کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
637158 | 1456141 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Alternatively chitosan sulfate blending membrane as methanol-blocking polymer electrolyte membrane for direct methanol fuel cell
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A series of blending chitosan sulfate membranes have been developed by grafting the chitosan monomers with sulfonic groups, then cross-linking the polymers from the bond reactions between the sulfonic groups in the chitosan sulfate and the amido groups in the pure chitosan monomers. Mechanical characterizations demonstrated that the dimensional swelling as well as the methanol crossover of the chitosan membranes were suppressed successfully by the polymer blending, with area swelling value decreased from 55.1% to 39.3% and methanol diffusion coefficient decreased from 1.0 Ã 10â6 cm2 sâ1 of pure chitosan to 4.7 Ã 10â7 cm2 sâ1 of the membrane with chitosan sulfate content of â¼9.1 wt% (CCSM 110). The thermal analysis indicated that the blending chitosan sulfate membranes were structure stable below 100 °C. The blending membrane showed the best conductivity (0.03 S cmâ1 at 80 °C). The methanol permeability of CCSM 110 was much lower compared with that of Nafion 112 (1.9 Ã 10â6 cm2 sâ1).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 337, Issues 1â2, 15 July 2009, Pages 318-323
Journal: Journal of Membrane Science - Volume 337, Issues 1â2, 15 July 2009, Pages 318-323
نویسندگان
Yan Xiang, Meng Yang, Zhibin Guo, Zheng Cui,