Assessment of the error of the pre-exponential factor obtained from the isoconversional plot and the single heating rate plot for dynamic thermogravimetric measurement of polymer degradation

被引：10

作者：

Gao, ZM ^{[1
]}

Amasaki, I

Kaneko, T

Nakada, M

机构：

[1] Beijing Inst Technol, Sch Sci, Dept Chem, Beijing 100081, Peoples R China

[2] Chiba Inst Technol, Dept Elect Engn, Narashino, Chiba 2750016, Japan

[3] Chiba Inst Technol, Dept Chem, Narashino, Chiba 2750023, Japan

来源：

POLYMER DEGRADATION AND STABILITY | 2004年 / 83卷 / 01期

关键词：

arrhenius equation; pre-exponential factor; kinetics; nth-order model; reaction order;

D O I：

10.1016/S0141-3910(03)00224-6

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 [高分子化学与物理]; 080501 [材料物理与化学]; 081704 [应用化学];

摘要：

We present an assessment on error of the pre-exponential factor estimated from the isoconversional plot and the single heating rate plot for dynamic thermogravimetric measurement. It is found that the pre-exponential factor obtained at the correct reaction order usually has about -10% error in value. The use of a wrong reaction order can lead to a variation in the value of the pre-exponential factor by several times, sometimes even several hundred times. Curve simulation is a careful method for obtaining kinetics parameter values. Only perfect agreement of simulation curve with the experimental one can give the correct kinetic parameters. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：67 / 70

页数：4

共 12 条

[1]

Akihira T., 1971, RES REPORT CHIBA I T, V16, P22

[2]

Some problems concerning the evaluation of non-isothermal kinetic parameters - Solid-gas decompositions from thermogravimetric [J].

Budrugeac, P ;

Petre, AL ;

Segal, E .

JOURNAL OF THERMAL ANALYSIS, 1996, 47 (01) :123-134

[3]

KINETIC PARAMETERS FROM THERMOGRAVIMETRIC DATA [J].

COATS, AW ;

REDFERN, JP .

NATURE, 1964, 201 (491) :68-&

[4]

Thermal degradation of poly(methyl methacrylate) (PMMA): modelling of DTG and TG curves [J].

Ferriol, M ;

Gentilhomme, A ;

Cochez, M ;

Oget, N ;

Mieloszynski, JL .

POLYMER DEGRADATION AND STABILITY, 2003, 79 (02) :271-281

[5]

The 'temperature integral' - Its use and abuse [J].

Flynn, JH .

THERMOCHIMICA ACTA, 1997, 300 (1-2) :83-92

[6]

A thermogravimetric study on thermal degradation of polyethylene [J].

Gao, ZM ;

Amasaki, I ;

Nakada, M .

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, 2003, 67 (01) :1-9

[7]

A kinetic study of thermal degradation of polypropylene [J].

Gao, ZM ;

Kaneko, T ;

Amasaki, I ;

Nakada, M .

POLYMER DEGRADATION AND STABILITY, 2003, 80 (02) :269-274

[8]

A consideration of errors and accuracy in the isoconversional methods [J].

Gao, ZM ;

Nakada, M ;

Amasaki, I .

THERMOCHIMICA ACTA, 2001, 369 (1-2) :137-142

[9]

An integral method of nonisothermal kinetic analysis [J].

Lyon, RE .

THERMOCHIMICA ACTA, 1997, 297 (1-2) :117-124

[10]

Ortega A, 1996, THERMOCHIM ACTA, V283, P29

← 1 2 →