Theory and practice in the thermoanalytical kinetics of complex processes: Application for the isothermal and non-isothermal thermal degradation of HDPE

被引：44

作者：

Budrugeac, P. ^{[1
]}

机构：

[1] ICPE CA, Natl Inst Res & Dev Elect Engn, Bucharest 030138, Romania

来源：

THERMOCHIMICA ACTA | 2010年 / 500卷 / 1-2期

关键词：

TG and DTG curve fitting method; HDPE; Thermal degradation; Non-isothermal kinetics; Isothermal kinetics; SOLID-STATE REACTIONS; MULTIVARIATE NONLINEAR-REGRESSION; MODEL-FREE KINETICS; THERMOOXIDATIVE DEGRADATION; ACTIVATION-ENERGY; DECOMPOSITION REACTIONS; ISOCONVERSIONAL METHODS; COMPUTATIONAL ASPECTS; DTG CURVE; PARAMETERS;

D O I：

10.1016/j.tca.2009.12.007

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The criterion according to which the best mechanism of a complex process and the associated kinetic parameters correspond to the best fitting of TG and DTG curves recorded at several heating rates is discussed. The main problem is if the application of such a criterion for a complex process will lead to the mechanism and corresponding kinetic parameters to be used for predictions. To this end, the thermal degradation of HDPE has been investigated by TG/DTG + DSC simultaneous analysis performed in Ar flow, at five heating rates as well as in four quasi-isothermal conditions. An algorithm for correct determination of the mechanism and the corresponding kinetic parameters of a complex process from non-isothermal and quasi-isothermal data was suggested. (C) 2009 Elsevier BM. All rights reserved.

引用

页码：30 / 37

页数：8

共 73 条

[1] Comparison of different non-linear evaluation methods in thermal analysis [J].

Anderson, HL ;

Kemmler, A ;

Strey, R .

THERMOCHIMICA ACTA, 1996, 271 :23-29

[2] Thermogravimetric kinetics of polyethelyne degredation over silicoaluminophosphate [J].

Araujo, AS ;

Fernandes, VJ ;

Fernandes, GJT .

THERMOCHIMICA ACTA, 2002, 392 :55-61

[3] Kinetic study on the thermal degradation of polypropylene and polyethylene [J].

Bockhorn, H ;

Hornung, A ;

Hornung, U ;

Schwaller, D .

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, 1999, 48 (02) :93-109

[4] Stocktaking in the kinetics cupboard [J].

Brown, ME .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2005, 82 (03) :665-669

[5] Computational aspects of kinetic analysis Part A: The ICTAC kinetics project-data, methods and results [J].

Brown, ME ;

Maciejewski, M ;

Vyazovkin, S ;

Nomen, R ;

Sempere, J ;

Burnham, A ;

Opfermann, J ;

Strey, R ;

Anderson, HL ;

Kemmler, A ;

Keuleers, R ;

Janssens, J ;

Desseyn, HO ;

Li, CR ;

Tang, TB ;

Roduit, B ;

Malek, J ;

Mitsuhashi, T .

THERMOCHIMICA ACTA, 2000, 355 (1-2) :125-143

[6] Application of isoconversional and multivariate non-linear regression methods for evaluation of the degradation mechanism and kinetic parameters of an epoxy resin [J].

Budrugeac, P. ;

Segal, E. .

POLYMER DEGRADATION AND STABILITY, 2008, 93 (06) :1073-1080

[7] Kinetics of the complex process of thermo-oxidative degradation of poly(vinyl alcohol) [J].

Budrugeac, P. .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2008, 92 (01) :291-296

[8] On the use of Diefallah's composite integral method for the non-isothermal kinetic analysis of heterogeneous solid-gas reactions [J].

Budrugeac, P ;

Segal, E .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2005, 82 (03) :677-680

[9] Some methodological problems concerning the kinetic analysis of non-isothermal data for thermal and thermo-oxidative degradation of polymers and polymeric materials [J].

Budrugeac, P .

POLYMER DEGRADATION AND STABILITY, 2005, 89 (02) :265-273

[10] Application of model-free and multivariate non-linear regression methods for evaluation of the thermo-oxidative endurance of a recent manufactured parchment [J].

Budrugeac, P. .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2009, 97 (02) :443-451

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