43 results about "Active polymer" patented technology

A temperature sensing apparatus having an electrode with an associated redox-active polymer. The electrode is connected to circuitry which applies an interrogating electrical potential waveform. The circuitry measures an electrical current resulting from application of the electrical potential waveform. The measured electrical current is processed to determine the temperature of a solution contacting the electrode. The apparatus may further comprise an analyte sensing redox-active polymer for sensing the amount of an analyte in the solution.

A test device for monitoring sterilization using a steam sterilant in a chamber is provided. The test device includes a test stack. The test stack includes an entrance layer including an entrance hole. The test stack further includes a sensor layer spaced apart from the entrance layer. The sensor layer includes a pair of electrodes disposed on the sensor layer. The test stack further includes a sensor coating disposed on a portion of the sensor layer and including an electrically active polymer. The test stack further includes a channel layer disposed between the entrance layer and the sensor layer. The channel layer includes an internal channel. The internal channel is configured to allow a flow of steam sterilant from the entrance hole to the sensor coating.

The present disclosure provides for organic battery electrodes and dual-ion batteries. In an aspect, the present disclosure provides for electrodes (e.g., cathodes, anodes) that include a carbon fiber sheet that includes a non-conjugated redox-active polymer(s) (RAP) (e.g., a layer of the non-conjugated redox-active polymers). The electrodes can be used in dual-ion batteries. In an aspect, the dual-ion batteries can operate at lower temperatures (e.g., about 0° or less) than other battery types such as rocking-chair batteries.

The present invention relates to the electrochemical detection of an analyte by capacitance spectroscopy using a redox active polymer-coated electrode such as a polyaniline-coated electrode.

Living polymers prepared by organolithium initiated polymerization of conjugated diene monomer or copolymerization of conjugated diene and vinyl aromatic monomers are efficiently coupled by using a functionalized siloxane oligomer blend as coupling agent. Diene rubber compositions partially coupled with functionalized siloxane oligomer blends exhibit broad molecular weight distribution, increased throughput in their industrial processing, as well as faster dissolution in recipes to produce rubber toughened plastics such as HIPS and ABS. Radial styrene-butadiene block copolymers as well as their corresponding hydrogenated block copolymers achieved excellent thermoplastic elastomer performance and can be used for hotmelt adhesives, sealants, asphalt modification, footwear; technical compounds, thermoplastic gels, films or elastic fibers.

The present application relates to the field of polymer manufacturing, and particularly relates to a long-chain branched modification method of rare earth isoprene rubber and / or butadiene rubber, comprising the following steps: S1. performing solution polymerization of isoprene and / or butadiene and isoprene in a non-polar solvent in the presence of a rare earth catalyst to obtain a glue solution containing active polymer molecular chains; S2. when the conversion rate of the polymerization reaction reaches 95% or more, adding a compound branched modifier to the glue solution to perform a branched reaction; wherein the compound branched modifier comprises at least one of a chloride and an alkyl halide and at least one selected from ether compounds and tertiary amine compounds. The branched modifier used in the present application has a strong branching effect, and has good solubility so as to achieve uniform mixing at a molecular level in the glue solution, significantly alleviates the gel side reaction, reduces the gel content, narrows the molecular weight distribution, significantly improves the raw rubber performance, and improves the product uniformity.

A test device for monitoring sterilization using a steam sterilant in a chamber is provided. The test device includes a test stack. The test stack includes an entrance layer including an entrance hole. The test stack further includes a sensor layer spaced apart from the entrance layer. The sensor layer includes at least one pair of electrodes disposed on the sensor layer. The test stack further includes at least one sensor coating disposed on at least one portion of the sensor layer and including an electrically active polymer. The test stack further includes an intermediate layer disposed between the entrance layer and the sensor layer. The intermediate layer is disposed in fluidically connects the entrance hole and the at least one sensor coating. The intermediate layer is configured to allow a flow of the steam sterilant received from the entrance hole to the at least one sensor coating.

The application provides an active polymer microgel and a preparation method and application thereof. The active polymer microgel is prepared by emulsion polymerization with N,N-dimethyl acrylamide, a hydroxymethyl amide monomer, a methacrylic acid ester monomer and an emulsifier as raw materials under the action of a chain extender and an initiator. The inventor controls a large number of active groups in the active polymer microgel to provide crosslinking sites, improves the crosslinking density of subsequent plugging gels, and makes the plugging gels have a three-dimensional network structure after solidification, so that the crosslinking speed and crosslinking quality are improved, and the technical requirements of the plugging gels applied to deep high-temperature leakage layers on crosslinking agents are met.

