Effect of Nanofiber Orientation and Annealing on the Structure and Properties of Polyimide Nanowebs 


Vol. 23,  No. 2, pp. 335-342, Feb.  2022
10.1007/s12221-021-3362-y


PDF
  Abstract

Polyimide (PI) nanowebs were prepared by imidization of their precursors, polyamic acid (PAA) nanowebs, fabricated by electrospinning with various process variables, and then subjected to an additional hot drawing process. Their random and uniaxial morphologies of PAA and PI nanowebs could be formed by controlling the collecting roller speed of electrospinning apparatus. The SEM image of the PI nanoweb showed that high collecting-roller speed and hot drawing effectively aligned the nanofibers in the PI nanowebs. Wide-angle X-ray diffraction (WAXD) analysis was performed to investigate the crystalline orientation of PI in the nanowebs and confirmed that annealing highly-aligned PI nanowebs imparted enhanced crystallinity of PI nanowebs. We were able to increase the tensile strength of the PI nanoweb from 28.6 MPa to 58.4 MPa by raising the collecting roller speed from 250 rpm to 1500 rpm and increased to a maximum of 83.2 MPa through an additional hot drawing at 400

  Statistics
Cumulative Counts from November, 2022
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.


  Cite this article

[IEEE Style]

I. J. Lee, Y. S. Park, C. W. Park, D. H. Baik, "Effect of Nanofiber Orientation and Annealing on the Structure and Properties of Polyimide Nanowebs," Fibers and Polymers, vol. 23, no. 2, pp. 335-342, 2022. DOI: 10.1007/s12221-021-3362-y.

[ACM Style]

Il Jae Lee, Yo Sub Park, Chae Won Park, and Doo Hyun Baik. 2022. Effect of Nanofiber Orientation and Annealing on the Structure and Properties of Polyimide Nanowebs. Fibers and Polymers, 23, 2, (2022), 335-342. DOI: 10.1007/s12221-021-3362-y.

Search
(IN TITLE, AUTHOR, ABSTRACT,KEYWORDS)

Advanced Search ▼

POPULAR KEYWORDS
(TOP 10 KEYWORDS)

Recent Publications
(LAST 3 YEARS)

pISSN : 1229 - 9197
eISSN : 1875 - 0052

Impact Factor(2022): 2.5