کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
638465 | 1456166 | 2007 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Trimesoyl chloride crosslinked chitosan membranes for CO2/N2 separation and pervaporation dehydration of isopropanol
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Crosslinked chitosan membranes were prepared from interfacial crosslinking of chitosan membranes in trimesoyl chloride (TMC)/hexane. A higher degree of swelling was observed for the membrane with a higher degree of crosslinking when swollen in water at room temperature. Membranes were characterized with DSC and TGA, and a two-stage thermal decomposition mechanism was proposed. Pure gas permeation was performed with CO2 and N2 at room temperature, and CS-TMC-2 membrane had the best selectivity towards CO2/N2, with CO2 permeability of â¼163Â Barrers and the ideal separation factor of â¼42. Pervaporation was carried out for dehydration of isopropanol with the unconditioned and conditioned membranes, and CS-TMC-3 membrane showed the best pervaporation properties. The crosslinking-induced changes in the relaxation behavior and mobility/packing properties of polymer matrices were attributed to the changes in pervaporation and gas separation performances.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 306, Issues 1â2, 1 December 2007, Pages 36-46
Journal: Journal of Membrane Science - Volume 306, Issues 1â2, 1 December 2007, Pages 36-46
نویسندگان
Shude Xiao, Xianshe Feng, Robert Y.M. Huang,