54 results about "Cation radical" patented technology

The invention relates to a bi-benzene-sulfonate interface initiator and a preparing method thereof. A tertiary amine compound with bi-benzene-sulfonate anions and bi-dodecyl is synthesized, and the characteristics of a surfactant are shown; meanwhile, tertiary amine and potassium peroxodisulfate can be subjected to a redox reaction at the normal temperature, cation free radicals are formed on nitrogen atoms and then converted into carbon free radicals at adjacent positions, generating of the free radicals can be repeated, control is flexible, multi-phase concatenation polymerization is achieved, polymerization of styrene and butyl acrylate and polymerization of styrene and N,N-dimethyl acrylamide are sequentially triggered on a water / oil interface, and a multi-segmented copolymer is obtained. An experiment proves that the feeding ratio of monomer and the composition ratio of the copolymer are quite coincident, it shows that the triggering efficiency of the initiator is high, the polymerization reaction in the mode is moderate and controllable in condition and low in energy consumption, other organic solvents and emulsifiers are avoided, the product is pure, and the requirements of green chemistry are completely met.

The invention discloses a cationic-emulsion-particle-toughened hydrophobic association hydrogel. The cationic-emulsion-particle-toughened hydrophobic association hydrogel is prepared from cationic emulsion particles, a hydrophobic monomer, an emulsifying agent, main monomers and deionized water, wherein the weight ratio of the cationic emulsion particles to the hydrophobic monomer to the emulsifying agent to the main monomers and to the deionized water is (0.1-1.0):(0.5-1.0):3:40:100. The cationic emulsion particles are copolymerized from styrene and cationic monomers, an initiating agent is decomposed, cationic free radicals and cationic monomer chain sections are generated, and the good hydrophilia is distributed on the surfaces of microspheres; the deionized water, the main monomer, the emulsifying agent, the initiating agent, the hydrophobic monomer and the cationic emulsion particles are mixed to be even and injected into a mold and heated, and the hydrogel is obtained. The hydrophobic monomer are stabilized on the particle surfaces by a surfactant through the cationic emulsion particles to form a hydrophobic association center, anion free radicals are adsorbed through electric charges, and a hydrogel network is formed in a triggered-polymerized mode. The cationic emulsion particles have the hydrophobic association physical cross-linking and ionic cross-linking agent effects in the hydrogel, the hydrogel is reinforced, and the mechanical performance of the hydrogel is obviously improved. The breaking elongation rate is 1,780%, and the tensile strength is 1.37 MPa.

The invention relates to a method for preparing arrayed organic nanoparticles. The method comprises: adopting a AgClO4 and I2 oxidation method or a FeCl3 oxidation method to prepare cation radical solution of organic molecules; dipping arrayed metal electrode substrates in the solution; allowing cations to be subjected to replacement reaction with arrayed metal on the electrode substrates; and obtaining the arrayed organic nanoparticles. The method provided by the method is simple, practicable and capable of preparing the arrayed organic nanoparticles in large area.

The invention discloses a preparation method of an antistatic non-woven fabric, and belongs to the technical field of textile preparation. Polypyrrole is formed from pyrrole by initiating of cationicradical polymerization in a conductive mixed solution and an oxidation initiating solution, and reaction on the surface of a PET spunlace substrate and a mixed solution to improve the antistatic property of the nonwoven fabric; in the oxidation initiating solution, sulfosalicylic acid and ferric nitrate are mixed to form an aqueous solution of the sulfosalicylic acid and the ferric nitrate, and the sulfosalicylic acid is chelated with iron ions to promote stable redox reaction, so that the polypyrrole is uniformly deposited and distributed on the surface of a composite material of the PET spunlace substrate and PVA-co-PE nanofiber, after a modified non-woven fabric is immersed in the suspension of the PVA-co-PE nanofiber, the surface of the modified non-woven fabric is coated with a layerof the PVA-co-PE nanofiber, the specific surface area of the composite material is increased, the mass per unit area of the polypyrrole allowed to be the adsorbed and contained can be more, hole transferring efficiency is higher, the antistatic property of the nonwoven fabric is improved, and the application prospect is broad.

The invention belongs to the field of materials, and relates to a method for synthesizing tetrathiafulvalene molecule-based micron and / or nano functional materials by a supermolecule self-assembly method. The method comprises the following steps: dissolving tetrathiafulvalene derivatives and inorganic metallic salts into solvents which have different specific gravities and can be mutually dissolved respectively, and making the solvent in which the tetrathiafulvalene derivatives are dissolved and the solvent in which the inorganic metallic salts are dissolved, which have different specific gravities, interpenetrate mutually and be mixed; or mixing the tetrathiafulvalene derivatives and the inorganic metallic salts, dissolving the mixture of the tetrathiafulvalene derivatives and the inorganic metallic salts into the same solvent, and volatilizing the solvent to obtain micron and / or nano functional materials of the tetrathiafulvalene derivatives and coordination polymers of metallic ions, composite micron and / or nano functional materials of cation free radicals of the tetrathiafulvalene derivatives and elementary metals, the micron and / or nano functional materials of the cation freeradicals of the tetrathiafulvalene derivatives, or the micron and / or nano functional materials of the elementary metals. The materials have the advantages of novel structure, uniform form, convenientpreparation and novel electrical and magnetic properties.

The invention provides a papermaking retention and drainage reinforcing agent. The papermaking retention and drainage reinforcing agent is dispersion liquid. Water-soluble polymers (A) are dispersed in brine solution by the aid of polymeric dispersants (B) to obtain the dispersion liquid, the salinity of the brine solution is higher than, by weight, 10% and is lower than the saturation concentration, the average particle size of the dispersion liquid is 0.1-100 micrometers, the dispersion liquid comprises, by weight, 10-40% of water-soluble polymers (A), the viscosity of the dispersion liquidat the temperature of 25 DEG C is 3000-20000 mPa s, the polymeric dispersants (B) are polymeric dispersants, the polymeric dispersants comprise polymerization components including, by molar mass, 10-99.979% of positive ion radical polymer monomers (b1), 0.01-1% of (methyl) allyl monomers (b2), 0.001-0.1% of cross-linking monomers (b3) and 0.01-1% of N-substituted (methyl) acrylamides (b4), the polymerization components are copolymerized to obtain the polymeric dispersants, the N-substituted (methyl) acrylamides (b4) are represented by a general formula CH2=C(R1)-CONR2(R2), the R1 in the formula represents hydrogen atoms or methyl, the R2 independently represents linear-chain or branched-chain alkyl, and the carbon atom number of the linear-chain or branched-chain alkyl is 1-4.