静电纺聚氨酯(PU)/单壁碳纳米管复合纤维的性能  

Properties of Electrospun Composite Fibers of Polyurethane (PU)/Single-Wall Carbon Nanotube

作　　者：李敏暄 覃小红[1] 

机构地区：[1]东华大学纺织学院,上海201620

出　　处：《东华大学学报（自然科学版）》2013年第6期703-709,共7页Journal of Donghua University(Natural Science)

基　　金：国家自然科学基金资助项目(50973014;11172064);全国优秀博士学位论文作者专项基金资助项目(200961);上海市青年科技启明星资助项目(10QA1400100);教育部霍英东基金资助项目(121071);教育部新世纪优秀人才支持计划资助项目(NCET-10-0322);中央高校基本科研业务费专项基金资助项目(东华大学重点项目和培育计划);上海市曙光计划资助项目(11SG33)

摘　　要：采用聚氨酯(PU)和单壁碳纳米管(SWCNTs)为原料制备静电纺纤维,应用扫描电子显微镜(SEM)和透射电子显微镜(TEM)分析纤维的直径和表面结构的变化,测试了纤维膜的断裂强度、浸润性与导电性随单壁碳纳米管质量分数的变化关系.研究结果表明:随着碳纳米管质量分数的增加,纤维直径降低,不匀率增大,有串珠出现;在碳纳米管质量分数为0.5%时,纤维膜断裂强度达到最大值12.18MPa;纤维膜的接触角变化不明显,增量只有10°;在所测碳纳米管质量分数范围内,纤维膜的电导率明显增加,较原聚氨酯电导率提高近200倍,导电性明显改善.The electrospinning was used to produce polyurethane （PU） and single-wall carbon nanotube （SWCNTs） composite fibers. The morphology structure and fiber diameter were analyzed by scanning electron microscopy （SEM） and transmission electron microscopy （TEM）. The relationship between the mass fraction of the SWCNTs and the tensile, wettability, conductivity properties of the fiber membranes was investigated. The research results show that the diameters become smaller, while the morphology become rougher and the beads appear with the increasing of the mass fraction of the SWCNTs in solutions. The maximum tensile strength at break was 12.18 MPa when the mass fraction of the SWCNTs was 0.5%, and the variation of contact angle was not obvious, which was only 10~. The electrical conductivity of the studied membranes was improved obviously, which was 200 times comparing with pure PU.

关 键 词：聚氨酯(PU) 单壁碳纳米管(SWCNTs) 强度 接触角 导电性 

分 类 号：TS185.1[轻工技术与工程—纺织材料与纺织品设计]