The application relates to the technical field of water treatment, in particular to a photocatalyst, a preparation method and application thereof. First, a copolymer is obtained by taking acrylonitrile, acrylic acid and vinyl imidazole as monomers, then bismuth ion solution and silver ion solution are sequentially added to carry out a coordination reaction; then a surfactant and sodium tungstate are added to carry out a hydrothermal reaction; and finally post-treatment is carried out to obtain an organic polymer modified bismuth-silver doped photocatalyst. The application utilizes a copolymer containing carboxyl and imidazole groups as a ligand, uniformly anchors bismuth ions and silver ions through coordination, realizes uniform silver doping, avoids agglomeration, effectively widens the light response range through a small amount of silver doping, suppresses carrier recombination, and improves photocatalytic activity. The synergistic effect of the polymer and the surfactant induces the formation of a nanosheet structure, increases the specific surface area and active sites. The prepared photocatalyst has a high degradation rate for antibiotic wastewater such as tetracycline, has good cycle stability, and the degradation rate still remains above 85% after 5 cycles.

An actuator mechanism having body, at least one actuator made of an electro-active polymer material which changes form depending on the electrical energy so that it triggers the body, at least two reinforcers which allow the actuator to change form are positioned on the actuator such that they remain opposite to each other and are connected to the actuator by clamping, thus transmitting movement to the body.

A method of producing a polymeric membrane for isolating a protein-of-interest from a protein mixture, the method comprising: immersing a membrane casting mixture into a first immersion fluid at a first immersion temperature and for a first immersion period to form an intermediate polymeric phase; and sequentially, immersing the intermediate polymeric phase into a second immersion fluid at a second immersion temperature and for a second immersion period to form the polymeric membrane, wherein the membrane casting mixture comprises a polymer composition dissolved in a casting liquid, the polymer composition comprising a base polymer and an active polymer, and wherein the first immersion fluid comprises a solvent and / or a mixture of solvents and / or a mixture of a non-solvent and a solvent, and wherein the second immersion fluid comprises a non-solvent and / or a mixture of non-solvents and / or a mixture of a non-solvent and a solvent, wherein the second immersion fluid has a greater %v / v of non-solvent than the first immersion fluid.

High concentration polymer slurries contain up to 70 weight percent active polymer in a hydrophobic solvent base treated with suspending agents, dispersants, and thinning agents. The slurries are prepared by mixing a solid polymer with an invert polymer emulsion without the need for specialized field equipment. These slurries provide increased polymer concentration and improved dispersibility of solid polymer or other hydrophilic colloids. The resulting formulations offer technical advantages, including enhanced efficiency, ease of handling, and cost-effectiveness.

The utility model discloses a kind of pumpless electric drive liquid cooling battery box devices, including integrally die-casting box, its inside is divided into battery cabin and cooling liquid cabin by partition, and its outer bottom is attached to set up the liquid cooling plate of inner flow channel;Inlet section and outlet section of flow channel are respectively corresponding to set up inlet flexible check valve and outlet flexible check valve, and the inner wall of flow channel between two valves is attached with electroactive polymer;Electroactive polymer is connected with alternating current power supply, generates radial periodic deformation drive cooling liquid from inlet flexible check valve to outlet flexible check valve directional flow. The utility model drives traditional pump by electroactive polymer deformation drive belt, and set up flexible check valve to prevent backflow, effectively reduce the power consumption of battery box liquid cooling system.

The application discloses the technical field of polymer synthesis, and particularly discloses a hydrogenation method of a polymer, which comprises the following steps: obtaining an active polymer by using an anionic polymerization method; adding a terminating agent into a polymerization system and then performing hydrogenation reaction on the terminating reaction system to obtain a hydrogenated polymer. The application finds that the active polymer is terminated by the innovative terminating agent, which can effectively terminate the active molecular chain, maintain the activity of the catalyst in the hydrogenation process, improve the hydrogenation efficiency, and prevent the polymer from being degraded and broken in the high-temperature and high-pressure hydrogenation process.

