Characteristics and Mechanism of Styrene Cationic Polymerization in Aqueous Media Initiated by Cumyl Alcohol/B(C6F5)3

被引：12

作者：

Zhang, Jinghan ^{[1
]}

Wu, Yibo ^{[2
,3
]}

Li, Xiaoning ^{[1
]}

Yang, Dan ^{[2
]}

Zhang, Min ^{[2
]}

Wang, Hao ^{[2
]}

Shang, Yuwei ^{[2
]}

Ren, Ping ^{[2
]}

Mu, Xin ^{[2
]}

Li, Shuxin ^{[2
]}

Guo, Wenli ^{[1
,3
]}

机构：

[1] Beijing Univ Chem Technol, Coll Mat Sci & Engn, Beijing 100029, Peoples R China

[2] Beijing Inst Petrochem Technol, Dept Mat Sci & Engn, Beijing 102617, Peoples R China

[3] Beijing Inst Petrochem Technol, Beijing Key Lab Special Elastomer Composite Mat, Beijing 102617, Peoples R China

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 2019年 / 220卷 / 04期

基金：

美国国家科学基金会; 北京市自然科学基金;

关键词：

aqueous media; cationic polymerization; tris(pentafluorophenyl)boron; density functional theory; styrene; HIGHLY REACTIVE POLYISOBUTYLENES; P-METHOXYSTYRENE; MOLECULAR-DYNAMICS; LEWIS-ACIDS; SUSPENSION; VINYL; ISOBUTYLENE; COMPLEXES; CATALYST; SOLVENT;

D O I：

10.1002/macp.201800419

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Styrene cationic polymerizations initiated by cumyl alcohol (CumOH)/B(C6F5)(3) are systematically studied in aqueous suspension and emulsion. Theoretical calculations and experimental research suggest that CumOH/B(C6F5)(3) has higher initiating activity than H2O/B(C6F5)(3). During emulsion polymerization of styrene, molecular weight and polymerization rate decrease with the addition of surfactants. These polymerization processes share the same features. Specifically, all elemental reactions (initiation, propagation, and termination) in aqueous media occur at the droplet interface. End structure analysis indicates that chain transfer reactions to water and a-proton elimination and chain transfer reactions to monomer occur. The possible mechanism for the styrene cationic polymerization in aqueous media is demonstrated.

引用

页数：9

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