查询词典 lactide

Lactide, glycolide or caprolactone, biodegradable polyester and diisocyanate as materials are first bulk melt polymerized to prepare the degradable polymer with thermal deformation transforming temperature of about 37 deg.c. The obtained material is processed at temperature over melting temperature so as to shape into spiral rack, applied with stress at temperature higher than Ttrans to form shape easily operational handling and frozen to eliminate stress into the product.

本发明以丙交酯、乙交酯或己内酯，生物可降解聚酯及二异氰酸酯为原料，通过本体熔融聚合制备得到热致形变温度转化点在37℃左右的可降解高分子材料，将得到的材料在熔融温度以上进行加工、赋形制作成用于不同管腔内的螺旋管状支架；在T＞T trans 条件下施加应力，加工为便于手术操作的形状；冷冻定型消除应力，即得产品。

Samples of lactide with melting point 127℃ were conducted a quantitative analysis test by using non aqueous titration with sodium methoxide and Karl Fischer method.

用甲醇钠非水滴定法、卡尔－费休法对熔点为127℃的丙交酯样品进行了定量分析试验，测出残存的乳酸和水的质量分数分别为0.09％和0.07％左右，回收率分别为98.64％～101.2％和98.74％～101.1％。

The D,L-lactide was prepared from D,L-lactic acid with the stannous octoate as the catalyst and the factors affecting the preparation were discussed.

以乳酸为单体，在催化剂存在下乳酸先缩聚后解聚制备了D，L-丙交酯。

Polylactide/ nano-silica composites were synthesized with lactide and modified nano-silica by tin octoate catalyst.

以丙交酯和改性后的纳米二氧化硅为原料，在辛酸亚锡催化作用下，制备了聚乳酸纳米二氧化硅复合材料。

A novel biodegradable copolymer of poly and poly (γ-benzyl-L-glutamate) was successfully synthesized. Under appropriate conditions, the PBLG initiates the ring-opening polymerization of L-lactide to produce block copolymer, by using low toxicity stannous octoate as catalyst. The optimal reaction conditions were determined as follows; the catalytic agent: PBLG=1:1, the temperature is 120℃, the reaction time is 6h.

以L-丙交酯为原料，在催化剂辛酸锡酯Sn2的作用下，利用聚的活性端氨基引发LLA进行开环聚合，合成了聚L-丙交酯与聚的共聚物，对反应条件的各项因素进行了讨论，确定了最佳反应条件是：m：m=1：1；反应温度120℃；反应时间6h。

The PDLLA with a viscosity average molecular weight beyond 20×10~4 was obtained under the optimum synthesis conditions of the lactide after being recrystallized 4 times as the monomer,the vacuum level of 0.098 MPa,reaction temperature of 150-160 ℃,reaction time of 6-8 h,and using 0.1%-0.18% stannous octoate as catalyst.

实验结果表明，重结晶4次后的丙交酯作为单体，在辛酸亚锡摩尔分数为0.1%—0.18%，真空度0.098 MPa，聚合温度150—160℃下聚合6—8 h可获得粘均相对分子质量Mη大于20×104的聚D，L-丙交酯。

Linear and star-shaped hydroxy-terminated polys were synthesized by reacting L-lactide with co-initiators such as poly,hydroxyethyl methycrylate,trimethylolpropane,mannitol and sorbierite in the presence of stannous octoate as catalyst.

以辛酸亚锡为催化剂，分别以聚乙二醇、甲基丙烯酸羟乙酯、三羟甲基丙烷、季戊四醇、甘露醇和山梨醇等和L-丙交酯反应，得到末端为羟基的线形和星形聚L-丙交酯。

The cylindrical palatal implant was made of Hydroxyapatite and Poly(lactide-co-trimethylene carbonate), adding barium sulphate(BaSO4),to be implanted in vivo.

在自行研制的羟基磷灰石-聚乳酸-三亚甲基碳酸酯软腭植入材料中掺入适量硫酸钡(BaSO4)，并将其植入到实验动物体内，定期行X线摄片。

A series of degradable aliphatic polyurethane copolymer based on L-lactide, polybutadiene and hexamethylene diisocyanate were designed and synthesized to meet the need of binder for antifouling paint for highly flexible degradable resin.

为开发新型环保长效防污涂料，获得降解速率可控的，可稳定释放环保型防污剂，并具有良好柔韧性的树脂基料，本文通过分子设计，合成一系列组成不同的可降解聚氨酯树脂。

The results indicated that stable emulsions and macroporous structure were prepared by PELA, but hydrophobic poly and poly(lactide-co-glycolide) could only produce microcapsules.

大孔微球是一种具有网状大孔结构的新型基质，它不仅是动物细胞大规模培养[1]的关键，而且还可以应用于医

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。