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首页> 外文期刊>Key Engineering Materials >Mechanical behavior of interpenetrating co-continuous β-TCP- PDLLA composites
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Mechanical behavior of interpenetrating co-continuous β-TCP- PDLLA composites

机译：互穿共连续β-TCP-PDLLA复合材料的力学性能

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摘要

Co-continuous degradable polymer-ceramic composites were produced via in-situ polymerization of (D,L-lactic)acid monomer within a porous β-tricalcium phosphate matrix. The mechanical properties of both the composite and the unfilled porous ceramic were investigated with compressive testing. The average stress to failure increased from 1.3 ± 0.1 MPa for the unfilled ceramic matrix to 82 ± 2 MPa for the composite. The Young's modulus increased from approximately 20 MPa to 700 ± 42 MPa. A combination of X-ray micro-tomography and mechanical testing provided insight into the failure mechanisms of the composite. Stress may be deflected by crack bridging around the polymer phase leading to debonding of the polymer along the crack lines.
机译：通过在多孔β-磷酸三钙基质中的（D，L-乳酸）酸单体进行原位聚合制备共连续可降解聚合物-陶瓷复合材料。通过压缩试验研究了复合材料和未填充的多孔陶瓷的机械性能。平均失效应力从未填充的陶瓷基体的1.3±0.1 MPa增加到复合材料的82±2 MPa。杨氏模量从大约20 MPa增加到700±42 MPa。 X射线显微断层扫描和机械测试相结合，提供了对复合材料破坏机制的深入了解。应力可通过在聚合物相周围的裂纹桥接而偏转，从而导致聚合物沿裂纹线剥离。

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