Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/99022
標題: The Effect of Maleated Polypropylene on the Non-Isothermal Crystallization Kinetics of Wood Fiber-Reinforced Polypropylene Composites
作者: Huang, Chung-Wei
Yang, Teng-Chun
Hung, Ke-Chang
Xu, Jin-Wei
Wu, Jyh-Horng
吳志鴻
關鍵字: cooling rate
crystallization kinetics
maleated polypropylene (MAPP)
non-isothermal crystallization
polypropylene (PP)
wood fiber
出版社: Polymers
摘要: The influence of maleated polypropylene (MAPP) on the non-isothermal crystallization behavior of wood fiber (WF)-reinforced PP composites (WPCs) was investigated by a differential scanning calorimeter (DSC). The results showed that MAPP as a nucleation agent accelerated the crystallization rate of the PP matrix in WPC under the cooling process. The corresponding crystallization kinetics and activation energy were further analyzed using the Avrami method, Avrami⁻Ozawa method, Kissinger method, and Friedman method. The results demonstrated that MAPP significantly changed the crystal growth mechanism of the PP matrix to heterogeneous nucleation for acicular and tabular crystal growth during the annealing step. A remarkably lower cooling rate can achieve a certain relative crystallinity degree at the unit crystallization time for WPC with 3 wt % MAPP (WPCM3). Similarly, the lowest crystallization activation energy was observed for the WPCM3 among all WPCs by the Kissinger method. Furthermore, based on the Friedman method, the addition of MAPP easily caused the PP matrix to crystallize in the WPC at the initial stage of relative crystallinity.
URI: http://hdl.handle.net/11455/99022
Appears in Collections:森林學系

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