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| Preparation and Properties of QF/n-HA/PA66 Composite Biomaterial |
| CHEN Shutian LI Hong HAO Xinyan WANG Guangni FAN Xiaoxia YAN Yonggang** |
| (College of Physical Science and Technology, Sichuan University, Chengdu 610064) |
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Cite this article:
CHEN Shutian LI Hong HAO Xinyan WANG Guangni FAN Xiaoxia YAN Yonggang**. Preparation and Properties of QF/n-HA/PA66 Composite Biomaterial. Chinese Journal of Materials Research, 2013, 27(1): 32-36.
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Abstract ABSTRACTS Quartz fibre/nano-hydroxyapatite/polyamide 66 (QF/n-HA/PA66) composite biomaterial was prepared by extrusion method in this study. The composition and morphology of the composite were characterized by FT-IR, XPS, XRD and SEM. The mechanical strength was tested by universal material testing machine and the cytotoxicity was evaluated using L929 cell line. The results showed that QF was uniformly dispersed in n-HA/PA66, with the hydrogen bond formed between QF and PA66. The mechanical strength of QF/n-HA/PA66 composite biomaterial was improved with the increase of the quartz fibre content. When the QF content (mass fraction) increased to 38%, the composite’ tensile strength, compressive strength and flexural strength reach 81 MPa, 190 MPa and 195 MPa respectively, higher than those of human cortical bone. The load bearing on the n-HA/PA66 composite matrix transferred to QF fibre, and the load bearing rapidly diffused in all directions because of stress transmission along the axial direction of the QF fibre. While this stress transmission had an efficacy of load disperse in some extent, thus enhanced the capability of the composites adapting to loadings, and the mechanical strength of QF/n-HA/PA66 remarkably increased. After 3 days of culture with the L929 cell line, no negative effects of the composite on cell viability were observed, demonstrating that the composite had no cytoxicity.
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