【摘要】 将用取向模压增强的聚 ( D,L-乳酸 ) /羟基磷灰石 ( PDLLA/ HA)复合物圆棒 ( 3.2 mm)在37℃的生理盐水中进行降解试验 ,结果显示 HA对 PDL LA的降解有显著的抑制作用 ,圆棒的力学强度保持时间比纯 PALL A棒长。讨论了 PDL LA在 HA存在下的降解机理更多还原

【Abstract】 The degradation behavior in vitro of poly(D,L lactide)/hydroxyapatite(PDLLA/HA) composite rods with 3.2mm prepared by oriented compression moulding was tested in physiological saline at 37℃. Results show that HA has significant inhibition on the degradation of PDLLA and thus the composite rods have longer strengeth maintain periods than that of the pure PDLLA. The degradation mechanism of PDLLA in the presence of HA was discussed.更多还原