کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
633380 | 1456026 | 2015 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and properties of highly branched star-shaped sulfonated block poly(arylene ether)s as proton exchange membranes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis and properties of highly branched star-shaped sulfonated block poly(arylene ether)s as proton exchange membranes Synthesis and properties of highly branched star-shaped sulfonated block poly(arylene ether)s as proton exchange membranes](/preview/png/633380.png)
چکیده انگلیسی
Star-shaped sulfonated block copoly(ether ketone)s exhibit excellent properties for use as proton exchange membranes (PEMs). However, very few investigations of the use of highly branched star-shaped sulfonated block polymers as PEMs have been reported. In this work, two types of highly branched star-shaped sulfonated block poly(arylene ether)s with 6% branching agent were synthesized via direct polycondensation reactions of a trifunctional core (branching agent) with sulfonated 4,4â²-difluorobenzophenone, bisphenol fluorene, and 4,4â²-difluorodiphenyl sulfone. The properties of a polymer with hydrophilic segments surrounded by hydrophobic segments (P1) and a polymer with hydrophobic segments surrounded by hydrophilic segments (P2) were investigated. The block polymer P1 exhibited better oxidative stability (332 min) and dimensional stability (<12%) than the highly branched sulfonated random polymer (P3), whereas P2 exhibited higher proton conductivity (0.40 S cmâ1 at 80 °C) and water uptake (59.1% at 80 °C) than P3. The highly branched star-shaped sulfonated block poly(arylene ether)s exhibit greater potential than P3 for use as PEMs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 473, 1 January 2015, Pages 226-236
Journal: Journal of Membrane Science - Volume 473, 1 January 2015, Pages 226-236
نویسندگان
Huixiong Xie, Dan Tao, Xiongzhi Xiang, Yangxing Ou, Xiaojun Bai, Lei Wang,