Synthesis and Properties of a Coil-g-Rod Polymer Brush by Combination of ATRP and Alternating Copolymerization
Synthesis and Properties of a Coil-g-Rod Polymer Brush by Combination of ATRP and Alternating Copolymerization
复制标题
ATRP与交替共聚相结合的Coil-g-Rod聚合物刷的合成及性能
DOI：
10.1021/ma502414m
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发表时间：
2015
期刊：
影响因子：
5.5
通讯作者：
Fan Xing-He
中科院分区：
文献类型：
--
作者：
Ping Jing;Qiao Yangyang;Tian Haijian;Shen Zhihao;Fan Xing-He
我们采用“接枝”策略，通过苯乙烯(St)和马来酰亚胺端基poly{2，5-bis[(4-methoxyphenyl)oxycarbonyl]styrene}(MI-PMPCS)交替共聚合成了盘状接枝聚合物刷MI-PMPCS。以呋喃与Diels-Alder反应保护的引发剂引发2，5-双[(4-甲氧基苯基)氧羰基]苯乙烯(MPC)的原子转移自由基聚合，再经逆Diels-Alder反应脱保护，合成了MIPMPCS。用核磁共振氢谱、凝胶渗透色谱(GPC)和凝胶渗透色谱与多角度激光光散射相结合的方法测定了聚合物刷的化学结构和相对分子质量。主链的最高聚合度(DP)为103，对于具有刚性侧链的聚合物刷子来说，聚合度明显较大。随着加料速率的增加，主链长度增加。
We synthesized a coil-g-rod polymer brush, poly{styrene-alt-(maleimide-g-poly{2,5-bis[(4-methoxyphenyl)oxycarbonyl]styrene})}(P{St-alt-(MI-g-PMPCS)}), by alternating copolymerization of styrene (St) and maleimide-terminated poly{2,5-bis[(4-methoxyphenyl)oxycarbonyl]styrene} (MI-PMPCS) with the “grafting through” strategy. MI-PMPCS was synthesized by using the protection strategy in which the initiator protected by Diels–Alder reaction with furan was used to initiate atom transfer radical polymerization of 2,5-bis[(4-methoxyphenyl)oxycarbonyl]styrene (MPCS), and then furan was deprotected by retro-Diels–Alder reaction. 1H NMR, gel permeation chromatography (GPC), and GPC coupled with multiangle laser light scattering were used to determine the chemical structures and molecular weights of the polymer brushes. The highest degree of polymerization (DP) of the main chain is 103, which is significantly large for polymer brushes with rigid side chains. The main-chain length increases with increasing feeding rati...