16 results about "Cyclodextrin polymer" patented technology

The invention discloses a zinc-bromine flow battery multifunctional bipolar plate and a preparation method and application thereof.The method comprises the steps that polyaniline is added into a cetyltrimethylammonium bromide ethanol solution, after stirring and ultrasonic treatment, a mixed solution is obtained and sprayed to the positive electrode side of a pretreated polypropylene bipolar plate, and after drying, the zinc-bromine flow battery multifunctional bipolar plate is obtained; the polyaniline modified polypropylene bipolar plate is obtained; the preparation method comprises the following steps: dissolving beta-cyclodextrin in a NaOH solution, adding epoxy chloropropane, stirring for reaction, washing to be neutral, drying, grinding and sieving to obtain a cyclodextrin polymer, dispersing the cyclodextrin polymer in a Nafion solution to obtain a cyclodextrin polymer solution, spraying the cyclodextrin polymer solution on the negative electrode side of a polyaniline modified polypropylene bipolar plate, and drying to obtain the multifunctional bipolar plate of the zinc-bromine flow battery. Polyaniline is loaded on the positive electrode side of the bipolar plate to reduce a bromine permeation source and bromine reaction activation energy, a cyclodextrin polymer Nafion solution is used for modifying and stabilizing the pH value of an electrolyte on the negative electrode side, uniform and compact deposition of zinc is promoted, formation of sharp dendrites is reduced, and the electrochemical performance and long-term stability of the battery are improved.

This invention discloses a cross-linked cyclodextrin polymer, its preparation method, and its applications, belonging to the field of compound synthesis and separation enrichment technology. This invention employs a Sonogashira coupling reaction to react α, β, and γ cyclodextrins with 2-, 3-, or 6-position fully iodine-substituted cyclodextrins with polyalkynyl groups, respectively, to obtain cross-linked cyclodextrin polymers with large specific surface areas and numerous cyclodextrin cavities. These polymers exhibit good separation effects for organic dyes, small organic molecule pollutants, and harmful components in cigarette smoke.

The application discloses a salicylic acid-cyclodextrin-amino acid ternary inclusion compound and a preparation method thereof. The salicylic acid-cyclodextrin-amino acid ternary inclusion compound is formed by non-covalent bond interaction of salicylic acid, amino acid and cyclodextrin derivatives, wherein the cyclodextrin derivative is a cross-linked beta-cyclodextrin polymer, wherein the salicylic acid molecules are included in the cavity of the cross-linked beta-cyclodextrin polymer, and meanwhile, the guanidino group or carboxyl group of the amino acid side chain interacts with the hydroxyl group outside the cross-linked beta-cyclodextrin polymer or the exposed part of the salicylic acid molecules after inclusion. The application uses the cross-linked beta-cyclodextrin polymer and introduces arginine as a synergist to construct a salicylic acid-cross-linked beta-cyclodextrin polymer-arginine ternary inclusion compound, and through charge neutralization and hydrogen bond network synergistic effect, the inclusion efficiency is significantly improved, and the water solubility of salicylic acid is improved.

The application discloses a preparation method and application of a cyclodextrin polymer composite adsorbing material. The preparation method of the adsorbing material comprises the following steps: under the action of NaH, β-cyclodextrin is subjected to hydroxyl activation, then maleic anhydride is slowly added to carry out a reaction, and thus a β-cyclodextrin-dibutenedioic acid ester derivative is prepared; under the action of an initiator and a crosslinking agent, the β-cyclodextrin-dibutenedioic acid ester, a double-bond-containing monomer and a functional monomer are subjected to a polymerization reaction, and then are washed and dried, so as to obtain the cyclodextrin polymer composite adsorbing material; the functional monomer is silanized montmorillonite or Fe3O4-dibutenedioic acid ester; and the double-bond-containing monomer is one of acrylic acid, acrylamide and styrene. The cyclodextrin polymer composite adsorbing material with multiple action sites is prepared by using β-cyclodextrin and the functional monomer as raw materials, and by utilizing the structural advantages of different compounds; the preparation conditions of the obtained composite material are mild, the post-treatment is simple, and the composite material has high adsorbing efficiency as an adsorbent.

The application discloses a method for improving the performance of a resistance reducing agent based on cyclodextrin solubilization modification and application, and belongs to the technical field of fracturing fluids, and comprises the following steps: S1, mixing a hydrophobic associated polymer dry powder and cyclodextrin to prepare a mixed liquid; S2, stirring the mixed liquid, and testing the particle size in the mixed liquid at the same interval of time; and ending the stirring after the particle size is reduced to a stable size, so as to obtain a hydrophobic associated polymer solution. The cyclodextrin polymer not only has a high molecular effect, but also retains the inclusion ability of the cavity of the cyclodextrin, and has good inclusion performance in the case that the guest molecules are large. The hydrophobic associated polymer is modified through host-guest inclusion technology, the solubility of the hydrophobic associated polymer is improved on the basis of ensuring the resistance reducing effect, and the prepared hydrophobic associated polymer resistance reducing agent has the advantages of fast dissolution, good shear resistance and good resistance reducing effect.

