Journal
POLYMER TESTING
Volume 24, Issue 8, Pages 978-982Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymertesting.2005.07.013
Keywords
poly(epsilon-caprolactone) composites; hydroxyapatite; mechanical property; viscoelastic property; interaction
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Poly(E-caprolactone)/hydroxyapatite (PCL/HA) composites as potential bone substitutes were prepared by melt-blending. The melting, crystallization and glass transition temperatures deduced from differential scanning calorimetery and dynamic mechanical thermal analysis (DMTA) were all changed by the addition of HA, suggesting an interaction at the interface of these two phases. Quasi-static mechanical testing shows that the yield strength and Young's modulus of PCL were increased by the addition of the reinforcement filler, HA. Dynamic viscoelastic properties were investigated using DMTA and an advanced rheometric expansion system. The results show that both the storage modulus and viscous modulus are enhanced by HA, and the PCL composite melts still behave like pseudo-plastic liquid. (c) 2005 Elsevier Ltd. All rights reserved.
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