80 results about "Polystyrenesulfonic acid" patented technology

The invention discloses a single-ion conductor polymer, a ternary composite binder solution, high-solid-content sulfide electrolyte slurry and a wet film forming method and application thereof, and belongs to the technical field of all-solid-state lithium batteries. The key technical problems in the wet membrane preparation of the sulfide electrolyte are solved through an innovative solvent-binder synergistic system, and the method specifically comprises the steps that 1, through the synergistic effect of a non-polar solvent and a weak-polar solvent, low-viscosity coating of high-solid-content slurry is achieved while the chemical stability of the sulfide electrolyte is guaranteed; 2, a poly (lithium styrenesulfonate-butyl acrylate), styrene butadiene rubber and polyisobutene ternary composite binder is designed, a lithium ion transmission channel is provided through a lithium sulfonate group, a benzene ring structure in the styrene butadiene rubber enhances the mechanical strength, long-chain alkane in the polyisobutene improves the interface adhesive force, and the mechanical strength is improved; the three components cooperate to realize balance of mechanical and electrochemical properties of the electrolyte membrane, so that the prepared electrolyte membrane has low porosity, high ionic conductivity and mechanical strength.

The invention discloses an artificial SEI material and a preparation method thereof, an artificial SEI film and an artificial SEI film modified negative electrode. The artificial SEI material is an organic polymer brush (CNF-g-PSSX) prepared by grafting cellulose nanofibers with polystyrene sulfonate. The polymer brush is of a crystal structure and has a firm framework; and the side chain of polystyrene sulfonate has rich-SO3 functional groups which are matched with cations in sulfonate, so that a rapid ion transmission channel is provided, high-current-density circulation can be realized, and good interface contact is ensured. Due to a special molecular topological structure and a multi-component synergistic effect, when the organic polymer brush forms an artificial SEI film, high mechanical strength, high ionic conductivity and low interface impedance can be obtained at the same time, and through strong electrostatic repulsion between a negatively charged-SO3 group and the surface of a negatively charged lithium dendrite tip, the electrochemical performance of the artificial SEI film is improved. An obvious inhibition effect is shown on the continuous growth of dendritic crystals.

The invention provides a diaphragm and a preparation method thereof and a lithium ion battery, the diaphragm comprises a base membrane layer and a composite functional layer, the composite functional layer comprises hydrophobic SiO2 aerogel modified by a hydrophobic agent, a conductive ion polymer and a solid electrolyte, and the composite functional layer respectively accounts for 3-12wt%, 0.5-1.0 wt% and 0.5-1.5 wt% of the total mass of the diaphragm; the hydrophobic agent comprises trimethylchlorosilane, hexamethyldisilazane, perfluorooctyltriethoxysilane, polyvinylidene fluoride, polydimethylsiloxane and the like, the conductive ionic polymer comprises polyvinylpyrrolidone, lithium polymethacrylate, lithium polystyrene sulfonate, polyacrylamide and the like, and the solid electrolyte comprises lithium lanthanum titanium oxide, lithium lanthanum zirconium oxide, lithium lanthanum zirconium tantalum oxide and the like. The wettability is improved by the high porosity of the hydrophobic SiO2 aerogel, the stability and strong conductivity of a physical conductive network of the solid electrolyte and the ion affinity and amphoteric binding capacity of the conductive ion polymer are optimized, the electrochemical performance and thermal stability of the interface are optimized, and comprehensive optimization of the thermal-electric-interface performance of the diaphragm is realized through combination.

