149 results about "Sodium polystyrene sulphonate" patented technology

The invention relates to a method for preparing composite nanofiltration membrane, to the field of film separating technology. The electrolyte multilayer film is assembled on the substrate film as an ultrathin separating film using layers static self-assembly technology, to obtain the composite nanofiltration membrane. The preparation method alternately immerges the substrate film into the polyanion solution and the polycation solution to alternately and repeatedly aggrade on the surface of the substrate film to get the composite nanofiltration membrane ultrathin separating layer after the assemble of a certain layers. The said polyanion solution is sodium polystyrene sulfonate or sodium polyacrylate; the said polycation solution is poly dimethyl diallyl ammonium chloride or polyallyl ammonium chloride, and the said substrate film is polyethersulfone ultrafiltration film or polysulfone ultrafiltration film. The method of the invention has a simple process, and the thickness of ultrathin separating layer is controlled. The compositenanofiltration membrane has a using foreground in the field of sea water and bitter desalination, sewage disposal and callback, ultra pure water preparation and so on.

A protamine-sodium alginate microsoftgel with shell-core structure is prepared through reaction between manganese sulfate, ammonium dicarbonate, and polystyrene-sodium sulfonate solution to obtain the colloid particles of manganese carbonate, dispersing in liquid, adding it to the aqueous solution of protamine, stirring, removing excessive protamine, adding the aqueous solution of sodium alginate, stirring, removing excessive sodium alginate, altermative adsorption to obtain shell-core structure and removing manganese carbonate by acid solution.

Antibiotic-associated diarrhea, such as that caused by Clostridium difficile, represents a serious medical complication that can result from administering a broad-spectrum antibiotic to a subject. Such diarrhea leads to significant potassium loss from the subject. The present invention discloses a polymeric therapeutic agent that treats antibiotic-associated diarrhea and is physiologically potassium neutral. This polymer contains polystyrene sodium sulfonate and polystyrene potassium sulfonate repeat units.

The invention discloses a method for preparing a high-performance nanofiltration composite membrane by constructing a ZIF-8 intermediate layer. The method comprises the following steps: 1) preparing aZIF-8 intermediate layer on a porous base membrane through a water / oil interface synthesis method; and 2) preparing the polyamide separation layer on the ZIF-8 layer through an interfacial polymerization method. The ZIF-8 intermediate layer prepared by the water / oil interface synthesis method has the characteristics of uniform structure, small thickness and low agglomeration; sodium polystyrenesulfonate with a certain concentration is added into a Zn<2+>-containing water phase, and a ZIF-8 generation interface is effectively stabilized, so that the ZIF-8 intermediate layer with continuous anduniform structural properties is obtained. The polyamide separation layer formed on the basis is small in thickness and free of defects, so that the prepared nanofiltration membrane has high flux andeffective bivalent anion and dye interception capacity. The water / oil interface synthesis method adopted for constructing the ZIF-8 intermediate layer is similar to an interface polymerization process adopted for preparing the polyamide layer, so that improvement on the basis of a traditional polyamide nanofiltration composite membrane preparation process is facilitated, and enlarged preparationand production are realized.

The invention discloses a mussel bionic auxiliary polyelectrolyte layer-by-layer self-assembled nanofiltration membrane and application thereof. The nanofiltration membrane is prepared by circularly coating and modifying the surface of a base membrane with a polydopamine / polyethyleneimine mixed solution and a polyanion electrolyte solution for 1-3 times by virtue of a layer-by-layer self-assemblytechnology, and finally carrying out cross-linking reaction. Polydopamine and polyethyleneimine with high hydrophilicity are adopted, both may form a covalent bond, a stable coating is formed on the surface of the membrane; after performing coating modification, coating modification is carried out by adopting sodium polystyrenesulfonate with negative electricity, sodium polystyrenesulfonate and positively charged polyethyleneimine can be subjected to electrostatic adsorption, and benzene rings in molecules of sodium polystyrenesulfonate and benzene rings in molecules of polydopamine have a pi-pi stacking effect so that the stability of the coating is improved, coating is more uniform, and the prepared nanofiltration membrane is good in hydrophilicity, high in rejection rate, high in pollution resistance and high in chemical stability.

