کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5206400 1502953 2014 31 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermogravimetric study of the kinetics of formation of poly(para-phenylene vinylene) by thermal conversion of a sulfonium precursor
ترجمه فارسی عنوان
مطالعه حرارتی سنجی از سینتیک تشکیل پلی (پارا فنیلن وینیلن) با تبدیل گرماسیونی پیش ماده سولفونیم
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی
Poly(p-phenylene vinylene) (PPV) conjugated polymer films were prepared by thermolytic conversion of poly[p-phenylene (tetrahydrothiophenium)ethylene chloride] precursor films, at different temperatures. The reaction kinetics was investigated by isothermal thermogravimetry. Each conversion temperature was found to be associated with an asymptotic value of mass loss. A mathematical analysis relating molar conversion to asymptotic mass loss was derived. The activation energy for dehydrochlorination of the poly(p-phenylene chloroethylene) intermediate was found to be 59 ± 7 kJ mol−1, significantly lower than that for the dehydrochlorination of poly(vinyl chloride) (PVC). The reaction order, on the other hand, was nearly first-order, similar to that for PVC. Film processing conditions that gave conjugated polymer films free of carbonyl defects were identified.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Testing - Volume 37, August 2014, Pages 170-178
نویسندگان
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