Gas diffusion and solubility in He+-irradiated asymmetric polyimide membranes

被引：11

作者：

Sannomiya, A.

Nagaoka, S.

Suzuki, Y.

Iwaki, M.

Kawakami, H. ^{[1
]}

机构：

[1] Tokyo Metropolitan Univ, Dept Appl Chem, Hachioji, Tokyo 1920397, Japan

[2] Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

来源：

POLYMER | 2006年 / 47卷 / 19期

关键词：

ion irradiation; gas separation membrane; asymmetric membrane;

D O I：

10.1016/j.polymer.2006.07.032

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, the gas diffusion and solubility of the asymmetric polyimide membrane irradiated by He ions were investigated using a high vacuum apparatus equipped with a Baratron absolute pressure gauge at 76 cmHg and 35 degrees C. Specifically, we estimated their effects on the gas permeation properties of the asymmetric membranes. The asymmetric polyimide membranes were prepared by a dry-wet phase inversion process, and the surface skin layer on the membrane was irradiated by He ions at fluences of 1 x 10(15) or 3 x 10(15) ions/cm(2) at 150 keV. We demonstrated that the gas diffusion had a significant influence on the gas permeability and selectivity of the He+-irradiated asymmetric membrane. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：6585 / 6591

页数：7

共 20 条

[1] Micro-Raman study of the carbonization of polyimide induced by swift heavy ion irradiations [J].