| DENG Chi,YANG Xiao-bing,LU Xiong,ZHOU zhao-bing,QU Shu_xin,WENG Jie.Solution-Co-blending Preparation and Mechanical Properties of Hydro-apatite/Polycaprolactone Composite Biomaterials[J],37(2):14-15,49 |
| Solution-Co-blending Preparation and Mechanical Properties of Hydro-apatite/Polycaprolactone Composite Biomaterials |
| Received:December 18, 2007 Revised:April 10, 2008 |
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| DOI： |
| KeyWord:Solution co-blending Hot-pressing Composite Mechanical properties |
| Author | Institution |
| DENG Chi |
1. Leshan Normal School, Leshan , China;2. Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Chengdu , China |
| YANG Xiao-bing |
Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Chengdu , China |
| LU Xiong |
Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Chengdu , China |
| ZHOU zhao-bing |
Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Chengdu , China |
| QU Shu_xin |
Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Chengdu , China |
| WENG Jie |
Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Chengdu , China |
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| Abstract: |
| Hydroxyapatite( HA) particles and Polycaprolactone ( PCL) , as two basic compositions of composite were firstly dispersed in N,N-Dimethylacetamide( DMAC) dispersant, and then the DMAC was by inches cleaned out by intensively stirring in 60'C . The mixture obtained including HA and PCL was fallen to pieces, and then pressed at 1200C in hot-pressing machine, finally, thin film of HA/PCL composite film was prepared. These results of FT-IR show that HA/PCL composite is made up of HA fillers and PCL matrix and no new chemical composition is found in as-preparation materials. Mechanical property testing illuminates that bonding strength between HA and PCL is enhanced and tensile modulus of HA/PCL composite is obviously improved. However, puny mechanical bonding between HA fillers and PCL matrix directly leads to lower yield stress, while that composite containing 200-/o HA fillers exhibites a higher strength. On the other hand, under the condition of effectively controlling HA contents in microstructure of composite film, HA filler can make maximum stress of PCL-matrix composite improve and become a buildup composition of composite. |
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