کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
674986 1459584 2010 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Kinetic analysis of thermal degradation of poly(ethylene glycol) and poly(ethylene oxide)s of different molecular weight
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Kinetic analysis of thermal degradation of poly(ethylene glycol) and poly(ethylene oxide)s of different molecular weight
چکیده انگلیسی
The effect of molecular weight on thermal characteristics and thermal degradation of poly(ethylene glycol) (PEG) and poly(ethylene oxide)s (PEO) was investigated by differential scanning calorimetry, FT-IR spectroscopy and dynamic thermogravimetry. Kinetic analysis of the non-isothermal degradation was performed using isoconversional (Flynn-Wall-Ozawa, Kissinger-Akahira-Sunose and Friedman) and the invariant kinetic parameters method. The empirical kinetic triplets (E, A, and f(α)) as well as the rate constants have been calculated. The relation between the heating rate, the degradation rate and molecular weight for all investigated samples has been established.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 498, Issues 1–2, 20 January 2010, Pages 71-80
نویسندگان
, , , ,