کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
674596 1459569 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study on thermal decomposition of calix[4]arene and its application in thermal stability of polypropylene
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Study on thermal decomposition of calix[4]arene and its application in thermal stability of polypropylene
چکیده انگلیسی

Thermal decomposition kinetics of calix[4]arene (C4) was investigated using thermogravimetric analysis (TGA) and derivative of TG curve (DTG). TG experiments were carried out under static air atmosphere with nominal heating rates of 1.0, 2.5, 5.0 and 10.0 K/min. Model-fitting methods and model-free methods such as Friedman and Ozawa–Flynn–Wall methods were employed to evaluate the kinetic parameters such as activation energy (Ea), exponential factor (ln A) and reaction order (n). To determine the antioxidant property of C4 the non-isothermal kinetics of polypropylene (PP) with C4 as additive was studied. The FTIR, ESR and 13C NMR CP-MAS techniques were used to propose the decomposition mechanism of C4 in the presence of PP.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 515, Issues 1–2, 10 March 2011, Pages 24–31
نویسندگان
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