کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1484755 991642 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation and the proton conductivity of chitosan/poly(vinyl phosphonic acid) complex polymer electrolytes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Preparation and the proton conductivity of chitosan/poly(vinyl phosphonic acid) complex polymer electrolytes
چکیده انگلیسی

This study describes the preparation and proton conductivity of novel polymer complex electrolytes consisting of chitosan and poly(vinylphosphonic acid), PVPA. The materials were prepared via in situ polymerization of vinyl phosphonic acid in the presence of chitosan at various monomer feed ratios with respect to d-glucosamine repeat unit. Homogeneous materials were produced and they were extensively characterized for their compositions by elemental analysis (EA), thermal properties by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) and the morphology by X-ray diffraction (XRD). The complexation of chitosan/PVPA via proton exchange reactions was confirmed by Fourier transform infrared (FT-IR). The methanol permeability of CHPVPA5 was lower than Nafion® 115. The water/methanol uptake was measured and the results showed that solvent absorption of the materials increased with increasing PVPA content in the matrix. The temperature dependence of the proton conductivity of the complex electrolytes follows VTF behavior at higher x. Proton conductivity of CHPVPA5 was measured to be approximately 3 × 10−5 S/cm at 120 °C in the anhydrous state.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 354, Issue 30, 15 July 2008, Pages 3637–3642
نویسندگان
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