Mobile or stationary air filter (L) or room fan (RL) according to Figure 1, comprising an outer wall (5), a (2) for generating an airflow (3) which is guided through an air filter material (1.1), an air inlet (2.1) and an air outlet (2.2), wherein the air filter material (1.1) contains poly(styrenesulfonic acid) (sulfonic acid biocide) (1.3) cross-linked with divinylbenzene and / or an acidic salt (1.3.1) (sulfonic acid biocide salt) of the sulfonic acid biocide (1.3) with biocidal cations, wherein the sulfonic acid biocide (1.3) and / or sulfonic acid biocide salt (1.3.1)(i) are positively and / or materially bonded to and / or in inert carriers and, in the fixed state, are in direct contact with carrier materials (1.1.7) on and / or in which biocidal Metal microparticles of a mean particle size d50 of 0.1 µm to <1,000 µm are fixed, and / or (ii) with carrier materials (1.1.7) on and / or in which biocidal metal microparticles of a mean particle size d50 of 0.1 µm to <1.000 µm are fixed, are mixed; its use and methods for the production and environmentally friendly disposal of air filter materials (1.1).

The invention belongs to the field of biomedical materials, and discloses a hydrogel patch with piezoelectricity, conductivity and high adhesion and a preparation method and application of the hydrogel patch. Polyvinyl alcohol (PVA) and acrylic acid (AA) serve as polymer frameworks of the hydrogel patch; the invention relates to a nano-zinc oxide / poly (3, 4-ethylenedioxythiophene) / poly (styrenesulfonic acid) (PEDOT: PSS) composite conductive adhesive, which comprises nano-zinc oxide (ZnO) as a piezoelectric material, poly (3, 4-ethylenedioxythiophene)-poly (styrenesulfonic acid) (PEDOT: PSS) as a conductive material, and N-hydroxysuccinimide acrylate (NHS-AA) as an adhesive functional monomer. According to the invention, active ester groups in the N-hydroxysuccinimide acrylate are utilized, so that the patch can quickly form covalent amido bonds with amino groups on the surface of a tissue in a dry state, firm adhesion is realized, local nerve repair can be effectively promoted through a piezoelectric effect, a novel ideal material is provided for disease treatment, and the patch has wide application prospects. Wide clinical application prospects are realized in the field of biological medicines.

The invention discloses an electromagnetic shielding film as well as a preparation method and application thereof. The electromagnetic shielding film comprises the following components: InZnSeyC and a conductive polymer, the conductive polymer is prepared from poly (3, 4-ethylenedioxythiophene) and polystyrene sulfonate; the electromagnetic shielding film prepared by the invention has enough flexibility, bendability and self-supporting characteristic. The composite film can keep stable in structure without additional support, and has potential application prospects in the fields of 6G communication, high-frequency electromagnetic wave interference solving, health protection, flexible circuit boards and the like.

The invention relates to the technical field of negative-electrode-free lithium batteries, in particular to a composite modification layer for a negative electrode current collector and a preparation method and application of the composite modification layer. The composite modification layer for the negative electrode current collector is prepared by the following steps: carrying out pre-lithiation treatment on montmorillonite by utilizing lithium salt and oxalic acid to obtain a first solution; performing pre-lithiation treatment on polystyrolsulfon acid by using lithium hydroxide, and mixing with an alcohol solvent to obtain a second solution; uniformly mixing the first solution and the second solution to obtain a mixed solution; and performing planar two-dimensional spraying on the surface of the negative electrode substrate by using the mixed solution, and after drying, forming a composite modification layer on the surface of the negative electrode substrate. The preparation method solves the problems that solvent molecules of a traditional modification layer are gathered due to polar groups, the desolvation process is hindered, SEI rich in organic matter is formed, and transmission of lithium ions on the surface of the modification layer is hindered.

