Preparation of polymer brushes on palygorskite surfaces via RAFT polymerization

被引：26
|
作者：
Wang, Li-Ping [2 ]
Wang, Yun-Pu [1 ]
Wang, Rong-Min [1 ]
Zhang, Shou-Cun [1 ]
机构：
[1] NW Normal Univ, Key Lab Polymer Mat Gansu Province, Inst Polymer, Lanzhou 730070, Peoples R China
[2] NW Normal Univ, Inst Polymer, Key Lab Polymer Gansu Province, Lanzhou 730070, Peoples R China
来源：
REACTIVE & FUNCTIONAL POLYMERS | 2008年 / 68卷 / 02期
基金：
中国国家自然科学基金;
关键词：
polymer brushes; palygorskite; reversible addition fragmentation chain transfer polymerization (RAFT); chain transfer agent (CTA); living" characteristic;
D O I：
10.1016/j.reactfunctpolym.2007.10.035
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Polymer brushes on palygorskite are successfully prepared by reversible addition fragmentation chain transfer polymerization (RAFT) technique using palygorskite as a RAFT chain transfer agent (CTA) support. The dithioester groups are introduced onto the palygorskite surface and methyl methacrylate (MMA) polymerization is performed in the presence of palygorskite supported benzyl dithiopropyltrimethoxysilane (P-Si-BDPM) which is used as chain transfer agent (CTA). The observed narrow molecular weight distributions (M-w/M-n), linear kinetic plots and linear plots of molecular weight (M,,) versus conversion for the free polymer formed in solution indicate that the chain growth from the palygorskite surface is a controlled process with a "living" characteristic. The microstructures are studied by FT-IR, Scanning probe microscope (SPM) and X-ray photoelectron spectroscopy (XPS). (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：643 / 648
页数：6
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