Model Based and Model Free Methods for Kinetic Study of Thermal Degradation of Cellulose Thiophosphinite Derivative

被引：0

作者：

Malhotra, Deepa ^{[1
]}

Kumar, Krishan ^{[1
]}

Dahiya, J. B. ^{[1
]}

机构：

[1] Guru Jambheshwar Univ Sci & Technol, Dept Chem, Hisar 125001, Haryana, India

来源：

ASIAN JOURNAL OF CHEMISTRY | 2009年 / 21卷 / 05期

关键词：

Cellulose diethylamino ammoniumthiophosphinite; Thermal degradation; Kinetics; Char; Coats-Redfern method; THERMOGRAVIMETRIC DATA; COTTON;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Cellulose diethylamino ammoniumthiophosphinite (CEAAT) has been chosen for a study of its degradation behaviour from ambient temperature to 700 degrees C using thermogravimetry. Cellulose diethylamino ammoniumthiophosphinite when heated in helium atmosphere, gives rise to higher char yield (45 %) as compared to cellulose (9.1 %) at 700 degrees C. Kinetics was studied using model based and model free methods for degradation of CEAAT up to 700 degrees C. After taking into account the values of activation energy and pre-exponential factor both obtained by model free methods and comparing these values with the values obtained by model based method. The diffusion controlled and random nucleation type mechanisms are found the most probable during thermal degradation of CEAAT.

引用

页码：4104 / 4112

页数：9

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