Living cationic polymerization and polyhomologation: an ideal combination to synthesize functionalized polyethylene-polyisobutylene block copolymers

被引：26

作者：

Zhang, Hefeng ^{[1
]}

Banerjee, Sanjib ^{[2
]}

Faust, Rudolf ^{[2
]}

Hadjichristidis, Nikos ^{[1
]}

机构：

[1] KAUST, Div Phys Sci & Engn, KAUST Catalysis Ctr, Polymer Synth Lab, Thuwal 239556900, Saudi Arabia

[2] Univ Massachusetts Lowell, Polymer Sci Program, Dept Chem, One Univ Ave, Lowell, MA 01854 USA

来源：

POLYMER CHEMISTRY | 2016年 / 7卷 / 06期

关键词：

TRANSFER RADICAL POLYMERIZATION; DIMETHYLSULFOXONIUM METHYLIDE; POLYMETHYLENE; STRATEGY; YLIDES;

D O I：

10.1039/c5py01892g

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A series of hydroxyl-terminated polyisobutylene-b-polyethylene (PIB-b-PE-OH) copolymers were synthesized by combining living cationic polymerization and polyhomologation. Allyl-terminated PIBs, synthesized by living cationic polymerization, were hydroborated with BH3 center dot THF to produce 3-arm boron-linked stars, PIB3B, which served as macroinitiators for the in situ polyhomologation of dimethylsulfoxonium methylide. The resulting 3-arm star block copolymers, (PIB-b-PE)(3)B, were oxidized/hydrolysed to afford PIB-b-PE-OH. Characterization of all intermediates and final products by high temperature gel permeation chromatography (HT-GPC) and proton nuclear magnetic resonance spectroscopy (H-1 NMR) revealed the well-defined character of the copolymers. The thermal properties of the copolymers were studied by differential scanning calorimetry (DSC).

引用

页码：1217 / 1220

页数：4

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