Lower critical solution temperature behavior of linear polymers in ionic liquids and the corresponding volume phase transition of polymer gels
Lower critical solution temperature behavior of linear polymers in ionic liquids and the corresponding volume phase transition of polymer gels
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DOI：
10.1021/la062986h
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发表时间：
2007-01-30
期刊：
影响因子：
3.9
通讯作者：
Watanabe, Masayoshi
中科院分区：
文献类型：
--
作者：
Ueki, Takeshi;Watanabe, Masayoshi
聚甲基丙烯酸苄酯（PBzMA）及其共聚物在1-乙基-3-甲基咪唑双（三氟甲烷砜）亚胺（[C(2)mim][NTf2]）等常见疏水离子液体（il）中表现出较低的临界溶液温度（LCST）型相分离。对PBzMA/IL混合体系的浊度测量表明，lst型相分离温度随着聚合物和IL化学结构的变化而发生显著变化。此外，交联PBzMA凝胶在[C(2)mim][NTf2]中随着温度的变化呈现可逆和不连续的体积相变。
Poly(benzyl methacrylate) (PBzMA) and its copolymers exhibit lower critical solution temperature (LCST)-type phase separation in common hydrophobic ionic liquids (ILs) such as 1-ethyl-3-methylimidazolium bis(trifluoromethane sulfone)imide ([C(2)mim][NTf2]). The turbidity measurements for PBzMA/IL mixed systems reveal that the LCST-type phase separation temperatures change significantly with the changes in the chemical structures of polymers and ILs. Moreover, cross-linked PBzMA gels show reversible and discontinuous volume phase transition in [C(2)mim][NTf2] with the changes in temperature.