کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
639386 1456192 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
SPEEK/PPSU-based organic–inorganic membranes: proton conducting electrolytes in anhydrous and wet environments
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
SPEEK/PPSU-based organic–inorganic membranes: proton conducting electrolytes in anhydrous and wet environments
چکیده انگلیسی

A telechelic organic–inorganic polymer (SiPPSU) where –SiPh(OH)2 groups are covalently linked to the polymeric chain of polyphenylsulfone (PPSU) was prepared and characterized. The polymer was sulfonated up to a degree of sulfonation (DS) equal to 2 (SiSPPSU), then used to prepare blends with sulfonated polyetheretherketone (SPEEK) having DS = 0.9 in 5 and 10 wt.% concentration. The synthesized polymers and the blends were characterized by ATR/FT-IR spectroscopy. Membranes were prepared with these materials and their proton conductivity was measured using electrochemical impedance spectroscopy (EIS). The formation of the blends substantially altered the physicochemical characteristics of SPEEK: the membrane prepared with the blend at the concentration of 5 wt.% exhibited high and stable conductivity values at 120 °C: both when dry (σ = 6.1 × 10−3 S/cm) and wet conditions (σ = 6.4 × 10−2 S/cm for a 50% water uptake), hence, being suitable for application as electrolyte in intermediate temperature polymer electrolyte membrane fuel cells (PEMFCs).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 279, Issues 1–2, 1 August 2006, Pages 186–191
نویسندگان
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