Polylactic acid synthesis in two major ways:direct polymerization and lactate lactide ring-opening polymerization.
聚乳酸的合成方法主要有两种：乳酸直接聚合和丙交酯开环聚合。
Poly(L-lactide)(PLLA) was synthesized by ring-opening polymerization of L-lactide using cyclic tin alkoxide compound as initiator.
以环烷氧锡化合物引发L-丙交酯开环聚合制备高分子量聚L-乳酸。
There are two main methods to synthesis PLA, condensation polymerization of lactic acid and ring-opening polymerization of lactide.
聚乳酸的合成主要有两种方法：乳酸直接缩聚和丙交酯的开环聚合。
High molecular weight linear products were regenerated after the ring-opening polymerization of the cyclo-products using potassium phenoxide as initiator.
环状产物又在阴离子引发剂联苯双酚钾的作用下进行开环聚合重新得到高分子量的线性产物。
Polytetrahydrofuran (PTHF) with narrow molecular mass distribution was prepared by cationic ring-opening polymerization of tetrahydrofuran using H_2SO_4 · SO_3-HClO_4 system as a catalyst.
以发烟硫酸-高氯酸为催化剂，通过四氢呋喃的阳离子开环聚合合成了窄分子量分布的聚四氢呋喃(PTHF)。
The Ring-opening polymerization(ROP) of D-lactide(D-LA) catalyzed by bifunctional thiourea catalyst has been studied by performing density functional theory calculations at the B3LYP/6-31G(d) level.
用密度泛函理论在B3LYP/6-31G（d）水平上研究了双官能团硫脲催化丙交酯开环聚合反应的微观机理。
Figure 7... Several monomers for cationic ring... opening polymerization.
图7…几种阳离子开环聚合的单体。
There are two main methods to synthesis PLA, ring - opening polymerization of lactide and condensation polymerization of lactic acid.
聚乳酸的合成主要有两种方法：丙交酯的开环聚合和乳酸直接缩聚。
The synthesis of oxyethylene oxypropylene copolyethers used for quenchant was studied by using anionic ring opening polymerization, diol or triol as the starting agent and KOH as the catalyst.
研究了以KOH为催化剂，二元或三元醇为起始剂，采用阴离子开环聚合合成淬火剂用共聚醚。 结果表明：产物的分子量随起始剂和杂质量的减少而增加；
In this paper, the advances on selection and use of catalysts for ring - opening polymerization of PLA are reviewed and the future work in this area is also evaluated.
讨论了聚乳酸研究中开环聚合过程中各种催化剂的选择和使用，并对未来工作进行了展望。
In this paper, the advances on selection and use of catalysts for ring - opening polymerization of PLA are reviewed and the future work in this area is also evaluated.
讨论了聚乳酸研究中开环聚合过程中各种催化剂的选择和使用，并对未来工作进行了展望。
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