title: Thermal conductivity of electrospun polyethylene nanofibers.
abstract: We report on the structure-thermal transport property relation of individual polyethylene nanofibers fabricated by electrospinning with different deposition parameters. Measurement results show that the nanofiber thermal conductivity depends on the electric field used in the electrospinning process, with a general trend of higher thermal conductivity for fibers prepared with stronger electric field. Nanofibers produced at a 45 kV electrospinning voltage and a 150 mm needle-collector distance could have a thermal conductivity of up to 9.3 W m(-1) K(-1), over 20 times higher than the typical bulk value. Micro-Raman characterization suggests that the enhanced thermal conductivity is due to the highly oriented polymer chains and enhanced crystallinity in the electrospun nanofibers.
authors.affiliation: Department of Mechanical Engineering, Vanderbilt University, Nashville, TN 37235, USA. deyu.li@vanderbilt.edu.
authors.forename: Jian
authors.initials: J
authors.lastname: Ma
authors.forename: Qian
authors.initials: Q
authors.lastname: Zhang
authors.forename: Anthony
authors.initials: A
authors.lastname: Mayo
authors.forename: Zhonghua
authors.initials: Z
authors.lastname: Ni
authors.forename: Hong
authors.initials: H
authors.lastname: Yi
authors.forename: Yunfei
authors.initials: Y
authors.lastname: Chen
authors.forename: Richard
authors.initials: R
authors.lastname: Mu
authors.forename: Leon M
authors.initials: LM
authors.lastname: Bellan
authors.forename: Deyu
authors.initials: D
authors.lastname: Li