Verification of controlled grafting of styrene from cellulose via radiation-induced RAFT polymerization

被引：160

作者：

Barsbay, Murat ^{[1
]}

Guven, Olgun ^{[1
]}

Stenzel, Martina H. ^{[2
]}

Davis, Thomas P. ^{[2
]}

Barner-Kowollik, Christopher ^{[2
]}

Barner, Leonie ^{[2
]}

机构：

[1] Hacettepe Univ, Dept Chem, Fac Sci, TR-06532 Ankara, Turkey

[2] Univ New S Wales, Sch Chem Sci & Engn, Ctr Adv Macromol Design, Sydney, NSW 2052, Australia

来源：

MACROMOLECULES | 2007年 / 40卷 / 20期

关键词：

D O I：

10.1021/ma070825u

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Reversible addition - fragmentation chain transfer (RAFT) polymerization was applied to radiation-induced graft polymerization of styrene from cellulose. The grafting of styrene from cellulose substrates using the chain transfer agent cumyl phenyldithioacetate was confirmed by Raman and X-ray photoelectron spectroscopy, differential scanning calorimetery, thermogravimetric analysis, scanning electron microscopy, and contact angle analysis. Grafted polystyrene chains were cleaved from the cellulose surface by acidic hydrolysis of the cellulose. The number-average molecular weight and polydispersity index of the grafted and the free (nongrafted) polystyrenes obtained under identical conditions were determined by size exclusion chromatography. Grafted and nongrafted polystyrenes have almost the same (near theoretical) molecular weight and narrow polydispersity, thus proving for the first time the control of the grafting process mediated via RAFT without any prior functionalization of the surface.

引用

页码：7140 / 7147

页数：8

共 49 条

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