Styrenic block copolymer and preparation method thereof

A technology of block copolymers and styrenes, which is applied in the field of styrenic block copolymers and its preparation, can solve the problems of cumbersome steps for hydroxyl-functionalized polymers, difficulty in controlling the sulfonation reaction process, and cumbersome preparation process, etc. Achieve the effects of improving the use temperature and thermal stability, enhancing interaction, and enhancing hydrophilicity
CN112608402AActive Publication Date: 2021-04-06BEIJING UNIV OF CHEM TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIJING UNIV OF CHEM TECH
Publication Date
2021-04-06

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Abstract

The invention belonging to the field of elastomers, and discloses a styrenic block copolymer and a preparation method thereof. The preparation method of the styrenic block copolymer comprises the following steps: S1, carrying out a sequential active cation copolymerization reaction on isobutene, styrene and p-methylstyrene in the presence of a cation initiator to obtain a block copolymer; S2, carrying out a bromination/chlorination reaction on the block copolymer and a bromination/chlorination reagent to obtain a brominated/chlorinated block copolymer; and S3, carrying out side group nitrogen onium/phosphorus onium ion functionalization, amino functionalization or hydroxyl functionalization on the brominated/chlorinated block copolymer. According to the styrenic block copolymer provided by the invention, side functional groups interact with one another to form a thermally reversible physical crosslinking point and a three-dimensional network structure, so the copolymer has excellent self-repairing performance at a certain temperature, the use temperature, the thermal stability and the hydrophilicity of the copolymer are improved, the mechanical property of the copolymer is improved, and the copolymer is enhanced and toughened.
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Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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