کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7745757 | 1498268 | 2015 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of high molecular weight sulfonated poly(arylene ether sulfone) copolymer without azeotropic reaction
ترجمه فارسی عنوان
سنتز کوپلیمر پلی استر (سولفونیک آرویلن اتر سولفون) با مولکولی بالا بدون واکنش آسئوتروپیک
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
Currently, most sulfonated poly(arylene ether sulfone) (s-PAES) polymers are synthesized using a solvent mixture consisting of toluene and dimethylacetamide (DMAc) by two successive reactions, namely azeotropic water removal, followed by nucleophilic substitution. In this study, a novel method for the synthesis of s-PAES polymers has been developed, where alcohols such as methanol, ethanol, or 2-propanol are used along with DMAc as the co-solvent in the place of toluene that is used in the conventional synthesis of s-PAES. Moreover, the synthesis method used in this study involves only one step, namely the polymerization at 160 °C and does not require the azeotropic water distillation step at 140 °C. The new synthesis method was found to yield s-PAES polymers with a higher molecular weight in a shorter reaction time compared to the conventional polymerization method. Further, membrane electrode assemblies (MEA) were fabricated using the synthesized s-PAES polymer membranes, in order to evaluate the performance of the membranes in polymer electrolyte membrane fuel cells (PEMFCs). The results indicate that the s-PAES membranes synthesized using the method proposed in this study have a great potential for use as PEMFC membranes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 275, July 2015, Pages 92-96
Journal: Solid State Ionics - Volume 275, July 2015, Pages 92-96
نویسندگان
So Young Lee, Yeonhye Kwon, Bo Hyun Kim, Jieon Chae, Jong Hyun Jang, Dirk Henkensmeier, Sung Jong Yoo, Jin Young Kim, Hyoung-Juhn Kim,