With the Zinc as the catalyst, lactide monomer was obtained by decomposition of low polymer. With the zinc diethyl as the catalyst, the lactide was polymerized to Poly(DL-lactic acid).
以锌为催化剂由乳酸的低聚物裂解制得单体丙交醋，再由二乙基锌引发开环聚合得到高分子量的聚乳酸。
Methods This composite with single particle-like Hydroxyapatite embedded in the Poly (DL-lactic acid) (PDLLA) matrix was prepared by applying the uniform compounding technique.
方法利用均匀复合技术，制备出羟基磷灰石在聚乳酸基体中呈单颗粒的复合材料；
The heat treatment has a little effect on the polycondensation of DL-lactic acid.
后期的热处理对促进DL -乳酸的缩聚反应作用不明显。
This strain can ferment hydrolytic sugar of the starch to form the DL-lactic acid in accordance with mechanism of homolactic fermentation.
该菌能按同型乳酸发酵机理使淀粉水解糖发酵生成DL-型乳酸。
OBJECTIVE: to design and fabricate the poly DL-lactic acid biodegradable fusion cage of lumbar vertebrae, and to analyze the material characteristics.
目的：设计并研制聚- DL -乳酸矩形生物降解腰椎间融合器，分析其材料学特性。
Objective:To study the biomechanics function of self-locking cerclage band made of biodegradable material poly-DL-lactic acid(PDLLA) in the fixation of fractures.
目的：研究生物降解聚-DL-乳酸（PDLLA）自锁式捆绑带固定骨折的生物力学性能。
Objective:To study the biomechanics function of self-locking cerclage band made of biodegradable material poly-DL-lactic acid(PDLLA) in the fixation of fractures.
目的：研究生物降解聚-DL-乳酸（PDLLA）自锁式捆绑带固定骨折的生物力学性能。
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