کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1486435 1510564 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Glass transition and ionic conduction in plasticized and doped ionomers
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Glass transition and ionic conduction in plasticized and doped ionomers
چکیده انگلیسی

The relationship between ionic conduction and matrix glass transition was investigated in selected plasticized and doped poly((ethylene glycol)n-co-5-sulfoisophthalate lithium) ionomers. Plasticization with a poly(ethylene glycol) oligomer significantly increases the ionic conductivity, despite a decrease in lithium concentration. Doping with LiClO4 leads to much lower conductivity, despite the increase in Li+ content. These observations were reconciled by considering the corresponding change in ionomer glass transition temperature (Tg), and it was found that ionomers with different plasticizer/dopant levels exhibit similar conductivity at constant T − Tg. The fact that Tg plays such a strong role suggests that Li+ ion mobility is controlled by segmental motion of PEO.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 351, Issues 33–36, 15 September 2005, Pages 2825–2830
نویسندگان
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