Enhanced stereocomplex formation of high-molecular-weight polylactides by gelation in an ionic liquid

Enhanced stereocomplex formation of high-molecular-weight polylactides by gelation in an ionic liquid
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通过在离子液体中凝胶化增强高分子量聚丙交酯的立体复合物形成

DOI:
10.1002/pi.4620
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发表时间:
2014-06
影响因子:
3.2
通讯作者:
Chun Li
Chun Li
中科院分区:
化学3区
文献类型:
--
作者:
Jie Zhu;Bing Na;Ruihua Lv;Chun Li

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实现高相对分子质量对映体聚乳酸的高度立体络合仍然是一个挑战。这项研究表明,在离子液体中凝胶化对映体聚乳酸是克服这一问题的一种简便方法。离子液体的存在增强了分子的流动性和相互扩散,从而在很大程度上消除了立体络合物形成的动力学障碍。离子液体中的凝胶化和立体络合物的形成为聚乳酸作为热稳定性较高的组织工程支架材料的应用提供了新的契机。©2013化学工业学会
It is still a challenge to achieve a high degree of stereocomplexation in enantiomeric polylactides with high molecular weight. This study demonstrates that gelation of enantiomeric polylactides in an ionic liquid, a non-volatile solvent, is a facile route to overcome this problem. The presence of the ionic liquid enhances the molecular mobility and mutual diffusion and thus to a large extent eliminates the kinetic barrier for stereocomplex formation. The gelation and stereocomplex formation in the ionic liquid may provide a new opportunity for the application of polylactides as scaffolds with high thermal stability in tissue engineering. © 2013 Society of Chemical Industry
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发表时间: 2010-01-26
期刊: MACROMOLECULES
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