阳离子聚合
聚合
机制(生物学)
高分子化学
化学
表征(材料科学)
水溶液
活性阳离子聚合
聚合物
开环聚合
有机化学
材料科学
纳米技术
哲学
认识论
作者
Shichao You,Jianqiang Ren,Jinghan Zhang,Zhaopeng Yu,Chenqi Zhao,Yibo Wu,Ruofan Liu
出处
期刊:RSC Advances
[The Royal Society of Chemistry]
日期:2021-01-01
卷期号:11 (43): 26955-26962
被引量:4
摘要
Aqueous cationic polymerization has attracted considerable interest as a novel polymerization technique, because it conforms to the "green chemistry" trend and challenges the concept of traditional cationic polymerization. In this paper, a CumOH/B(C6F5)3/Et2O system was used to initiate the aqueous polymerization of p-methylstyrene through suspension and emulsion methods. Several types of surfactants were used, including the cationic surfactant CTAB, non-ionic surfactant NP-40, and anionic surfactant SDBS, and the influences of initiator concentration and temperature on polymerization were investigated. Consistent with previous literature, initiator activity was positively correlated with temperature unlike in traditional cationic polymerization. Gaussian 09W simulation software was used to calculate and optimize changes in the bond lengths and angles of B(C6F5)3 after ether was added to the system. The addition of ether increased the polarity of B(C6F5)3, rendering it soluble in water. 1H-NMR was used in identifying the main chain and terminal structures of the polymer, and the mechanism of p-methylstyrene aqueous phase cationic polymerization was proposed.
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