The invention provides conductive polymer hydrogel, a preparation method thereof and application of the conductive polymer hydrogel in biological tissues. The conductive polymer hydrogel comprises poly (3, 4-ethylenedioxythiophene): polystyrene sulfonate and water, or the conductive polymer hydrogel comprises poly (3, 4-ethylenedioxythiophene): polystyrene sulfonate, an additive component and water, the additive component comprises one or more of a non-conductive polymer and an ionic compound, and the additive component and / or poly (3, 4-ethylenedioxythiophene): polystyrene sulfonate and / or poly (3, 4-ethylenedioxythiophene): polystyrene sulfonate and / or poly (3, 4-ethylenedioxythiophene): polystyrene sulfonate and / or poly (3, 4-ethylenedioxythiophene): polystyrene sulfonate and / or poly (3, 4-ethylenedioxythiophene): polystyrene sulfonate. The polystyrenesulfonate is of a net structure, and the polystyrenesulfonate is of a polystyrenesulfonate structure. The conductive polymer hydrogel has a certain network structure and has better flexibility and conductivity. The conductive polymer hydrogel can meet the wide mechanical-electrical property requirements required by bioelectronic application, and can be effectively used as a biological electrode for epidermal and implantable electrophysiological signal recording by synergistically balancing mechanical compliance and conductivity, and stable and reliable high-signal-to-noise-ratio signals are provided.

The invention relates to the technical field of rare earth hydrometallurgy, and discloses a process for preparing ultra-high-purity rare earth oxide by an ion exchange method, which comprises the following steps: loading monodisperse polystyrene sulfonic acid resin into a chromatographic column, and carrying out constant-temperature circulating pretreatment by using a pre-swelling solution containing urea and ammonium nitrate; preparing a rare earth feed liquid containing urea and with anions being nitrate radicals, introducing the rare earth feed liquid into the chromatographic column for adsorption saturation, and then connecting the rare earth feed liquid in series with the retardation column; carrying out displacement leaching by using a composite leaching solution in which ethylenediamine tetraacetic acid, 5-sulfosalicylic acid and urea are dissolved, and collecting target rare earth effluent in sections; and finally, adding a precipitant into the effluent for precipitation, and filtering, washing and firing to obtain the ultra-pure rare earth oxide. According to the invention, a urea swelling driven dynamic compensation system is constructed, and 10%-14% of monodisperse resin with high crosslinking degree is selected to cooperate with urea-ammonium nitrate pretreatment, so that low-pressure-drop operation at a high flow rate of 1.0 BV / h or above is realized.

The present invention relates to the technical field of graphene composite film preparation, and more particularly to a graphene composite film, its preparation method, and its applications. The present invention utilizes multiple modification processes, including amino lignin modification, carbon nanotube modification, polyimide modification, and glutaraldehyde-crosslinked polystyrene sulfonic acid modification, to prepare the graphene composite film. By optimizing the raw material ratio and preparation process, the graphene composite film significantly improves its tensile strength, elongation at break, electrical conductivity, and thermal stability, showing promising application prospects in molecular devices such as molecular sensors and molecular field-effect transistors.

The application discloses a preparation and by-product recycling process of acesulfame potassium, and belongs to the technical field of food additive production and processing. Amino sulfonic acid is added into N-butyl pyridine hydrogen sulfate ionic liquid and triethylamine in batches to obtain a homogeneous mixed solution; secondly, the mixed solution and diketene are introduced into a micro-channel reactor to perform a condensation reaction; and the discharge liquid is introduced into a polystyrene sulfonic acid resin loaded SO3 fixed bed reactor to perform a cyclization reaction; subsequently, the cyclization product is subjected to hydrolysis, decolorization, potassium salt crystallization and drying to obtain the acesulfame potassium product; and the crystallization mother liquor is separated through a nanofiltration membrane, and the intercepted liquid is an ionic liquid and triethylamine mixture, which is directly reused. The application inhibits the self-polymerization of diketene through the micro-channel reactor, replaces concentrated sulfuric acid with solid acid to avoid waste acid pollution, and realizes efficient recycling of by-products by combining nanofiltration membrane separation and catalytic depolymerization technology, and has the characteristics of green environmental protection and economic efficiency.

This solid electrolytic capacitor (100) includes a capacitor element (170) provided with a first electrode layer (141), a dielectric layer (150), a solid electrolyte layer (163), and a second electrode layer (160) formed on the outer surface of the solid electrolyte layer (163). The solid electrolyte layer (163) is formed of a polymer film containing: a crosslinked polymer obtained through crosslinking of a polymer having a carbonyl group by means of a crosslinking agent including a dihydrazide compound; and a complex formed of polyethylene dioxythiophene and polystyrene sulfonate. The second electrode layer (160) has a conductive polymer film (165) formed in contact with the solid electrolyte layer (163). The solid electrolyte layer (163) is a precoat layer used when forming the conductive polymer film (165) through electrolytic polymerization.

