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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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光聚合制备PVC大分子引发剂及两亲接枝共聚物
DOI: 10.3724/SP.J.1105.2014.13217, PP. 248-254
Keywords: 光聚合,PVC,大分子引发剂,接枝共聚物,两亲性
Abstract:
利用UV光照自引发、双异丙基硫杂蒽酮（BIITX）和异丙基硫杂蒽酮（ITX）引发氯乙烯（VC）聚合得到含缺陷结构或/和ITX残基的PVC.考察了不同引发方式时单体浓度、光强、反应时间和温度对单体转化率、产物分子量及其分布的影响，UV-Vis、1H-NMR和FTIR分析表明所得PVC含缺陷氯或/和ITX残基.以此PVC为大分子引发剂（缺陷结构和ITX残基为引发点），50℃下有效引发了甲基丙烯酸二甲氨基乙酯（DMAEMA）聚合，获得了PVC-g-PDMAEMA共聚物.相比起始PVC，接枝共聚物分子量稍有提高，PDI下降.1H-NMR和FTIR分析证实了接枝共聚物的形成，接枝共聚物在水（pH=3）中组装形成了稳定核-壳结构胶束，显示其具有两亲性.
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