Synthesis of functionalized polyisobutylenes using the propylene epoxide/TiCl4 initiating system

被引：15

作者：

Albarran, Alejandra Alvarez ^{[1
]}

Silantyeva, Elena ^{[1
]}

Seo, Kwang Su ^{[2
]}

Puskas, Judit E. ^{[1
,2
]}

机构：

[1] Univ Akron, Dept Polymer Sci, Akron, OH 44325 USA

[2] Univ Akron, Dept Chem & Biomol Engn, Akron, OH 44325 USA

来源：

POLYMER CHEMISTRY | 2014年 / 5卷 / 16期

基金：

美国国家科学基金会;

关键词：

TRANSFER AGENTS INIFERS; CARBOCATIONIC POLYMERIZATION; TELECHELIC POLYMERS; SUBSTITUTION; ISOBUTYLENE; COPOLYMERS;

D O I：

10.1039/c4py00363b

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

In this paper, we report the synthesis of symmetric and asymmetric telechelic polyisobutylenes (PIBs). A PIB with a primary hydroxy head group and an allyl end group (HO-PIB-Allyl, M-n = 4300 g mol(-1); M-w/M-n = 1.2) was synthesized by living carbocationic polymerization of isobutylene (IB) using propylene epoxide as an initiator and allyltrimethylsilane as a terminating agent. Thiol-ene click chemistry using 2-mercaptoethanol and 1,2-ethanedithiol yielded an asymmetric HO-PIB-SEt-OH (M-n = 4646 g mol(-1); M-w/M-n = 1.18) and a symmetric HO-PIB-OH (M-n, = 8594 g mol(-1); M-w/M-n = 1.2) respectively. A symmetric allyl telechelic PIB (M-n = 8669 g mol(-1); M-w/M-n = 1.2) was prepared by enzymatic transesterification of divinyl adipate with the primary hydroxy group of HO-PIB-Allyl.

引用

页码：4710 / 4714

页数：5

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