The invention discloses a bio-based super absorbent for a dispersible sanitary towel and a preparation process of the bio-based super absorbent. The water absorbent is prepared by compounding functional polysaccharides such as sodium alginate, carboxymethylated pea protein, octenyl succinic starch ester and gellan gum with structured auxiliaries such as porous cyclodextrin polymer, nano kaolin, calcium hydrogen citrate and tartaric acid. The preparation process creatively adopts a pre-assembly dry method compounding and fluidized bed trigger type synchronous crosslinking-pore forming integrated technology, and the core is that calcium hydrogen citrate is utilized to synchronously generate CO and Ca in situ under the triggering of acid, and an ideal structure with gradient crosslinking core-shell and through open micropores is constructed by a one-step method. And the obtained product has the advantages of high water absorption rate, high multiplying power and strong pressure maintaining capability, and can be completely biodegraded.

The invention relates to the technical field of biomedical materials, and discloses an injectable biocompatible hydrogel based on dynamic supramolecular assembly, and the hydrogel comprises the following components by weight: 3.0-5.0% of zinc oxide nanocrystalline regenerated cellulose; 3.0%-5.0% of chondroitin sulfate; 1.5% to 2.5% of recombinant human source collagen; 1%-2% of beta-sodium glycerophosphate; 0.7%-1% of a cyclodextrin polymer; 0.4%-0.7% of an adamantane derivative; 0.3% to 0.5% of PEI-DNA nano particles; 0.1% to 0.3% of calcium citrate; 0.1% to 0.2% of sodium alginate microspheres; 0.15%-0.2% of a pH buffer agent; the preparation method comprises the following steps: taking collagen as a raw material, taking sterile deionized water and normal saline as residual components, and adjusting the components through subject-object supramolecular interaction, ionic crosslinking, collagen thermosensitive assembly and a step-by-step mixing process and structure, so that the prepared hydrogel has the advantages of dynamic reversible crosslinking, shear thinning and self-healing synergy, high biocompatibility and controllable degradation rate.

Methods and kits are provided for an assay for detecting and quantifying a PFAS compound or a mixture of PFAS compounds in a sample. The method includes the steps of providing a solid cyclodextrin polymer adsorbed on or linked to a substrate, contacting an indicator molecule with the solid cyclodextrin polymer or the cyclodextrin adsorbed on or covalently linked to the substrate to form a complex, contacting the complex with the sample and measuring a parameter of the indicator molecule. The parameter is correlated with displacement of the indicator molecule from the solid polymerized cyclodextrin or the cyclodextrin adsorbed on or covalently linked to the substrate upon binding of the PFAS compound to the cyclodextrin, thereby indicating presence and quantity of the PFAS compound or the mixture of PFAS compounds in the sample.

The invention belongs to the technical field of nano-drugs, and particularly relates to an ultrasonic responsive apoptosis bionic targeting nano-carrier delivery material and a preparation method thereof. According to the invention, a beta-cyclodextrin polymer (PCD) is used as a core skeleton, and phosphorylserine (PS) is modified through a phosphate bond so as to enhance the targeting ability; pFH (perfluorohexane) is entrapped as an ultrasonic response core under a low-temperature condition by utilizing interaction of a subject and an object; liposome (soya bean lecithin and cholesterol) is used for outer layer coating, so that the in-vivo stability and the circulation half-life period of the system are remarkably improved, and the breakthrough of the PCD-PS system from local administration to systemic administration is realized for the first time; the system has excellent ultrasonic responsiveness, and can be accurately triggered at a targeted part and release contents; meanwhile, the apoptotic cell imitating design endows the system with active targeting property, and the dual-coating structure ensures the stability of in-vivo circulation, so that the synergistic interaction of stable circulation, active targeting and ultrasonic triggering is realized.

The application provides a synergistic supramolecular inclusion polymer oil displacement system and a preparation method and application thereof. The synergistic supramolecular inclusion polymer oil displacement system comprises the following raw materials: a host polymer, a guest amphiphilic polymer, an amphoteric surfactant and mineralized water; the host polymer is a beta-cyclodextrin polymer; the guest amphiphilic polymer is a salt-tolerant adamantyl amphiphilic polymer; and the amphoteric surfactant is selected from betaine type amphoteric surfactants. The application takes specific types of host polymers, specific types of guest amphiphilic polymers and specific types of surfactants as building units, forms a synergistic supramolecular inclusion polymer oil displacement system through host-guest inclusion and electrostatic interaction and other non-covalent bond forces, can reduce the polymer use concentration and cost, and has the performances of high viscosity and ultra-low interfacial tension, can effectively improve the oil recovery ratio by improving the sweep volume and oil washing efficiency.

