کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
639224 1456188 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Solvent power and depressurization rate effects in the formation of polysulfone membranes with CO2-assisted phase inversion method
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Solvent power and depressurization rate effects in the formation of polysulfone membranes with CO2-assisted phase inversion method
چکیده انگلیسی

Herein we report the preparation of polysulfone (PS) membranes using a CO2-assisted phase inversion method. The effect of the solvent affinity and depressurization rate in the morphology and in the performance in terms of pure water flux of the membranes has been investigated. Different casting solutions were prepared using the following solvents: methylpyrrolidone, dimethylformamide, dimethylacetamide, chloroform, dimethylsulfoxide and dimethylpropionamide. The morphologies of the membranes obtained by fast (less than 1 min) and slow (approximately 1 h) depressurization have been compared. These parameters had a significant effect upon the pore size and on the water fluxes of the membranes. A schematic ternary diagram of the system polymer–solvent–CO2 is discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 283, Issues 1–2, 20 October 2006, Pages 244–252
نویسندگان
, , ,