Non-isothermal crystallization kinetics of cork-polymer composites for injection molding
authors da Silva, SPM; Lima, PS; Oliveira, JM
nationality International
journal JOURNAL OF APPLIED POLYMER SCIENCE
author keywords compatibilization; composites; crystallization; differential scanning calorimetry (DSC); kinetics
keywords REINFORCED POLYPROPYLENE COMPOSITES; THERMAL-PROPERTIES; FIBER/POLYPROPYLENE COMPOSITES; RECYCLED POLYPROPYLENE; WOOD FLOUR; FIBER; PARAMETERS; BIOCOMPOSITES; BEHAVIOR; LIGNIN
abstract The non-isothermal crystallization behavior of cork-polymer composites (CPC) based on polypropylene (PP) matrix was studied. Using differential scanning calorimetry (DSC), the crystallization behavior of CPC with 15 wt % cork powder at different cooling rates (5, 10, 15, and 20 degrees C/min) was studied. The effect of a coupling agent based on maleic anhydride was also analyzed. A composite (PPg) containing polypropylene grafted maleic anhydride (PPgMA) and PP was prepared for comparison purposes. Crystallization kinetic behavior was studied by Avrami, Ozawa, Liu, and Kissinger methods. The Ozawa method fails to describe the behavior of these composites. Results show that cork powder surface acts as a nucleating agent during non-isothermal crystallization, while the addition of PPgMA decreases the crystallization rate. (c) 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44124.
publisher WILEY-BLACKWELL
issn 0021-8995
year published 2016
volume 133
issue 42
digital object identifier (doi) 10.1002/app.44124
web of science category Polymer Science
subject category Polymer Science
unique article identifier WOS:000380723800019
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journal impact factor 1.901
5 year journal impact factor 1.760
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