-strength material prepared from recycled PP. The high-strength material comprises the following components: recycled PP; a bio-based polymer; a supramolecular polymer; a functionalized filler; a compatibility auxiliary agent; the invention further provides a preparation process of the high-strength material prepared from the recycled PP. The cleaned recycled polypropylene is selected; primarily mixing the recycled PP and the bio-based polymer by using a high-temperature melt extrusion method; adding a supramolecular polymer and a functionalized filler to the primary mixture; adding a compatibility auxiliary agent into the secondary mixture; a dynamic cross-linking agent is added during final mixing; and the final mixture is injection-molded through a mold. By adopting the technical scheme of compounding the high-proportion recycled polypropylene and the bio-based polymer, the excellent mechanical property of the material is achieved, and the problem that the performance of a traditional material is not ideal under the occasion of high-strength requirements is solved.

The application discloses an engineered hepatocyte micro-nanorobot and a preparation method and application thereof, and the preparation method comprises the following steps: adding gold nanosphere dispersion liquid drop by drop into isopropyl alcohol, then adding 4-mercapto benzoic acid and polyacrylic acid in sequence and performing reaction, adding tetraethyl orthosilicate and ammonia water and performing reaction, obtaining Au-SiO2 nanoparticles and performing reaction with chloroplatinic acid and ascorbic acid to obtain an intermediate, and performing etching on the intermediate to obtain AP nanorobots; the enucleated hepatocytes expressing CXCR4 are co-incubated with the AP nanorobots functionalized by DSPE-Hyd-PEG-SH polymer; the engineered hepatocyte micro-nanorobot is based on the synergistic mechanism of cell metabolism regulation-nano-physical sensitization, can overcome the radiotherapy resistance of solid tumors, combines specific chemotactic characteristics with radiotherapy, can be targeted to accumulate in tumor tissues, and can effectively reverse the metabolic-driven radiotherapy resistance barrier.

The invention discloses a composite material and a preparation method thereof, a photoelectric device and a display device, and relates to the technical field of display. The composite material comprises inorganic particles and polymer functionalized MXene. When the inorganic particles are luminescent materials, the polymer functionalized MXene can improve the fluorescence quantum yield of the luminescent materials; when the inorganic particles are carrier functional materials, the polymer functionalized MXene can improve the transmission efficiency of carriers; the composite material provided by the invention has relatively high stability and photoelectric property.

The application discloses a kind of all-solid-state conductive organic polymer proton battery and preparation method thereof, the battery includes positive, negative and all-solid-state proton membrane;The positive and negative electrode both include current collector, and electrode active material layer is supported on the current collector;The electrode active material layer includes the mass ratio of (6.75~7.5):(0.75~1.5):(1~2.5) conductive organic polymer, dispersing agent and binder;The conductive organic polymer is one or more than one in nanocomposite material formed by polypyrrole, polythiophene, polyaniline, polydioxothiophene, poly-p-phenylenevinylene and carbon nanomaterial;The all-solid-state proton membrane is the polymer / inorganic hybrid membrane formed by polymer, functional inorganic nanosol and acid under room temperature condition.The proton battery of the application has the advantages of simple preparation process, safe and reliable use, excellent cycle stability and the like, and has great application potential in the field of energy storage and power battery.

The present invention relates to a process for the functionalization of a rubber polymer comprising reacting the rubber polymer with at least one source of nitrene or carbene, in the presence of a catalyst of formula TpxAg, wherein Tpx represents a hydrotris(pyrazolyl)borate ligand. This process leads to selective rubber functionalization without secondary reactions such as chain scission or cross linking and produces functionalized rubbers with improved compatibilization properties. The invention also refers to the polymer produced therefrom and to uses of said polymer.

