首页> 外文会议>2012 19th Iranian Conference of Biomedical Engineering >Effects of reaction condition and feed composition on thermo-gelling behavior of PLGA-PEG-PLGA
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Effects of reaction condition and feed composition on thermo-gelling behavior of PLGA-PEG-PLGA

机译:反应条件和进料组成对PLGA-PEG-PLGA热凝胶行为的影响

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摘要

Intelligent thermosensitive formulations based on PLGA-PEG-PLGA triblock copolymer have great potential in biomedical applications, due to their good biocompatibility, biodegradability and injectability. The gelation behavior of the synthesized PLGA-PEG-PLGA triblocks was investigated in this study and the effect of PEG molecular weight and lactide to glycolide molar ratio, as well as the reaction time was investigated. Triblocks with PEG1000 have shown inappropriate gelation; while those with higher molecular weight formed gel at body temperature. The insulin release profiles showed an approximately linear release profile without a non-desirable burst effect More than 80% of the insulin was released during 4 weeks.
机译:基于PLGA-PEG-PLGA三嵌段共聚物的智能热敏制剂,由于其良好的生物相容性,生物降解性和可注射性,在生物医学应用中具有巨大的潜力。研究了合成的PLGA-PEG-PLGA三嵌段的胶凝行为,研究了PEG分子量和丙交酯与乙交酯的摩尔比以及反应时间的影响。具有PEG1000的三嵌段显示出不适当的凝胶化;而那些分子量较高的分子在体温下会形成凝胶。胰岛素释放曲线显示出近似线性的释放曲线,没有不希望的爆发效应,在4周内释放了80%以上的胰岛素。

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