Original Article
  • Strength Increase of Medium Temperature-carbonized PAN Nano Fibers Made by Mechano-electrospinning
  • J.H Kim*,**, B. Bajaj*,***, S.J Yoon*, S.H Kim**, J.R Lee*,***†
  • *Advanced Materials Division, Korea Research Institute of Chemical Technology *†Advanced Materials Division, Korea Research Institute of Chemical Technology **Department of Fiber and Polymer Engineering, Hanyang University ***Nanomaterials Science and Engineering, University of Science and Technology (UST)
  • Strength Increase of Medium Temperature-carbonized PAN Nano Fibers Made by Mechano-electrospinning
  • J.H Kim*,**, B. Bajaj*,***, S.J Yoon*, S.H Kim**, J.R Lee*,***†
Abstract
In this study, the effect of phosphoric acid (PA) as a fiber spinning aid on the strength increase of polyacrylonitrile (PAN) nano-fibers by using modified mechano-electrospinning technologies has been analyzed. The medium carbonization temperature of 800°C has been selected for the future economic production of these new materials. The concentration of PAN in dimethyl sulfoxide (DMSO) was fixed as 5 wt%. The weight fraction of PA was selected as being 2%, 4%, 6%, and 8% in comparison to PAN. These solutions have been used to make the nanofibers. The mechano-electrospinning apparatus installed in KRICT was made by our own design. By using this apparatus the continous and highly aligned precursor nano-fibers have been obtained. The bundle of 50 well aligned nano diameter continuous fibers with the diametr of 10 microns with 6 wt% phosphoric acid for addition showed maximum mechanical properties of 1.6 GPa as tensile strength and 300 GPa as Young's modulus. The weight of final product can be increased 19%, which can improve the economical benefits for the application of these new materials.

Keywords: PAN, carbon nano fiber, electrospinning, strength, medium temperature

Keywords: PAN, carbon nano fiber, electrospinning, strength, medium temperature

This Article

  • 2013; 26(3): 160-164

    Published on Jun 30, 2013