کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1294314 973610 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and properties of sulfonated poly(arylene ether phosphine oxide)s for proton exchange membranes
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Synthesis and properties of sulfonated poly(arylene ether phosphine oxide)s for proton exchange membranes
چکیده انگلیسی

A series of sulfonated poly(arylene ether phosphine oxide)s (sPAEPO) were prepared by direct polycondensation of sulfonated bis(4-fluorophenyl)phenyl phosphine oxide and bis(4-fluorophenyl)phenyl phosphine oxide with various diphenol-type monomers. The resulting ionomers show high molecular weight and excellent thermal stability. The bisphenol moieties of sPAEPO greatly affect the properties. sPAEPO-NA, -Bis A, -BP, and -6F show excellent dimensional stability. However, sPAEPO-DB and -HQ indicate abrupt swelling even at 80 and 90 °C, respectively, unsuitable for proton exchange membranes. In contrast, sPAEPO-6F with the lowest swelling exhibits the highest conductivity of 7.68 × 10−2 S cm−1 among all the sPAEPO, close to that of Nafion 117. Besides, sPAEPO-NA and -Bis A show a worse oxidative stability than other sPAEPO (sPAEPO-Bis A, -BP, -HQ, and -6F) due to the naphthalene ring and the isopropylidene unit in the backbone, respectively. Contrary to sPAEPO-Bis A and -BP, sPAEPO-NA and -6F exhibit well connective ionic domains owing to the high hydrophobic nature of the naphthalene ring and hexafluoroisopropylidene moieties. The connected ionic domains provide sPAEPO-NA and -6F with higher proton conductivity in comparison with sPAEPO-Bis A and -BP. In conclusion, sPAEPO-6F has the best comprehensive properties among all the sPAEPO, indicating a promising prospect in proton exchange membrane applications.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 188, Issue 1, 1 March 2009, Pages 57–63
نویسندگان
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