Glass transition induced by solvent desorption for statistical MMA/nBMA copolymers -: Influence of copolymer composition

被引：28

作者：

Saby-Dubreuil, AC

Guerrier, B

Allain, C

Johannsmann, D

机构：

[1] Univ Paris 11, Lab FAST, CNRS, F-91405 Orsay, France

[2] Max Planck Inst Polymer Res, D-55128 Mainz, Germany

来源：

POLYMER | 2001年 / 42卷 / 04期

关键词：

methyl methacrylate/n-butyl methacrylate copolymer films; glass transition; solvent desorption;

D O I：

10.1016/S0032-3861(00)00539-5

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

An experimental study of the glass transition induced by solvent desorption has been performed for a series of Methyl methacrylate (MMA)ln-butyl methacrylate (nBMA) statistical copolymer films. The glass transition temperature of the dry homopolymers, PMMA and PnBMA, are, respectively, about 105 and 7 degreesC above the temperature of the experiment, so that the glass transition domain can be analyzed in detail by varying the solvent concentration and the copolymer composition. A strong coupling was found between drying dynamic and stress relaxation. In particular, the quantitative analysis of the desorption isotherms based on the Leibler-Sekimoto approach led to a bulk modulus K that increases as the proportion of nBMA increases, contrary to the behavior of dry annealed samples. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：1383 / 1391

页数：9

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