Investigation of nonisothermal crystallization of hydroxyapatite/ethylene-vinyl acetate (HA/EVA) composite

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Title: Investigation of nonisothermal crystallization of hydroxyapatite/ethylene-vinyl acetate (HA/EVA) composite
Author(s): Wang, Yanying; Zhang, Li; Zhou, Song; Huang, Di; Morsi, Yos; Gao, Shibo; Gong, Mei; Li, Yubao
Abstract: Hydroxyapatite/ethylene-vinyl acetate (HA/EVA) composites were prepared by injection molding and characterized by X-ray diffraction (XRD) and attenuated total multiple reflection infrared (ATR-IR) spectroscopy. The nonisothermal crystallization behavior of HA/EVA composites at different cooling rates and with different HA content were examined by differential scanning calorimetry (DSC). The results exhibit the occurrence of interaction between HA and EVA, and the HA particles in EVA matrix act as effective nucleation agent. The addition of HA influences the mechanism of nucleation and growth of EVA crystallites. HA particles, as nucleus, are efficient to promote EVA crystallization at early stage but prevent EVA crystal growth in the late stage. The EVA crystallization in the composite is mainly through heterogeneous nucleation.
Publication type: Journal article
Research centre: Swinburne University of Technology. Faculty of Engineering and Industrial Sciences
Source: Journal of Applied Polymer Science, Vol. 122, no. 2 (Oct 2011), pp. 1412-1419
Publication year: 2011
FOR Code(s): 0303 Macromolecular and Materials Chemistry; 0904 Chemical Engineering; 0912 Materials Engineering
Keyword(s): Composites; Differential scanning calorimetry; DSC; Ethylene-vinyl acetate; Hydroxyapatite; Nonisothermal crystallization
Publisher: John Wiley & Sons
ISSN: 0021-8995
Publisher URL: http://dx.doi.org/10.1002/app.34091
Peer reviewed