A method, an electrochemical sensor and a system for selective detection of infections. The method detects a concentration of nicotinamide adenine dinucleotide, NADH, from a bacterial culture through a cyclic voltammetry or chronoamperometry applied to an electrochemically active polymer. Therefore, prokaryotic cells can be detected while eukaryotic cells remain undetected. The infections can include bacterial infections and fungi or yeasts microbial infections.

The invention relates to the field of medicine, namely to biosensor analytical devices, and can be used for quantitative assessment of glucose content in body fluids, namely blood, plasma and serum The device for quantitative assessment of glucose content in body fluids containing a graphite screen printed electrode (1), a surface of which is modified by a hybrid composite (2) having inclusions of glucose oxidase enzyme (4), and the hybrid composite (2) contains an organosilicon matrix (3) made of tetraethoxysilane, and placed in said matrix (3) inclusions of single-walled carbon nanotubes (5), inclusions of a redox-active polymer (6) based on chitosan covalently bound to a Nile blue mediator. The technical effect of the invention is an increase in the operating time of the device for quantitative assessment of glucose content in body fluids without replacing the hybrid composite while maintaining high sensitivity to glucose content in body fluids.

Methoxy polyethylene glycol for use as a medicament, in particular in skin healing, wound healing and treatment of a microbial infection. A method for treating a medical device and / or implant to reduce or eliminate microbial contamination comprises applying a liquid formulation comprising methoxy polyethylene glycol. This invention relates to the novel discovery that methoxy polyethylene glycol, an inactive polymer with no known pharmacological effect, was able to come between microbes and a surface, removing the microbes or releasing the attachment or adherence of the microbes to the surface and thereby improving wound healing significantly, eliminating infections and colonies of microbes.

This disclosure relates to a method for preparing peptide nanoparticle formulations, and more particularly peptide nanoparticle suspensions, using low-shear milling. More specifically, this disclosure relates to a method for preparing peptide nanoparticle suspensions by applying low-frequency acoustic energy to a mixture comprising a peptide, an aqueous dispersion medium comprising a surfactant and optionally a surfactant, and a milling medium until the peptide is milled to nanoparticle size. Stable peptide nanoparticle suspensions prepared by said method are also described.

Provided herein are compositions of phage combinations bound to surface-active polymer substrates. The polymer substrates can be incorporated into personal care products. Also provided herein are methods for binding the phage combinations to surface-active polymer substrates. Methods for selecting the phage combinations are also described. Also provided are methods for using the phage combination compositions to treat one or more skin conditions.

The invention provides a preparation method and application of high-activity polymer polyol, and the preparation method comprises the following steps: in the presence of an initiator and a chain transfer agent, polymerizing a macromonomer and an olefinic unsaturated monomer in high-activity polyether polyol, and carrying out devolatilization treatment to obtain the high-activity polymer polyol, according to the product obtained by the preparation method, polymer particles contain a multi-foam structure, and the prepared polyurethane foam has the characteristics of good compression performance, good bearing capacity and low density.

This invention discloses an antistatic and anti-corrosion coating material for the surface of integrated fuel tanks in aircraft and its preparation method. The antistatic and anti-corrosion coating material comprises the following components in parts by weight: 20-50 parts pigments and fillers, 30-70 parts epoxy resin, 5-20 parts conductive fillers, 0.5-1 parts active polymer dispersant, 1-2 parts leveling agent, 0.5-2.5 parts silane coupling agent, 20-50 parts curing agent, and 50-100 parts mixed solvent. Compared to traditional antistatic coatings, this antistatic and anti-corrosion coating material for integrated fuel tanks in aircraft possesses better conductivity without reducing the anti-corrosion performance of the coating film. It is suitable for the surface of integrated fuel tanks in aircraft, maintaining good corrosion resistance and effectively dissipating static charge, providing an innovative integrated antistatic and anti-corrosion solution for aircraft fuel tanks.

A bioink formulation for digital light processing bioprinting comprising a mixture of a biocompatible cleavable polymer precursor, a biocompatible non-cleavable polymer precursor, and a photoinitiator is described. Three-dimensional (3D) objects prepared using these bioink formulations are also described. In addition, a method of 3D bioprinting is described. The method includes providing a bioink formulation in a 3D bioprinter vat; repeatedly photoactivating the biocompatible photoactive polymer precursors in the 3D bioprinter vat on a build plate immersed in the vat to form a 3D bioprinted object comprising polymers having a series of predefined shapes across the vertical direction based on a set of sliced images; and treating the 3D bioprinted object with an agent that cleaves chemical bonds within the cleavable polymer.