The present application relates to the field of pharmaceutical chemistry technology, and specifically discloses a calcium polystyrene sulfonate and a preparation method thereof. The preparation method of calcium polystyrene sulfonate comprises the following steps: S1: uniformly mixing sodium polystyrene sulfonate microspheres with an aqueous dispersion of zeolite, heating and mixing, solid-liquid separation, and washing to obtain primary sodium polystyrene sulfonate microspheres; S2: preparing the primary sodium polystyrene sulfonate microspheres into suspension one, passing suspension one and calcium chloride solution into a microchannel reactor at the same time, reacting, solid-liquid separation, washing, preparing suspension two, passing suspension two and calcium chloride solution into a microchannel reactor at the same time, reacting, solid-liquid separation, washing, preparing suspension three, passing suspension three and calcium chloride solution into a microchannel reactor at the same time, reacting, solid-liquid separation, washing, and drying to obtain calcium polystyrene sulfonate. The calcium polystyrene sulfonate prepared in the present application has a high calcium loading rate and potassium ion exchange capacity.

The application relates to the field of electrochemistry, in particular to a method for determining ion concentration based on a double electrolytic cell ion selective electrode, which comprises the following steps: using a poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonic acid) modified glassy carbon electrode or a reduced graphene oxide modified glassy carbon electrode as a working electrode, using a full solid-state ion selective electrode as a reference electrode, and using a platinum wire electrode as a counter electrode; inserting the working electrode and the counter electrode into a test electrolytic cell, inserting the reference electrode into a sample electrolytic cell, connecting the test electrolytic cell and the sample electrolytic cell through Ag / AgCl as a salt bridge, and determining the ion concentration in a to-be-measured solution by adopting a constant potential coulomb analysis method. The technical scheme of the application can minimize the current response time while ensuring the accuracy of ion concentration determination, realizes rapid measurement of ion concentration, and can be applied to detection of ion concentration in human serum.

The invention discloses composite hydrogel based on biological template induction and dual-network synergistic enhancement, a preparation method of the composite hydrogel and application of the composite hydrogel in a flexible sensor, and the preparation method of the composite hydrogel comprises the following steps: dissolving hydroxyethyl cellulose in a solvent to obtain a homogeneous dissolving solution; 3, 4-ethylenedioxythiophene and polystyrolsulfon acid are added into the dissolving solution, an initiator and an oxidizing agent are added, the pH of the system is adjusted to be acidic with sulfuric acid, EDOT is fully polymerized till the reaction is complete, and HEC anchored composite conductive polymer dispersion liquid is obtained; the preparation method comprises the following steps: preparing a pre-polymerized solution of acrylamide, uniformly mixing the pre-polymerized solution of acrylamide and the dispersion solution containing the composite conductive polymer, and carrying out thermal-initiated free radical polymerization to obtain a target product. The composite hydrogel is excellent in mechanical property, and a packaged sensor is wide in detection range, high in sensitivity, rapid in response and good in stability and can provide real-time and efficient electrochemical signal change feedback for physiological activities of a human body.

The present application relates to a silicon battery, a battery passivation material and a preparation method thereof, wherein the silicon battery is provided with a passivation layer, and the battery passivation material used in the passivation layer is a carboxylic acid / sulfonic acid / phosphorylated polystyrene compound. It is based on polystyrene sulfonic acid, a common passivation material for silicon batteries, and introduces silicon-based, titanium-based and other highly stable groups, thereby improving the overall stability of the compound, ensuring the stability of the passivation layer, thereby improving the stability of the silicon battery and extending the service life of the silicon battery.

