碩士 / 國立臺灣科技大學 / 材料科學與工程系 / 104 / In this study, polylactic acid (PLA)/scales powder (SP) composites were prepared by melt blending. The SP content of composites are from 0 to 50 wt%. The thermal stability and the residual amount of the PLA and the PLA/SP composites were studied by using a Thermo gravimetric Analyzer. Moreover, differential scanning calorimeter (DSC) analysis at a rate of 2 ℃/min to discussion melt crystallization behavior, melting behavior and isothermal crystallization kinetics. Increased concentration of SP reduced crystal formation of PLA as seen by the peak intensity of X-ray diffraction (XRD). The functional groups of SP and PLA were analyzed by Fourier transform infrared spectroscopy (FTIR). The tensile test is to find the measurement of various mechanical properties. The samples were soaked in phosphate buffer solution (PBS) for 4 weeks, 8 weeks and 12 weeks to study stability analysis, and measuring degradation rate. Microstructure characterization of cross-sections of the PLA and the PLA/SP composites were observed by scanning electron microscopy (SEM). The in vitro cytotoxicity test show that the SP adding would not affect the PLA biocompatibility by L929. We expected this composites can be used in bone repair of injection grade medical products.
| Identifer | oai:union.ndltd.org:TW/104NTUS5566039 |
| Date | January 2016 |
| Creators | Jhih-Ling Huang, 黃芷翎 |
| Contributors | Ming-Chien Yang, 楊銘乾 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 79 |
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