Shenzhen University

Shaojun Chen

Zaochuan Ge

Shiguo Chen

Haitao Zhuo

Funian Mo

Yan Yang

Yangyang Chen

Heng Chen

Lingjun Yuan

Yuxin Chen

Shuqin Fu

Lidan Gu

Chengbin Chen

Lijun Lai

Junxian Huang

Xingli Zhu

Jinghao Yang

Huanhuan Ren

Provided are a polymer having ultraviolet absorption functionality and preparation method thereof; specifically, three monomers having different ultraviolet absorption bands are used for copolymerization, achieving a significant expansion of the ultraviolet absorption range and achieving the effect of full-band ultraviolet shielding. The obtained polymer film has strong visible light transmittance, fluorescence, easy processing, excellent stability, and remarkable ultraviolet shielding performance, and can be broadly applied in such areas as aviation, construction, agriculture, and optical devices.

Polymer and preparation method and application thereof

A textile having a surface that is coated with a compound of formula I or formula II.

Antibacterial textile and method for preparing the same

Provided by the present invention is a cathode material for a sodium-ion battery with a coating structure and a preparation method therefor. In the present invention, an Na3V2(PO4)3/C cathode material is prepared by means of a sol-gel method. Synthesized zwitterionic polymers may be used as chelating agents and as a carbon source; the process is simple, can quickly form a gel, and the reaction time is shortened contains a zwitterionic structure which may be well dissolved with the precursor of sodium vanadium phosphate to form a stable carbon coating layer. Compared to the prior art, the cathode material for a sodium-ion battery of the present invention enhances the electrical conductivity and cycle performance of the cathode material by means of the doping of nitrogen and sulfur on carbon. At the same time, the prepared cathode material for a sodium-ion battery has sodium vacancies and maintains a stable structure during the process of sodium-ion intercalation/deintercalation.

Cathode material for a sodium-ion battery, preparation method therefor and application thereof

The present disclosure provides a preparation method of a shape memory polyurethane, which comprising: reacting 1,3,5,7-tetrahydroxyadamantane, &#x3b5;-caprolactone, a catalyst and a solvent for 20-50 hours under the conditions of inert gas and 70&#xb0; C. to 130&#xb0; C. to obtain adamantyl star poly(&#x3b5;-caprolactone), wherein the mole ratio of the 1,3,5,7-tetrahydroxyadamantane to the &#x3b5;-caprolactone is 1:(40-240); mixing the adamantyl star poly(&#x3b5;-caprolactone) with long-chain diol and diisocyanate, adding the catalyst and the solvent, and reacting for 3-9 hours at 50-100&#xb0; C. to obtain an isocyanate-terminated polyurethane prepolymer, wherein the mass ratio of the adamantyl star poly(&#x3b5;-caprolactone) to the long-chain diol is 9:1-1:9; and adding a linking agent in the polyurethane prepolymer so that the linking agent reacts with isocyanate in the polyurethane prepolymer to obtain an adamantyl cross-linked shape memory polyurethane.

Preparation method of shape memory polyurethane

The present invention is applicable to the field of polymer material preparation, and provides a method for preparing polymer hollow microspheres, the steps are as follows: mixing a styrene-based monomer A, an acrylic monomer B, and an acrylate monomer C with a initiator, and reacting to prepare a seed emulsion; maintaining the temperature of the seed emulsion unchanged, mixing the styrene-based monomer A, the monomer C, and a sulfur-containing acrylic monomer D with the initiator, continuously dripping to the seed emulsion, to obtain a product; adding alkaline solution to the product, then adding acid solution, and finally neutralizing, to obtain hollow microspheres.

Polymer hollow microspheres and preparation method and application thereof

The present invention relates to the field of shape memory materials. Specifically, a shape memory polymer, a preparation method therefor, and use thereof are provided. The shape memory polymer is formed by polymerizing methyl ally polyethenoxy ether and 2-(dimethylamino)ethyl methacrylate. The synthesis steps of the shape memory polymer are simplified, the preparation method is simple, and the production cost is low. In addition, the shape memory polymer prepared in the present invention has excellent shape memory performance and high hydrophilicity and biocompatibility, and is suitable for preparing biomedical materials in the field of biomedical science.

Shape memory polymer, preparation method therefor, and use thereof

A method for preparing an amphoteric shape-memory polyurethane and an amphoteric shape-memory polyurethane prepared by the method, the method including: 1) polymerizing monomer A and monomer B to synthesize a polyurethane; and 2) contacting monomer D and the polyurethane to conduct a ring-opening reaction on a nitrogen group of the polyurethane, to yield an amphoteric shape-memory polyurethane. The monomer A is a N-alkyl dialkanolamine having a formula I. The monomer B is a polyisocyanate, and the monomer D is an alkyl sulfonate.

Amphoteric shape-memory polyurethane and method for preparing the same

The present disclosure relates to the field of shape memory materials, it discloses a betaine-based shape memory polymer and the preparation method thereof. The polymer is formed through free radical polymerization of an unsaturated betaine monomer, an acrylic monomer, and an ethylene glycol divinyl ether monomer with the addition of an initiator. The betaine-based shape memory polymer has thermosensitive shape memory property and wet sensitive shape memory property, and it has good biocompatibility and an excellent shape memory property, antibacterial property. It is of great potential for use in engineering, construction, daily life and medical service.

Betaine-based shape memory polymer and preparation method thereof

An amphoteric betaine-type polycarboxylic acid water reducer and a preparation method therefor are provided in the present invention. An unsaturated betaine-type monomer A and an acrylic acid-type polyethylene glycol monomer B are placed in a reaction container, stirred until uniform and then an acrylic acid-type monomer C is added, the stirring is continued and water is added to make adjustments so as to make the total mass of the monomers account for 10%-20% of the total mass of the aqueous solution; and under the protection of an inert gas, the temperature is raised to 60&#xb0; C.-100&#xb0; C., an aqueous initiator solution is added, maintaining the temperature and reacting for 4-6 h, and after the reaction is completed, the solution is cooled to room temperature, and the pH value thereof is adjusted to 5-7 to prepare the amphoteric betaine-type polycarboxylic acid water reducer.

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Guangdong, China

Shaojun Chen