The invention relates to a hybrid nanocarrier system comprising engineered metal nanoparticles (MeNP), a flavonoid (Fl), a Raman-active molecule (RAM), poly(allylamine hydrochloride) (PAH), genetic material (GM), and poly(styrene sulfonate) (PSS), designed for use in fields such as gene therapy, cancer treatment, chemotherapy, treatment of genetic diseases, innovative vaccine technologies, the production of innovative antibiotics for antibacterial and antimicrobial therapies, drug delivery, the dietary supplement market, Raman imaging systems, biotechnological applications, and the agrochemical industry.

The application relates to the technical field of high polymer material preparation, and particularly discloses a flexible high polymer material with glucose response, a preparation method thereof and application of the flexible high polymer material in preparation of a biosensor. The preparation method of the flexible high polymer material with glucose response comprises the following steps: S1. reacting a prepolymer with a polyhydric alcohol to obtain a copolymer; S2. dissolving the copolymer with an organic solvent, then adding hydroxylated carbon nanotubes, poly(3,4-ethylenedioxythiophene) and polystyrene sulfonate, uniformly stirring, and then performing ultrasonic treatment; after the ultrasonic treatment is completed, the reaction product is poured into a mold, and the flexible high polymer material with glucose response is obtained after solidification. The flexible high polymer material with glucose response has good glucose, pH and temperature multi-response performance, and also has good mechanical properties.

A method for manufacturing a work function-tunable ionic liquid-functionalized poly-3,4-ethylenedioxythiophene:poly-styrenesulfonate (PEDOT:PSS) film. The method comprises: a pretreatment step, a film formation step, a film treatment step, and an ionic liquid treatment step. In the pretreatment step, a pretreatment solution is prepared by mixing PEDOT:PSS solution with methanol. In the film formation step, the pretreatment solution is blade-coated onto a substrate and subsequently annealing to form a first-stage film. In the film treatment step, dimethyl sulfoxide(DMSO) is blade-coated onto the first-stage film, followed by annealing. The DMSO-treated first-stage film washed with methanol to remove residual DMSO, forming a second-stage film. In the ionic liquid treatment step, an ionic liquid is ultrasonically agitated in deionized water to prepare an ionic liquid solution. This solution is blade-coated onto the second-stage film. The film is annealed washed with deionized water to remove the ionic liquid, thereby obtaining the ionic liquid-functionalized PEDOT:PSS film.

This invention discloses a rare-earth element-containing cationic catalyst, its preparation method, and its application, belonging to the field of catalyst technology. Using 732 polystyrene sulfonic acid resin as a support, the target catalyst is prepared in four steps: pretreatment, zirconium coordination modification, aminobisphosphonic acid ligand grafting, and rare-earth ion chelation loading. This invention constructs a Brønsted-Lewis dual-acid synergistic catalytic system through directional structural design, achieving both ultra-stable rare-earth loading and retention of strong acidic sites, significantly improving the catalyst's water resistance, catalytic activity, and cycle stability. This catalyst can efficiently catalyze the synthesis of polyoxymethylene dimethyl ether from industrial formaldehyde aqueous solution and methyl acetal, exhibiting excellent formaldehyde conversion and target product selectivity. It is suitable for both batch and continuous production processes and has good prospects for industrial application.

The application discloses a flexible lithium manganate positive pole piece and a preparation method, and belongs to the technical field of lithium ion batteries. The carbon nanofiber membrane with polystyrene sulfonate grafted on the surface and the lithium manganate particles with polystyrene sulfonate adsorbed on the surface are assembled into a filter cake layer in close contact through vacuum filtration, then aniline solution slowly permeates through the filter cake layer and is adsorbed under the condition of no oxidant, so that the aniline monomers are uniformly adsorbed on the polystyrene sulfonate template to form a monomer reaction layer with uniform thickness, and in-situ limited polymerization is carried out, after polymerization and drying, the obtained composite membrane is subjected to gradient heating and hot pressing treatment, rearrangement of polyaniline molecular chains and further compaction at the interface between the carbon fiber and the lithium manganate are realized, and the flexible self-supporting positive pole piece with a positive active film layer free of metal current collectors, a three-dimensional conductive network and a relatively stable conductive state is obtained. The application is suitable for the fields of flexible lithium ion batteries, wearable electronic devices and solid-state lithium batteries.

