Fibers and Polymers

, Volume 6, Issue 2, pp 121–126 | Cite as

Effects of blend ratio and heat treatment on the properties of the electrospun poly(ethylene terephthlate) nonwovens

  • Kwan Woo Kim
  • Keun Hyung Lee
  • Bong Seok Lee
  • Yo Seung Ho
  • Seung Jin Oh
  • Hak Yong KimEmail author


Semicrystalline poly(ethylene terephthalate) (cPET)/amorphous poly(ethylene terephthalate) with isophthalic acid (aPET) blends with 100/0, 75/25, 50/50, 25/75, and 0/100 by weight ratios were dissolved in a mixture of trifluoroacetic acid (TFA)/methylene chloride (MC) (50/50, v/v) and electrospun via the electrospinning technique. Solution properties such as solution viscosity, surface tension and electric conductivity were determined. The solution viscosity slightly decreased as aPET content increased, while there was no difference in surface tension with respect to aPET composition. The characteristics of the electrospun cPET/aPET blend nonwovens were investigated in terms of their morphology, pore size and gas permeability. All these measurements were carried out before and after heat treatment for various blend weight ratios. The average diameter of the fibers decreased with increasing aPET composition due to the decrease in viscosity. Also, the morphology of the electrospun cPET/aPET blend nonwovens was changed by heat treatment. The pore size and pore size distribution varied greatly from a few nanometers to a few microns. The gas permeability after heat treatment was lower than that before heat treatment because of the change of the morphology.


Electrospinning Morphology Pore size Gas transport properties Mechanical properties 


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Copyright information

© The Korean Fiber Society 2005

Authors and Affiliations

  • Kwan Woo Kim
    • 1
  • Keun Hyung Lee
    • 1
    • 2
  • Bong Seok Lee
    • 1
    • 3
  • Yo Seung Ho
    • 1
    • 3
  • Seung Jin Oh
    • 1
    • 3
  • Hak Yong Kim
    • 1
    • 3
    Email author
  1. 1.Department of Bionano System EngineeringChonbuk National UniversityChonjuKorea
  2. 2.Department of Advanced Organic Materials EngineeringChonbuk National UniversityChonjuKorea
  3. 3.Department of Textile EngineeringChonbuk National UniversityChonjuKorea

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