Synthesis, characterization and thermal degradation kinetics of photoresponsive graft copolymers
Synthesis, characterization and thermal degradation kinetics of photoresponsive graft copolymers
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光响应接枝共聚物的合成、表征及热降解动力学
DOI：
10.1177/0892705714563114
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发表时间：
2016
影响因子：
3.3
通讯作者：
K. Demirelli
中科院分区：
文献类型：
--
作者：
F. Bezgin;K. Demirelli
以苯乙烯（St）和7-甲基丙烯酰氧基-4-氯甲基古马隆（MAOCMC）为引发剂，合成了一种大分子引发剂。在大分子引发剂聚（7-甲基丙烯酰氧基-4-氯甲基苯并呋喃-苯乙烯）存在下，溴化铜/2，2 ′-联吡啶催化下，于110°C进行了苯并呋喃与甲基丙烯酸甲酯的接枝反应。由Coats-Redfern、Tang和Flynn-Wall-Ozawa方法获得的接枝共聚物的活化能值分别为212.69、214.44和223.57 kJ mol−1。采用微分法和差分积分法对计算结果进行了比较。实验结果表明，在相变区，反应机理为一维扩散（Dn）减速型。
A macroinitiator was prepared by copolymerization of styrene (St) with 7-methacryloyloxy-4-chloromethylcoumarone (MAOCMC). Grafting studies of coumarone with methyl methylacrylate were carried out in the presence of the macroinitiator poly(7-methacryloyloxy-4-chloromethylcoumarone-co-styrene) and with the catalyst of copper(I) bromide/2,2′-bipyridyne at 110°C. The activation energy valuations of graft copolymers acquired by Coats–Redfern, Tang and Flynn–Wall–Ozawa methods were designated to be 212.69, 214.44 and 223.57 kJ mol−1, respectively. For the outcomes were compared with these valuation differential methods and discrepant integral were used. In terms of experiential outcomes, the reaction mechanism was a dimensional diffusion (Dn) deceleration type in the transformation range worked.