复合纤维PCL/EVOH的激光熔体静电纺丝法制备及其性能研究  

Preparation and characterization of poly(ε-caprolactone)/ poly(ethylene-co-vinyl alcohol)by laser melt-electrospinning

作　　者：王娇娜[1,2] 王哲[1] 李秀艳[1] 李从举[1,2] 

机构地区：[1]北京服装学院材料科学与工程学院,北京100029 [2]北京市服装材料研究开发与评价重点实验室,北京100029

出　　处：《化工新型材料》2014年第5期74-76,94,共4页New Chemical Materials

基　　金：国家自然科学基金项目(21274006);北京服装学院科学研究项目一般科研项目(2012A-09);北京市优秀人才培养资助(2013D005001000003)

摘　　要：EVOH涂覆法制备PCL/EVOH复合纤维棒,采用激光熔体静电纺丝法将纤维棒制成微/纳米纤维毡,研究了EVOH涂覆对静电纺纤维形貌和性能的影响。利用SEM、DSC、TG-DTA及WCA对纤维形貌、熔点、热稳定性和亲水性进行了表征。SEM结果表明:EVOH涂覆后,PCL纤维直径可从7μm显著降低到2μm;WCA结果表明:EVOH涂覆PCL后纤维膜的亲水性得到明显改善;DSC测试表明:EVOH的涂覆对PCL的熔点的影响很小;TG-DTA分析证实:复合纤维PCL/EVOH仍具有较好的热稳定性。Rodlike PCL/EVOH composite fibers were made.Laser melt electrospinning was a new technology to produce micro-nano fibers.Micro/nano fibers were produced from these rod-like fibers by using a laser melt-electrospinning system,and the effect of EVOH component on the diameter and morphology of the fibers were described.The micro morphology of the fibers was studied by scanning electron microscope（SEM）.The melting point was studied by differential scanning calorimetry（DSC）.The thermostability was characterized by thermogravimetric-differential thermal analysis（TGDTA）.The hydrophilicity of the nano-scale fiber mats was analyzed by water contact angle（WCA）.With the SEM results, it was proved that PCL coated with EVOH had a significant effect on fiber diameter decreased from 7μm to 2μm or so.The PCL/EVOH proved to be more hydrophilicity than the PCL.With the DSC results,it was proved that PCL coated with EVOH had little difference on the melting point.The PCL/EVOH had good thermostability.

关 键 词：PCL PCL/EVOH 激光熔体静电纺丝 微纳米纤维 

分 类 号：TQ340.64[化学工程—化纤工业]