Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 107, Issue -, Pages 326-333Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2018.01.017
Keywords
Polymer-matrix composites (PMCs); Impact behaviour; Thermomechanical; Injection moulding
Funding
- Universiti Malaysia Pahang [RDU 1603139]
- Hessen State Ministry of Higher Education, Research and the Arts-Initiative for development of Scientific and Economic Excellence (LOEWE)
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Synergistic composites from poly(lactic acid) (PLA) and hydroxyapatite (HA) hold great potential for load bearing applications. In this study, PLA-HA composites were produced through extrusion, and test specimens were subsequently prepared through injection molding. Impact properties of the composite was improved by incorporating different amount (0 to 15 wt%) of Biomaxa (R) Strong 120 (BS) impact modifier. The mechanical, thermal, morphological and dynamic mechanical properties of the resulting composite were investigated. Likewise, chemical interactions during blending were investigated through Fourier transforms infrared spectroscopy. Incorporation of BS decreased the crystallization activities at the PLA-HA interface, but with a right shift in crystallization temperature as the BS content increases. Also with increasing BS content, mechanical properties of the PLA-HA composite were reduced. However there is an obvious increment in impact strength (78%) and elongation at break (206%). The composite containing 5 wt% BS content presents the best compromise among the investigated properties.
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