کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5210027 | 1382870 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and characterization of tetra-imidazolium hydroxides poly(fluorenylene ether sulfone) anion exchange membranes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Anion exchange membranes of poly(fluorenylene ether sulfone) containing imidazolium hydroxide-functionalized fluorenyl groups were synthesized by sequential polycondensation, chloromethylation, substitution with imidazolium and ion exchange. They showed elevated molecular weight, high solubility in polar aprotic solvents and strong chemically and thermally stability in comparison to alkyl quaternary ammonium-functionalized polymers. Different levels of substitution and ion exchange were tested; the resulting ionomer membranes showed high ion exchange capacities (IECs) of up to 1.96 mmol gâ1. The imidazolium-functionalized copolymer membranes showed lower water affinity and excellent chemical stability in alkaline conditions. They exhibited hydroxide conductivity above 10â2 S cmâ1 at room temperature and outstanding chemical stability for up to 7 days without significant losses of ion conductivity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reactive and Functional Polymers - Volume 73, Issue 9, September 2013, Pages 1299-1305
Journal: Reactive and Functional Polymers - Volume 73, Issue 9, September 2013, Pages 1299-1305
نویسندگان
Md. Awlad Hossain, Youngdon Lim, Soonho Lee, Hohyoun Jang, Seongyoung Choi, Taehoon Hong, Lei Jin, Whan Gi Kim,