کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5186688 1381111 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Gas diffusion and solubility in He+-irradiated asymmetric polyimide membranes
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Gas diffusion and solubility in He+-irradiated asymmetric polyimide membranes
چکیده انگلیسی

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 °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 × 1015 or 3 × 1015 ions/cm2 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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 47, Issue 19, 7 September 2006, Pages 6585-6591
نویسندگان
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