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Thermal decomposition of natural fibers: Global kinetic modeling with nonisothermal thermogravimetric analysis
Author(s) -
Yao Fei,
Wu Qinglin,
Zhou Dingguo
Publication year - 2009
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.30439
Subject(s) - thermogravimetric analysis , activation energy , kinetic energy , fiber , thermal decomposition , materials science , natural fiber , thermodynamics , decomposition , thermal , degradation (telecommunications) , chemical process of decomposition , thermal analysis , polymer , composite number , composite material , polymer chemistry , chemistry , computer science , physics , organic chemistry , telecommunications , quantum mechanics
The modeling of thermal decomposition process of ten natural fibers commonly used in polymer composite industry was performed by assuming a global model occurring within the entire degradation range with consideration of fiber as one pseudocomponent. Málek method with activation energy values previously obtained was applied to the modeling process. Careful calculation and evaluation indicated that, within an acceptable error limit of 5%, RO( n > 1) model can be used to describe the degradation process of most selected fibers well. The other kinetic parameters used include activation energy range of 160–170 kJ/mol; parameter n in RO( n > 1) = (1 − α) n of 3–4; and ln A between 35 and 42 ln s −1 . Some condition limitations of the obtained model were also discussed. The model has practical significance in predicting fiber weight loss when the fiber is used in combination with engineering thermoplastics. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009