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http://dx.doi.org/10.5392/JKCA.2021.21.03.609

Effect of Addition of β-TCP on Bioactivity and Mechanical Properties of Biodegradable PLA/β-TCP Composites  

Moon, Hee-Jung (여주대학교 치위생(학)과)
Kim, Seol-Ak (여주대학교 치위생(학)과)
Kim, Dong-Ae (여주대학교 치위생(학)과)
Publication Information
The Journal of the Korea Contents Association / v.21, no.3, 2021 , pp. 609-615 More about this Journal
Abstract
The aim of the present study was to investigate the mechanical properties of melt-injected poly lactic acid (PLA) composites with β-tricalcium phosphate (β-TCP). The PLA mixed with calcined PLA/β-TCP powder to be contents of 0, 10, 30, 50 wt%, respectively, was dissolved in chloroform solvent under stirring for 24 h. Then the liquid mixtures were dropped into ethanol to extract solvent. After drying, the well-dispersed PLA/β-TCP composites were granulated and melt-injected to prepare specimens for various mechanical testing. PLA/β-TCP induced the precipitation of an apatite bone-mineral phase on the surface after immersion in a human simulated body fluid (SBF) for 90 days, showing in bioactivity. Mean various mechanical properties PLA/β-TCP composite were increased up to 10-30 wt% with significantly in part and composite were decreased 50 wt% of showing in mechanical properties. In conclusion, Over 30 wt% addition of β-TCP to PLA may be not advisable to improve the mechanical properties of melt-injected polymeric composites. Results indicated that β-TCP can be used considered as potential reinforcing agent for increasing mechanical properties for PLA. Therefore, it was suggest that the additional effects of β-TCP and research on a wide range of substances.
Keywords
PLA; ${\beta}$-TCP; Mechanical Properties; Bioactivity;
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