کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
636973 883670 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Plasticization of ultra-thin polysulfone membranes by carbon dioxide
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Plasticization of ultra-thin polysulfone membranes by carbon dioxide
چکیده انگلیسی

Plasticization of gas separation membranes by carbon dioxide permanently alters their performance and increases the possibility of membrane failure. This is amplified in ultra-thin composite membranes, where the active polymeric layer is less than 2 μm. Here, the plasticization influence of CO2 is measured on ultra-thin polysulfone composite membranes for a range of active layer thicknesses, at four temperatures. The resulting permeability–pressure isotherms demonstrate plasticization occurs for all thicknesses at pressures lower than has been reported for dense membranes. These isotherms were quantitatively fitted with an expanded dual-sorption model that takes into account plasticization of the membrane. The plasticization potential of CO2 for polysulfone was found to increase with reduced active layer thickness. Similarly, the plasticization potential of CO2 was found to decrease with temperature. These results are consistent with similar research that shows that thin films behave differently to dense membranes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 346, Issue 1, 1 January 2010, Pages 208–214
نویسندگان
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