Structure and properties of the mesophase of syndiotactic polystyrene. II. Effect of stepwise extraction on the preparation of the mesophase

被引：18

作者：

Rani, DA ^{[1
]}

Yamamoto, Y ^{[1
]}

Mohri, S ^{[1
]}

Sivakumar, M ^{[1
]}

Tsujita, Y ^{[1
]}

Yoshimizu, H ^{[1
]}

机构：

[1] Nagoya Inst Technol, Dept Mat Sci & Engn, Nagoya, Aichi 4668555, Japan

来源：

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 2003年 / 41卷 / 03期

关键词：

syndiotactic; polystyrene; clathrate form; mesophase; extraction; conformational order; polymorphism;

D O I：

10.1002/polb.10375

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

In this study, a novel stepwise extraction method has been examined. The guest molecules housed between the helices of the clathrate 8 form of syndiotactic polystyrene can be removed completely with this method. A systematic study of the preparation of a solvent-free mesophase (emptied clathrate) membrane, its helical and residual solvent contents, and its structural transformations has been performed. In this first attempt, an enhancement in the TTGG helical content has been observed in the extracted membrane, and a conceptual mechanism is proposed. (C) 2002 Wiley Periodicals, Inc.

引用

页码：269 / 273

页数：5

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