کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9684691 | 1456209 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sulphonated poly(ether ether ketone) copolymers: Synthesis, characterisation and membrane properties
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
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چکیده انگلیسی
Novel sulphonated poly(ether ether ketone) (PEEK) copolymers with controlled degree of sulphonation were synthesized by polycondensation reaction of varying ratios of silylated phenolphthalein, silylated biphenol, 5,5â²-carbonyl-bis(2-fluoro benzene sulphonate) (sulphonated 4,4â²-difluorobenzophenone) and 4,4â²-difluorobenzophenone. The structure of the copolymers was confirmed by using ATR and 1H NMR techniques. Molecular mass of these samples was determined by GPC. Thermal stability of the samples was evaluated using TGA technique. Methanol diffusion coefficients were in the range of 6.57 Ã 10â8 to 2.5 Ã 10â6 cm2/s. The proton conductivity of the membranes in the temperature range of 25-75 °C was found to be 10â5 to 10â3 S/cm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 261, Issues 1â2, 15 September 2005, Pages 27-35
Journal: Journal of Membrane Science - Volume 261, Issues 1â2, 15 September 2005, Pages 27-35
نویسندگان
R.T.S. Muthu Lakshmi, Jochen Meier-Haack, K. Schlenstedt, C. Vogel, V. Choudhary, I.K. Varma,