The synthesis and thermal stability of poly(L-lactide)were investigated.
对聚丙交酯的合成和热稳定性进行了研究。
It was found that poly (L-lactide) is thermally unstable above its melting temperature.
实验表明在高于聚合物熔点温度以上，聚丙交酯表现出热不稳定性。
Preparation technique was ameliorated in order to improve purity and yield of L-lactide.
为提高L -丙交酯的纯度和产率，对l -丙交酯的制备技术进行改进。
The Clinical Application of Poly (lactide), Sichuan Biochem-ZX Research Co., Ltd, Minglong Yuan.
聚乳酸制品在临床上的应用，四川琢新生物材料研究有限公司，袁明龙。
We use the method of decomposing PLA to synthesize lactide by means of orthodoxical experiment method.
本文主要进行了丙交酯的合成工艺研究及聚乳酸的开环聚合工艺研究。
Study on Blends of Poly (lactide) and Starch, Sichuan University, Yuan Minglong, Wang Guiheng, Deng Xianmo.
聚乳酸与淀粉共混的研究，四川大学高分子材料学院，袁明龙，王贵恒，邓先模。
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。
This experiment aimed at investigating the effect of a kind of home bred poly DL lactide screws on fracture healing.
本实验旨在研究一种自制PDLLA螺钉对骨折愈合的影响。
Lactide, which was synthesized through lactic acid condensation, was polymerized to form PLA by ring-opened of lactide.
聚乳酸的制备多采用乳酸脱水生成丙交酯，然后开环聚合成聚乳酸。
This technology can not only reduce the cost of producing lactide , but also solve the pollution problems from kitchen garbage.
本工艺不但可降低丙交酯的生产成本，而且解决了厨房垃圾的环境污染问题。
The different lactide-co-glycolide ratio of the PLGA microspheres containing NET was prepared by a solvent-evaporation process.
二种组成比不同的丙交酯—乙交酯共聚物以溶剂挥发法制成含炔诺酮的微球。
Butyl lactate was synthesized by the ester exchange reaction of d, L-lactide and n-butanol under the catalysis of sulfuric acid.
研究了D,L -丙交酯在浓硫酸催化作用下与正丁醇进行酯交换反应合成乳酸丁酯的条件。
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。
A low molecular weight poly (DL lactide) containing carbon carbon bonds was synthesized from DL lactide, glycerin and fumaric acid.
由丙三醇、丙交酯和反丁烯二酸制得一含碳碳双健的低分子量聚酯。
OBJECTIVE To investigate the effect of adding ethanol in inner organic phase on the properties of poly (d, 1-lactide) microspheres.
目的考察内相乙醇加入量及其他制备因素对聚丙交酯微球性质的影响。
Objective To observe the effect of the poly dl lactide (PDLLA) used as cell culturing scaffold on the growth of rabbit chondrocytes.
目的观察国产外消旋聚乳酸(PDLLA)材料为细胞载体对软骨细胞吸附生长增殖的影响。
So here we will take the way of the Equal Channel Angular Extrusion (ECAE) to process poly (d, L-lactide) to improve its properties.
本研究采用等通道转角挤压技术对聚(d,L -)乳酸进行自增强研究，并测试其增强后的降解性能。
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。
Specific drug–polymer interactions are engineered by optimizing the lactide to glycolide ratio and including specific polymer end groups.
通过优化丙交酯与乙交酯比例及加入特殊的聚合物末端基来获得特殊的药物-聚合物间相互作用。
ML-PLLA was synthesized by ring-opening polymerization of L-lactide in the presence of mannitol, it has the characteristic of low melt viscosity.
丙交酯在甘露糖醇分子上引发聚合得到的ML—PLLA具有低熔体粘度的特性。
Specific drug–polymer interactions are engineered by optimizing the lactide to glycolide ratio (L:G ratio) and including specific polymer end groups.
通过优化丙交酯与乙交酯比例（L：G比）及加入特殊的聚合物末端基来获得特殊的药物-聚合物间相互作用。
In this paper, the polylactic acid is synthesized by two-step method from lactic acid to lactide, then open-ring polymerize to PLA (polylactic acid).
采用二步法由乳酸制备丙交酯，由丙交酯的开环聚合制备高分子量的聚乳酸。
Improved the method of purification, the structure of lactide was characterized by the melting point, IR, UV, Digital Automatic Polarimeter and HPLC.
改进了提纯L -丙交酯的方法，采用熔点、红外光谱、紫外光谱、数字自动旋光仪及高效液相色谱对提纯后的L -丙交酯进行了表征。
As its biodegradability and biocompatibility, poly(lactide) (PLA) has been wildly used in medical suture, tissue engineering scaffold and drug delivery carrier.
聚乳酸的生物降解率较高且其降解产物无毒，已被广泛用作医用缝线、组织工程支架和药物控释载体。
Recently, poly (d, l-lactide) -poly (ethylene glycol) (PLA-PEG) block copolymers have been widely applied owing to the favorable biodegradability and biocompatibility.
聚乳酸-聚乙二醇嵌段共聚物因具备良好的生物可降解性和相容性而得到广泛应用。
Polylactic acid (PLA) is a linear aliphatic polyester produced by poly-condensation of naturally produced lactic acid or by the catalytic ring opening of the lactide group.
聚乳酸(PLA)是一种线性脂肪族聚酯的聚乳酸中自然产生的或由丙交酯开环缩合催化剂组产生。
The effects of the synthesis conditions such as monomer(lactide) purity, catalyst(stannous octoate) concentration, vacuum level, reaction time and temperature, were discussed.
探讨了单体丙交酯纯度、催化剂辛酸亚锡用量、反应时间、反应温度及真空度对聚合物相对分子质量的影响。
The resulted D, L-lactide and glycolide were found to have ring structure by fourier transform infrared spectrometry and proton nuclear magnetic resonance(1H NMR) spectrometry.
通过傅立叶红外光谱和氢核磁谱（1H NMR）测试表明所合成的丙交酯和乙交酯具有环状结构。
The resulted D, L-lactide and glycolide were found to have ring structure by fourier transform infrared spectrometry and proton nuclear magnetic resonance(1H NMR) spectrometry.
通过傅立叶红外光谱和氢核磁谱（1H NMR）测试表明所合成的丙交酯和乙交酯具有环状结构。
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