The present disclosure is directed to the field of electroactive polymer transducers, actuators, sensors and generators. In particular, the disclosure pertains to a transducer element comprising an elastic body, a flexible film and an electrode attached to the flexible film. The electrode being in a corrugated state having elevations and depressions, and wherein the corrugated state is provided by a compression force of the elastic body or the flexible film. Moreover the present disclosure is directed to manufacturing of such transducer element and to a transducer with such transducer element.

This application belongs to the field of lithium battery separator technology, and more specifically, relates to a polymer blend separator, its preparation method, and its application. The polymer blend separator provided in this application is prepared by a wet process using an electrochemically active polymer, polyethylene, and a pore-forming agent. Introducing the electrochemically active polymer enhances the electrolyte affinity of the separator, improves its ionic conductivity, promotes lithium-ion transport, increases the lithium-ion transference number, and improves the electrochemical performance of the battery while effectively inhibiting lithium dendrite growth and enhancing battery safety. Furthermore, the melting point of the electrochemically active polymer is lower than that of polyethylene but higher than the heat-setting temperature in the wet process. When the internal temperature of the battery rises, the electrochemically active polymer in the separator can melt and close the pores before the polyethylene shrinks, effectively preventing electrochemical reactions, reducing heat generation, preventing the spread of thermal runaway, and further improving battery safety.

The application provides a metallocene polypropylene catalyst and a preparation method thereof. The preparation method of the metallocene polypropylene catalyst comprises the following steps: 1) performing a thermal activation treatment on a carrier to obtain an activated carrier; 2) loading a first part of a cocatalyst on at least part of the surface of the activated carrier to obtain a first intermediate product; 3) after a second part of the cocatalyst is subjected to a first reaction with a metallocene compound, a pyrrole compound is added to generate a second reaction to obtain a catalyst precursor; and 4) the first intermediate product is subjected to a third reaction with the catalyst precursor to obtain the metallocene polypropylene catalyst; wherein the pyrrole compound comprises an ester group. The preparation method of the metallocene polypropylene catalyst of the application is simple in operation, uses less chemical reagents, and the prepared metallocene polypropylene catalyst has excellent activity, and the polymer has a wider molecular weight distribution.

The invention relates to the field of polymer oil-displacing agents, and discloses a surface active polymer as well as a preparation method and application thereof. The surface active polymer comprises a structural unit A as shown in a formula (1), a structural unit B as shown in a formula (2) and a structural unit C as shown in a formula (3), M is H or an alkali metal element, R1, R2, R3, R4, R5 and R6 are respectively alkyl groups or H and R7 are C10-C17 alkyl groups, and R1, R2, R3, R4, R5 and R6 are respectively alkyl groups or C10-C17 alkyl groups. The weight ratio of the structural unit A to the structural unit B to the structural unit C in the surface active polymer is (1-35): (1-10): 1. The surface active polymer provided by the invention has good surface activity, water medium thickening capability and high-temperature and high-salt resistance.

A method of producing a polymeric membrane for isolating a protein-of-interest from a protein mixture, the method comprising: immersing a membrane casting mixture into a first immersion fluid at a first immersion temperature and for a first immersion period to form an intermediate polymeric phase; and sequentially, immersing the intermediate polymeric phase into a second immersion fluid at a second immersion temperature and for a second immersion period to form the polymeric membrane, wherein the membrane casting mixture comprises a polymer composition dissolved in a casting liquid, the polymer composition comprising a base polymer and an active polymer comprising an N-isopropylacrylamide (NIPAM)-itaconic acid co-polymer (NIA), and wherein the first immersion fluid comprises a solvent and / or a mixture of solvents and / or a mixture of a non-solvent and a solvent, and wherein the second immersion fluid comprises a non-solvent and / or a mixture of non-solvents and / or a mixture of a non-solvent and a solvent, wherein the second immersion fluid has a greater %v / v of non-solvent than the first immersion fluid.

The present disclosure is directed to the field of electroactive polymer transducers, actuators, sensors and generators. In particular, the disclosure pertains to a transducer element comprising an elastic body, a flexible film and an electrode attached to the flexible film. The electrode being in a corrugated state having elevations and depressions, and wherein the corrugated state is provided by a compression force of the elastic body or the flexible film. Moreover the present disclosure is directed to manufacturing of such transducer element and to a transducer with such transducer element.