The invention discloses an anti-freezing conductive hydrogel for osmotic energy collection and a preparation method thereof, the preparation method comprises the following steps: dissolving acrylamide in a mixed solvent of ethylene glycol and water, sequentially adding lithium trifluoromethanesulfonate and polystyrolsulfon acid, and uniformly stirring to obtain a precursor solution; and adding a photoinitiator and N, N '-methylene bisacrylamide, pouring into a mold, and curing by ultraviolet irradiation to obtain the anti-freezing conductive hydrogel. According to the invention, a synergistic anti-freezing system of lithium trifluoromethanesulfonate and ethylene glycol is introduced, and polystyrolsulfon acid is combined to enhance ion selectivity and conductivity, so that the hydrogel still has high water-retaining property, good conductivity and excellent osmotic energy collection performance under a low-temperature condition, and is suitable for efficient and stable osmotic energy power generation under a low-temperature environment.

A method for manufacturing a conductive polymer composite according to an embodiment of the present invention may comprise: a dissolving step for dissolving thermoplastic polyurethane (TPU) powder in a dimethyl sulfoxide (DMSO) organic solvent; a synthetic solution preparation step for preparing a synthetic solution by adding, to the organic solvent, a solution in which poly(3,4-ethylene dioxythiophene polystyrene sulfonate (PEDOT:PSS) and single-walled carbon nanotubes (SWCNTs) are dispersed; a conductive polymer composite extraction step for extracting a conductive polymer composite by evaporating the synthetic solution; and a processing step for processing the conductive polymer composite.

The invention belongs to the technical field of separation membranes, and discloses a composite pervaporation desalination membrane and a preparation method and application thereof, the composite pervaporation desalination membrane sequentially comprises a bottom layer, a positively charged porous support layer and a compact selection layer; the positively charged porous supporting layer comprises a sublayer and a surface layer, the sublayer is attached to the bottom layer, and a compact selection layer is attached to the surface layer; the dense selection layer is made of polyvinyl alcohol crosslinked by amino-terminated hyperbranched polyamide and poly (4-styrenesulfonic acid-co-maleic acid) sodium salt. The composite pervaporation desalination membrane provided by the invention has a moderate surface pore size of the support layer, the support layer for enhancing the charge effect and the loose hydrophilic compact selection layer, and further has high permeation flux on the premise of ensuring efficient interception of salt.

A solar cell includes a first layer including a silica material, a second layer including an indium tin oxide material, and a third layer including a chlorophyll-doped poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS@Chl) material. The solar cell further includes a fourth layer including a silver material, and a fifth layer including a silica material. The PEDOT:PSS@Chl material includes chlorophyll in an amount of 4 to 12 percent by weight (wt. %) based on a total weight of the PEDOT:PSS@Chl material. The PEDOT:PSS@Chl material has a surface area of 500 to 550 meter square per gram (m2 / g). The third layer has a thickness of 30 to 70 nanometer (nm).

The invention provides an oil-resistant and organic-solvent-resistant rubber material which takes vulcanized rubber as a matrix, and a first modified layer and a second modified layer are sequentially deposited on the surface of the matrix, the first modified layer comprises a plurality of alternate poly (diallyldimethylammonium chloride) layers and polystyrene sulfonic acid layers; the second modified layer is a polyvinyl alcohol layer. The oil-resistant and organic-solvent-resistant rubber material provided by the invention can keep the original structure after being soaked in methylbenzene for 15 hours, the volume change rate is only 2.3%, and swelling does not occur; the product does not expand or dissolve after being soaked in four oil agents for 7 days, and the surface of the product is kept flat and smooth. Meanwhile, by testing the tensile strength of a sample before and after the oil-resistant and organic-solvent-resistant rubber material is soaked in an organic solvent and an oiling agent, it is found that the oil-resistant and organic-solvent-resistant rubber material can still keep the tensile strength before modification.