Methods and systems for functionalizing polymers using a multistage packed bed reactor and transition metal oxide catalysts. A slurry comprising a mixture of plastic particles and a carrier fluid flows through the multistage packed bed reactor, which includes one or more catalyst beds containing metal oxide catalysts such as CuO, Cu2O, NiO, Fe2O3, MnO2, COO, CrO, VO, transition metal oxides, and combinations thereof. An applied potential between the anode and cathode of the reactor generates in-situ metal oxide catalysts, promoting the introduction of functional groups, including C—O, C═C, C═O, and OH bonds to create functionalized polymers. The functionalized polymers exhibit enhanced chemical reactivity and are suitable for various applications, including biomedical uses and membrane analytical devices. The process also allows catalyst recovery through electrodeposition, enabling sustainable and efficient plastic upcycling into high-value products.

The present application belongs to the field of polymer synthesis, and particularly relates to a marine antifouling coating prepared by hybrid copolymerization of epoxy, acrylate and elemental sulfur. The marine antifouling coating has a composition according to the molar ratio of monomer groups as follows: elemental sulfur: epoxy (binary or multi-component): acrylate (containing a silicon group): catalyst = (40-160):(20-120):(40-160):(1-5). The acrylate containing a silicon group provides excellent antifouling effect of the coating, the introduction of elemental sulfur endows the coating with antibacterial and self-repairing ability, and the binary or multi-component epoxy provides good thermal and mechanical properties of the material. The monomers of the present application are widely available, and the polymer is universal, easy to functionalize, controllable in structure and adjustable in performance. The obtained coating has intrinsic antibacterial effect, and does not need to add another antifouling agent, thereby reducing the cost while preserving the performance of the polymer, and simultaneously having the functions of self-repairing and self-polishing.

The present invention discloses a reverse amplification electrochemical biosensor based on functionalized carbonitride polymers, a preparation method and an application thereof, including: synthesis of amino-carbonitride polymers; functional modification of the amino-carbonitride polymers with thiolated OA aptamers; Th being used as an electron transfer promoter to improve the conductivity of the carbonitride polymers; modification of the surface of a glassy carbon electrode with the functionalized amino-carbonitride polymers; functional modification of the amino-carbonitride polymers with thiolated ssDNA; complementary pairing of the thiolated ssDNA-functionalized amino-carbonitride polymers and the thiolated OA aptamer-functionalized amino-carbonitride polymers modified with Th; DPV detection of OA by a working electrode. The test results show that the sensor system is simple, effective, low-cost and highly sensitive. Based on the diversity of aptamers and single-stranded DNAs, the reverse amplification electrochemical biosensor provides a general detection method for the detection of toxins, biomolecules and organic molecules.

Compositions comprising a polymer-functionalized mixed reticular material such as a covalent organic framework (COF), as well as making and using such compositions are described herein.

Polymer functionalized substrates, methods of making polymer functionalized substrate, and uses of polymer functionalized substrates. A polymer functionalized substrate comprises a plurality of polymer groups (which may be referred to as polymer brushes), disposed on a surface of a substrate. In various examples, a polymer functionalized substrate is made by irradiating a substrate with monomer(s), photocatalyst(s), and chain transfer agent(s) disposed thereon, where the polymer groups are formed. In various examples, a method comprises a surface-initiated hydrogen atom transfer (HAT)-reversible addition-fragmentation chain transfer (RAFT) polymerization. In various examples, a polymer functionalized substrate is configured or suitable for use as lubricant, a viscosity modifier, or a filtration membrane. In various examples, an article of manufacture, such as, for example, a medical device, comprises a polymer functionalized substrate. In various examples, an article of manufacture exhibits a desirable property, such as, for example, antimicrobial or antifouling activity, wettability, hydrophobicity, or scratch / abrasion resistance.

The present invention relates to polyamides, polymers having polyamide (PA) blocks and polyethylene glycol (PEG) blocks, functionalized polyolefins, and compositions comprising polyolefins, wherein the weight ratio of (a+b) / (c+d) is less than 1. The present invention also relates to methods for producing the compositions, kits for obtaining the compositions, articles comprising or made from the compositions, and methods for producing the articles.