کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1400796 | 984656 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Theoretical study on sulfonated and phosphonated poly[(aryloxy)phosphazenes] as proton-conducting membranes for fuel cell applications
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Theoretical study on sulfonated and phosphonated poly[(aryloxy)phosphazenes] as proton-conducting membranes for fuel cell applications Theoretical study on sulfonated and phosphonated poly[(aryloxy)phosphazenes] as proton-conducting membranes for fuel cell applications](/preview/png/1400796.png)
چکیده انگلیسی
Polyphosphazenes are considered to be more useful as proton-conducting membranes than Nafion due to their low methanol permeability, low water swelling ratios, satisfactory mechanical properties, and conductivities comparable to those of Nafion. In this work, compounds 1-6, six polyphosphazenes with different side groups, were designed and calculated. Structural parameters, proton affinities and water adsorptions were obtained on the basis of the optimized geometrical structures. Our calculations were in agreement with experimental results. It was found that the proton conductivities of the sulfonated poly[(aryloxy)phosphazenes] (R1SO3H) are higher than those of the phosphonated ones (R1PO3H2), while the phosphonated poly[(aryloxy)phosphazenes] will retain water better at higher temperature than the sulfonated ones. The electron-withdrawing substituent of R2 is beneficial to proton conductivities and water adsorptions of both sulfonated and phosphonated poly[(aryloxy)phosphazenes].
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Polymer Journal - Volume 45, Issue 8, August 2009, Pages 2391-2394
Journal: European Polymer Journal - Volume 45, Issue 8, August 2009, Pages 2391-2394
نویسندگان
Xiaobing Li, Shijun Liao, Jinhua Piao, Xueye Wang,