The invention discloses a perfluorinated compound detection method based on a cyclodextrin polymer sensing array and a portable device, and relates to the field of environmental pollutant detection. The method comprises the following steps: synthesizing a cyclodextrin polymer, self-assembling the cyclodextrin polymer and a fluorescent dye, screening out four probes to construct a sensing array, and measuring the response conditions of the sensing array and six perfluorinated compounds to construct a fingerprint spectrum, so as to distinguish the categories of the perfluorinated compounds in a sample to be detected. A standard curve is also established to quantitatively measure the concentration of the perfluorinated compound, and the detection effect on a mixed sample and an actual water sample is good; and combining with a micro-fluidic chip to construct the portable perfluorine screening device. The detection method disclosed by the invention is rapid, sensitive, low in cost, portable and suitable for detecting the perfluorinated compounds in various environmental samples.

The present invention relates to a composition comprising: a beta-cyclodextrin polymer (a); and at least one compound (b) selected from the group consisting of mycolactones and derivatives thereof.

The present disclosure relates to a hydrogel composition based on anionic cyclodextrin polymers and chitosan for use in the treatment of articular disorders. In particular, the hydrogel combines a pharmacological action, in particular an analgesic action, with a visco-supplementation (a lubricating effect).

The invention discloses a structured liquid drop and a preparation method and application thereof, the structured liquid drop comprises an interfacial film and a first solution, the first solution is placed in a cavity enclosed by the interfacial film, the structured liquid drop is dispersed in a second solution, and the second solution and the first solution are immiscible; and when the structured liquid drop is extruded by external force smaller than a threshold value, the shape of the structured liquid drop is changed. According to the preparation method disclosed by the invention, the water-soluble star-shaped beta-cyclodextrin polymer with a clear structure is taken as an assembly element, no high-molecular ligand is needed, and the interface assembly of the star-shaped beta-cyclodextrin polymer is induced by directly utilizing the interaction between the star-shaped beta-cyclodextrin polymer and the oil-phase solvent; an assembly body with excellent mechanical strength is constructed on a water-oil interface in situ, and preparation of the structured liquid drops is realized by combining external field action.

The application belongs to the technical field of fish live transportation, and particularly relates to a embedding type fry live transportation anti-stress agent and a preparation method and application thereof. The preparation method comprises the following steps: S1, mixing gelatinized starch and an acrylic acid solution, then adding a eugenol solution and / or a vitamin C solution, and uniformly mixing to obtain a solution A; S2, under an inert atmosphere, adding a saturated aqueous solution of beta-cyclodextrin to the solution A, and uniformly mixing to obtain a solution B; S3, irradiating the solution B, and after the irradiation is completed, standing overnight, then performing suction filtration, washing, and drying to obtain a complex particle of beta-cyclodextrin embedding eugenol and / or vitamin C. The beta-cyclodextrin is reacted with starch and acrylic acid to generate a beta-cyclodextrin polymer embedding the efficacy component eugenol or vitamin C, which can improve the stability and solubility of the efficacy component, delay the release speed of the efficacy component, make the efficacy component play a long-acting role, and then be conducive to reducing the stress response of fry transportation and improving the survival rate.

The invention belongs to the technical field of environmental functional materials and water treatment, and particularly relates to a material for rapidly removing arsenic in water based on a zero-valent iron modified high-swelling cyclodextrin polymer matrix as well as a preparation method and application of the material. Comprising a high-swelling cyclodextrin polymer matrix formed by an esterification reaction of cyclodextrin and ethylenediamine tetraacetic acid dianhydride, the swelling degree of the high-swelling cyclodextrin polymer matrix is greater than or equal to 560%, the specific surface area after swelling is greater than or equal to 480 m < 2 > / g, and the average pore size is 2-50 nm; the dimethylaminoethyl methacrylate chain segment is grafted on the high-swelling cyclodextrin polymer matrix, and the grafting rate is 20-40%, so that the Zeta potential on the surface of the high-swelling cyclodextrin polymer matrix is + 15-+ 25 mV when the pH value is equal to 7; the zero-valent iron nanoparticles are loaded in the high-swelling cyclodextrin polymer matrix in situ, the particle size is 10-100 nm, the iron content is 5-55 wt%, and an innovative solution is provided for solving the problems that in the current water treatment technology, the adsorption rate is low, the pH application range is narrow, and the function is single.