查询词典 lactide

PLA samples with various configurational structures were synthesized from different L-lactide and DL-lactide feeds.

3研究不同立体构型的PLA的结晶行为、形貌和酶降解过程。

It included the synthesis of lactide, the purification of lactide, the polymerization of lactide and the compositess analysis and so on.

包括丙交酯的制备、提纯、聚合及复合材料性能的表征一系列研究工作。

It included the synthesis of lactide, the purification of lactide, the polymerisation of lactide and the polymers analysis and so on.

包括丙交酯的制备、提纯、聚合及聚合物的性能表征—系列研究工作。

The results showed that, melting point of high yield lactide made in the lab reached 127℃ after three times of recrystallization, and the yield of lactide reached 57.2%.

结果表明：自制高收率丙交酯经过3次重结晶后，熔点可达到127℃，熔程在1℃以内，总产率为57.2%。

This paper reviewed the recent development of synthesis of propyl lactide,discussed the effects of different synthesis techniques and various catalyst system s for the preparation of propyi lactide on the yield and discussed the prospect of propyl lactide synthesis.

介绍了丙交酯合成研究的最新进展，比较了不同催化体系和不同合成工艺对丙交酯收率的影响，并对丙交酯合成的发展前景进行了展望。

Objective To study the pH and temperature sensitive properties of sulfamerazine oligomers-polyε-caprolactone-co- DL -lactide-b-ethyleneglycol- b -ε-caprolactone-co-DL-lactide-sulfamerazine oligomers（OSM1-PCLA-PEG-PCLA-OSM1）block copolymer and evaluate sustained release effect of 5-fluorouracil release from the loaded hydrogel in vitro.

摘要目的为嵌段共聚物磺胺甲嘧啶低聚物-聚-ε-己内酯-丙交酯-聚乙二醇-聚-ε-己内酯-丙交酯-磺胺甲嘧啶低聚物（sulfamerazine oligomers-poly(ε-caprolactone-co- DL -lactide-b-ethyleneglycol- b-ε-caprolactone-co-DL-lactide)-sulfamerazine oligomers，OSM1-PCLA-PEG-PCLA-OSM1作为缓控释给药系统的载体提供依据。

Methods Autologous BMMSC of New Zealand rabbits were acquired and induced into chondrogenic differentiation by adding transforming growth factor-β1 (TGF-β1), dexamethasane and ascorbic acid in vitro. Then the chondrocytes were implanted onto novel polymeric scaffolds made by Poly (dl-lactide-co-glycolide) embedding with chitosan nonwoven cloth. The tissue engineering cartilaginous grafts composed of chondrogenetic BMMSC/scaffolds were finally transplanted into the defects of ear cartilage in rabbits of the experimental group.

取新西兰大白兔BMMSC体外培养扩增，以含转化生长因子(TGF-β1)、地塞米松和维生素C的培养液做诱导培养，实验组以诱导后的软骨细胞与聚丙交酯－乙交酯共聚物Poly(dl-lactide-co-glycolide)包埋甲壳胺无纺布的新型支架形成复合物修复兔自体耳廓软骨缺损；对照组以PLGA/甲壳胺无纺布支架修复兔耳廓软骨缺损。

OBJECTIVE: To investigate the biocompatibility of poly (DL-lactide-coglycolide). Copolymer ratio of lactide: glycolide was 85:15 or 50:50and evaluate its effect on nerve guidance.

目的：对共聚比为(85：15)及(50：50)的聚乳酸-聚羟基乙酸共聚物材料的生物相容性及神经再生诱导作用进行对比观测。

Both direct synthesis and ring-opening polymerization can be utilized to prepare homo- and copolymers of lactic acid such as L-lactide, D-lactide, D, L-lactide, and glycolide.

直接聚合和开环聚合两种方法可以用来制备乳酸的均聚物和共聚物，如聚L乳酸、聚D乳酸、聚D，L乳酸和L乳酸乙醇酸共聚物。

Degradation of poly-d,l-lactide in vivo and 20mm nerve gap rec overed by poly-d,l -lactide guide were reported.

摘 要 报道了聚-d，l-乳酸在大鼠体内的降解，以及用聚d，l-乳酸制备的神经诱导管对大鼠坐骨神经20mm断缺修复的研究。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。