The present invention relates to the technical field of water treatment membranes, and in particular to an acid- and alkali-resistant nanofiltration membrane and a preparation method thereof. The preparation method of the acid- and alkali-resistant nanofiltration membrane comprises: soaking a base membrane in a first grafting solution, taking out and removing excess solution, soaking it in a second grafting solution for cross-linking grafting reaction, and obtaining an acid- and alkali-resistant nanofiltration membrane after solidification; the first grafting solution comprises a polymer, a surfactant, an acid absorbent, and water; the polymer is at least one of a polyamine polymer and a sulfonic acid polymer; the polyamine polymer is at least one of polyethyleneimine, chitosan, polyaniline, and polypropyleneimine; the sulfonic acid polymer is at least one of polystyrenesulfonic acid, polyethylenesulfonic acid, and poly(4-styrenesulfonic acid); the second grafting solution comprises a nitrogen-containing heterocyclic compound, a phase transfer catalyst, and a solvent. The acid- and alkali-resistant nanofiltration membrane prepared by the present invention has excellent acid and alkali resistance.

The application discloses a kind of selective permeation membrane composite material for chemical protective clothing and its preparation method, belong to chemical protective clothing technical field.Functional monomer is grafted on polyvinylidene fluoride main chain by one-pot method, then it is compounded with fabric outer layer, and composite material is formed.The method is simple in preparation process, low in cost, solves the shortcomings, such as high cost and poor mechanical properties, of traditional Nafion and polystyrene sulfonic acid (PSSA) and other materials used for chemical protective clothing, and the obtained composite material has excellent selective permeability and good mechanical properties, and can be widely used for selective permeation type chemical protective clothing material, which provides guarantee for realizing reliable protection performance and good physiological comfort of chemical protective clothing.

The invention relates to a process for the preparation of poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) particles comprising at least the following steps: a) providing a mixture comprising poly(3,4-ethylenedioxythiophene) and polystyrene sulfonate in at least an aqueous solvent; b) forming one or more PEDOT:PSS droplets by introducing the mixture from process step a) into an organic solvent A, wherein the aqueous PEDOT:PSS mixture forms the inside of the droplet and the organic solvent A forms the outside of the droplet; c) contacting the PEDOT:PSS droplets obtained from process step b) with a coagulation solution comprising a coagulation agent and at least one further solvent B, said coagulation solution having a density greater than the density of said organic solvent A and less than the density of the aqueous mixture of poly(3,4-ethylenedioxythiophene) and polystylene sulfonate; and d) coagulating the PEDOT:PSS droplets to PEDOT:PSS particles. Furthermore, the invention discloses spherical PEDOT:PSS particles which do not require further mechanical coagulation of the substance and the use of such particles, for example as cell culture microcarriers or as a suspended electrode.

The invention relates to a method for recovering chinlon from a waste chinlon and cotton blended textile, which comprises the following steps: shearing and crushing the waste chinlon and cotton blended textile, removing impurities, cleaning and drying to obtain sample fragments; hydrogen ions of part of sulfonic acid groups in the polystyrene sulfonic acid are substituted by metal ions to obtain the catalyst; wherein the metal ions are metal ions capable of being coordinated with amido bonds; and mixing the sample fragments with a catalyst, carrying out a depolymerization reaction, and purifying the obtained depolymerization product to obtain caprolactam. The directional catalytic depolymerization effect of chinlon can be achieved, and meanwhile the cotton component is separated; polystyrolsulfon acid and polystyrolsulfon acid metal salt in a catalyst structure coexist to generate a synergistic effect, protons continuously activate newly exposed amido bonds, and metal ions synchronously stabilize intermediates, so that molecular chains are uniformly broken from the tail end to the interior instead of local breakage, generation of oligomers is avoided, and caprolactam monomers are directly generated; the yield of caprolactam is improved.