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Spectroscopic study of ordered structures of atactic poly(methyl methacrylate) freeze-extracted from poly(ethylene glycol) solution

被引：13
作者：
Chen, JL
Zheng, GS
Xu, L
Zhang, J
Lu, Y
Xue, G
Yang, YS
机构：
[1] Nanjing Univ, Dept Chem, State Key Lab Funct Polymer Mat Adsorpt & Separat, Nanjing 210093, Peoples R China
[2] E China Univ Sci & Technol, Petrochem Inst, Shanghai 200540, Peoples R China
来源：
POLYMER | 2001年 / 42卷 / 09期
基金：
中国国家自然科学基金;
关键词：
atactic poly(methyl methacrylate); ordered structure; self-aggregate;
D O I：
10.1016/S0032-3861(00)00749-7
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The conformation of atactic poly(methyl methacrylate) (a-PMMA) freeze-extracted from solvents of various molecular size was investigated by IR and Raman spectroscopy. IR studies showed that self-aggregates and partial helix conformation of polymer chain existed in the annealed a-PMMA sample freeze-extracted from a-PMMA/poly(ethylene glycol) (PEG) solution. Temperature dependence of IR I-1240 (cm-1)/I-1270 (cm-1), ratio indicated that a-PMMA freeze-extracted from PEG had lower backbone conformational energy than that from dioxane, FT-Raman spectroscopies showed that strong interaction existed between a-PMMA and dioxane, while little solute-solvent interaction existed in the a-PMMA/PEG system. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：4459 / 4462
页数：4
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