Deformation behaviour of styrene/butadiene star block copolymer/hPS blends: influence of morphology

被引：14

作者：

Adhikari, R ^{[1
]}

Michler, GH ^{[1
]}

Godehardt, R ^{[1
]}

Ivan'kova, EM ^{[1
]}

机构：

[1] Univ Halle Wittenberg, Inst Sci Mat, D-06099 Halle Saale, Germany

来源：

POLYMER | 2003年 / 44卷 / 26期

关键词：

styrene/butadiene block copolymer; morphology; micromechanical mechanism;

D O I：

10.1016/j.polymer.2003.10.040

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 influence of morphology on micromechanical deformation behaviour of blends consisting of a lamellar forming styrene/butadiene star block copolymer and polystyrene homopolymer (hPS) was studied by transmission electron microscopy (TEM). The pure star block copolymer and the microphase separated blends revealing lamellar structure with polystyrene (PS) lamella thickness in the range of about 20 nm showed homogeneous plastic deformation of the PS lamellae. The macrophase separated blends with PS particles in lamellar matrix exhibited debonding at the particle-matrix interface associated with extensive plastic deformation of the surrounding matrix. The blends containing PS matrix deformed via crazing. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：8041 / 8051

页数：11

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