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针对生物陶瓷在大段骨缺损的修复重建中韧性不足的问题,采用数字光处理技术和涂层工艺,制备了集高强度韧性一体化的生物陶瓷β-磷酸三钙/聚己内酯复合支架,并研究了聚己内酯涂层浓度对复合支架抗压抗弯性能和微观形貌的影响。实验结果表明:聚己内酯涂层可有效提高β-磷酸三钙陶瓷支架的力学性能,复合支架的强度和韧性均与聚己内酯涂层浓度呈正相关性;随着聚己内酯涂层浓度的提高,复合支架的可靠性显著提高,涂层效果有明显的改善,但不均匀现象也越明显;结合力学性能和微观形貌评价发现,0.20 g/mL聚己内酯增强β-磷酸三钙复合支架的综合性能最佳。该研究可为制备满足骨生长到骨强化两阶段力学性能要求的复合支架提供参考。
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