MORPHOLOGICAL ARRANGEMENTS OF BLOCK COPOLYMERS THAT RESULT IN LOW GAS-PERMEABILITY

被引：20

作者：

CSERNICA, J ^{[1
]}

BADDOUR, RF ^{[1
]}

COHEN, RE ^{[1
]}

机构：

[1] MIT,DEPT CHEM ENGN,CAMBRIDGE,MA 02139

来源：

MACROMOLECULES | 1990年 / 23卷 / 05期

关键词：

Gases - Diffusion - Mathematical Techniques - Integration - Membranes - Permeability - Polybutadienes - Polystyrenes - Permeability;

D O I：

10.1021/ma00207a030

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Gas permeability coefficients for several gases (Ar, N2, CO2, CH4) were measured at 25 °C in two polystyrene/polybutadiene block copolymer systems. One possesses a morphology of alternating lamellae that are highly oriented and perpendicular to the permeation direction; the second contains spheres of polybutadiene in a polystyrene matrix. The measured permeabilities of these two materials are dominated by the behavior of the low permeability polystyrene component. Models are presented to describe transport in these microphase-separated systems and to facilitate comparisons with the transport behavior of other two-component polymer systems. © 1990, American Chemical Society. All rights reserved.

引用

页码：1429 / 1433

页数：5

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