8 results about "Polymer functionalization" patented technology

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 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 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 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.

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.