title: Carbon Nanotubes-Adsorbed Electrospun PA66 Nanofiber Bundles with Improved Conductivity and Robust Flexibility.
abstract: Electrospun polyamide (PA) 66 nanofiber bundles with high conductivity, improved strength, and robust flexibility were successfully manufactured through simply adsorbing multiwall carbon nanotubes (MWNTs) on the surface of electrospun PA66 nanofibers. The highest electrical conductivity (0.2 S/cm) and tensile strength (103.3 MPa) were achieved for the bundles immersed in the suspension with 0.05 wt % MWNTs, indicating the formation of conductive network from adsorbed MWNTs on the surface of PA66 nanofibers. The decrease of porosity for the bundles immersed in the MWNT dispersion and the formation of hydrogen bond between PA66 nanofibers and MWNTs suggest a superb interfacial interaction, which is responsible for the excellent mechanical properties of the nanocomposite bundles. Furthermore, the resistance fluctuation under bending is less than 3.6%, indicating a high flexibility of the nanocomposite bundles. The resistance of the nanocomposite bundle had a better linear dependence on the temperature applied between 30 and 150 °C. More importantly, such highest working temperature of 150 °C far exceeded that of other polymer-based temperature sensors previously reported. This suggests that such prepared MWNTs-adsorbed electrospun PA66 nanofiber bundles have great potentials in high temperature detectors.
authors.affiliation: College of Materials Science and Engineering, The Key Laboratory of Material Processing and Mold of Ministry of Education, Zhengzhou University , Zhengzhou, P.R. China.
authors.forename: Xiaoyang
authors.initials: X
authors.lastname: Guan
authors.affiliation: College of Materials Science and Engineering, The Key Laboratory of Material Processing and Mold of Ministry of Education, Zhengzhou University , Zhengzhou, P.R. China.
authors.forename: Guoqiang
authors.initials: G
authors.lastname: Zheng
authors.affiliation: College of Materials Science and Engineering, The Key Laboratory of Material Processing and Mold of Ministry of Education, Zhengzhou University , Zhengzhou, P.R. China.
authors.forename: Kun
authors.initials: K
authors.lastname: Dai
authors.affiliation: College of Materials Science and Engineering, The Key Laboratory of Material Processing and Mold of Ministry of Education, Zhengzhou University , Zhengzhou, P.R. China.
authors.forename: Chuntai
authors.initials: C
authors.lastname: Liu
authors.affiliation: Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee , Knoxville, Tennessee 37996, United States.
authors.forename: Xingru
authors.initials: X
authors.lastname: Yan
authors.affiliation: College of Materials Science and Engineering, The Key Laboratory of Material Processing and Mold of Ministry of Education, Zhengzhou University , Zhengzhou, P.R. China.
authors.forename: Changyu
authors.initials: C
authors.lastname: Shen
authors.affiliation: Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee , Knoxville, Tennessee 37996, United States.
authors.forename: Zhanhu
authors.initials: Z
authors.lastname: Guo
keywords: carbon nanotube; conductive polymer composites; electrospinning; nanocomposite bundles; temperature detector