The invention relates to a polymer photoelectron film, a preparation method and application thereof. The polymer photoelectron film includes a polymer film loaded on a substrate, wherein a layer of conductive modified film is arranged between the substrate and the polymer film; the substrate includes glass covered by tin indium oxide (ITO), glass covered by fluoro indium oxide, glass covered by semitransparent silver film and glass covered by semitransparent gold film; the loaded polymer film includes Poly (3-hexylthiophene), PCBM and MEH-PPV; and the conductive modified film is PEDOT: sodium polystyrene sulphonate. The preparation method includes the steps of cleaning the substrate, modifying the substrate, loading the polymer film on the modified substrate, and controlling the volatilization time and the annealing heat treatment of dissolvent in the polymer film. The invention has the advantages that the performance of the prepared polymer photoelectron film is obviously higher than that of polymer film prepared under normal pressure, the performances of the solar cells and other semiconductor devices can be greatly improved, and the market competitiveness can be strengthened; and the invention has low cost and simple operation, and can be easily combined with the traditional semiconductor production process.

The invention discloses an equipment descaling agent and a preparation method thereof. The equipment descaling agent contains the following ingredients in parts by weight: 30-40 parts of aminosulfonic acid, 15-25 parts of ethylenediamine tetra-acetic acid, 15-25 parts of citric acid, 1-5 parts of sodium lauryl sulfate, 0.5-3 parts of sodium polystyrene sulfonate, 5-10 parts of lignin, 3-8 parts of hexamethylene tetramine, 2-8 parts of ethanol, 0.5-1 part of sodium tripolyphosphate and 120-150 parts of water. The preparation method comprises the steps of heating the water to the temperature of 60-70 DEG C, adding all the ingredients into the water except for ethanol and sodium tripolyphosphate, stirring until the ingredients are dissolved, then, lowering the temperature to 50-60 DEG C, adding ethanol and sodium tripolyphosphate, and continuing to stir until a solution is clarified, thereby obtaining the equipment descaling agent. The equipment descaling agent disclosed by the invention is safe and non-toxic, is simple in production process, low in cost, convenient in use and good in descaling effect, and can be widely used.

The invention discloses a preparation method of a high-performance ZIF-8-containing nanofiltration membrane based on two-step addition of sodium polystyrene sulfonate. The method comprises the following steps: (1) modifying an ultrafiltration base membrane by using a sodium polystyrene sulfonate (PSS) aqueous solution; (2) introducing an aqueous solution containing Zn<2+>; (3) introducing an aqueous solution containing 2-methylimidazole and PSS, preparing ZIF-8 by using an in-situ growth method, and adjusting the particle loading capacity; (4) introducing an aqueous solution containing piperazine (PIP); and (5) introducing an n-hexane solution containing trimesoyl chloride (TMC), and preparing a polyamide skin layer through interfacial polymerization. ZIF-8 is deposited on the surface of the base membrane through the in-situ growth method, the preparation method is simple and convenient, and industrial amplification is facilitated; in the step (1), anchoring of Zn<2+> on the surface ofthe base membrane is realized by using the PSS, and in the step (3), the deposition amount of ZIF-8 is increased by using the PSS, so that agglomeration of the ZIF-8 is avoided; and the polyamide nanofiltration membrane containing ZIF-8 prepared by the method shows high water flux and stable interception performance on divalent ions and dyes.

The invention relates to the field of preparation technologies and applications of organic semiconductor materials, and concretely relates to a polyether PEDOT water dispersion and a preparation method thereof. The preparation of the crosslinkable EDOT water dispersion is completed by carrying out a reaction on a monomer, an oxidant, a catalyst, a template, and a doping agent in deionized water, wherein the template and the doping agent are a copolymer of functionalized polystyrene sulfonate and terminated aqueous polyurethane. The water dispersion is dark blue in color, and is post-processed in a centrifuging mode after the preparation. A film prepared from the dispersion can release the crosslinking at a high temperature, so the water absorption capability of the film is substantially reduced, and the film forming effect is improved. The formed film is tested by an ultraviolet spectrophotometer, and results show that there is no obvious absorption in the visible light wavelength range, so the film is suitable for being a transparent electrode.