Poly (lactic acid) and its copolymers are a potential general green polymer in 21 century, and their monomer preparation and polymerization methods have become an investigative hotspot nowadays.
聚乳酸及其共聚物可望成为2 1世纪的通用绿色高分子，其单体制备方法及聚合方法的改进成为当前研究的热点。
Poly(lactic acid)(PLA)is a well-known biocompatible & bioresorbable polymer, which is being increasingly used as a biomaterial for temporary therapeutic applications.
聚乳酸是近年来获得广泛应用的生物相容性良好的生物材料。
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。
The result of immersion experiment indicates that the more molecular weight of lactic acid polymer the better the effect of controlled release is.
浸泡实验结果表明，聚乳酸的分子量越高，缓释放效果越好。
Poly L-lactic acid (PLLA), widely used in biomedicine, is natural polymer material made from corn, which is nontoxic, biodegradable and biocompatible with organism like cell.
聚l -乳酸(PLLA)是一种来源于玉米的纯天然高分子材料，无毒副作用、可降解、生物相容性及细胞亲和性好，广泛应用于生物医用材料。
And the effects of kind of catalyst and polymerization condition on the preparation of low molecular weight lactic acid polymer were investigated.
研究探讨了催化剂种类及其用量、反应温度和时间等聚合条件对低分子量聚乳酸分子量的影响。
And the effects of kind of catalyst and polymerization condition on the preparation of low molecular weight lactic acid polymer were investigated.
研究探讨了催化剂种类及其用量、反应温度和时间等聚合条件对低分子量聚乳酸分子量的影响。
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