李浩天,宋平,乔天奎,蒋苏臣,宋晓峰
LI Hao-tian,SONG Ping,QIAO Tian-kui,JIANG Su-chen,SONG Xiao-feng

• 1:长春工业大学化学工程学院

摘要(Abstract)：

源于CO_2活化法制备活性炭系统,用自制装置探讨了溶剂气化交联方法对电纺聚乙丙交酯共聚物(PLGA)纳米纤维膜力学性能的改变。用扫描电镜观察了纤维交联前后的形貌变化。拉伸试验表明:适当交联改善了PLGA纤维膜的拉伸强度,但断裂伸长率明显下降。与交联时间和交联溶剂比例相比,氮气流速对纳米纤维的拉伸强度和断裂伸长率的影响更显著。细胞毒性测试表明交联纳米纤维膜无细胞毒性。
According to the system of activated carbon prepared by CO_2 activation,the device was made toinvestigate into the effect of solvent evaporation cross-linking on mechanical property of fibrous membrane.The morphological change of PLGA fibers before and after cross-linking was observed by SEM.The tensileexperiment showed that the tensile strength of PLGA fiber membrane could be modified by moderate cross-linking,but its elongation at break significantly dropped.Compared to time and mixture ratio of solvents,the effect of nitrogen flow rate on the mechanical property was more outstanding.MTT experiment indicatedthat the cross-linked fibrous membrane was non-cytotoxicity.

关键词(KeyWords)： 静电纺丝;聚乙丙交酯共聚物;溶剂气化交联;力学性能
electrospinning;PLGA;solvent evaporation cross-linking;mechanical property

Abstract:

Keywords:

基金项目(Foundation): 长春市重大科技攻关项目(2014111);; 吉林省教育厅项目(2014123);; 吉林省科技厅项目(20130102065JC)

作者(Author): 李浩天,宋平,乔天奎,蒋苏臣,宋晓峰
LI Hao-tian,SONG Ping,QIAO Tian-kui,JIANG Su-chen,SONG Xiao-feng

DOI: 10.16090/j.cnki.hcxw.2016.03.014

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