Paper Title:
Effect of Die-Swell Ratio on Polyacrylonitrile As-Spun Fiber Formation
  Abstract

In this paper, the effect of die-swell ratio on the microstructure and properties of as-spun fibers was systematically analyzed by electron microprobe analysis (EMPA) and the measurement of die-swell ratio, boiling-water shrinkage, porosity and mechanical properties. The formation mechanism of the spin orientation and skin-core structure were revealed. It was shown that with different die-swell ratio, the spinodal decomposition speed and the orientation degree between the outer and inner of as-spun fibers is different, which leads to a difference of denseness and hardness between the outer and inner, thus the skin-core and porous structures are formed. A small die-swell ratio leads to an enhanced spin orientation, a reduced skin-core difference and a more compact and homogeneous microstructure. As a result, the breaking tenacity of as-spun fibers and resultant precursors all increased.

  Info
Periodical
Advanced Materials Research (Volumes 295-297)
Chapter
Chapter 1: Materials Properties
Edited by
Pengcheng Wang, Liqun Ai, Yungang Li, Xiaoming Sang and Jinglong Bu
Pages
1532-1535
DOI
10.4028/www.scientific.net/AMR.295-297.1532
Citation
B. H. Ji, "Effect of Die-Swell Ratio on Polyacrylonitrile As-Spun Fiber Formation", Advanced Materials Research, Vols. 295-297, pp. 1532-1535, 2011
Online since
July 2011
Authors
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Dae H. Kang, Min S. Yoo, Sung S. Park, Nack J. Kim
Abstract:A study has been made on the tensile and creep properties of squeeze and die cast Mg alloys, with emphasis on the effect of second phase...
521
Authors: P.K. Seo, C.G. Kang, Byung Min Kim
Abstract:Semisolid processing is now becoming of greater interest for the production of various parts than pressure die casting. In the rheo die...
526
Authors: Naret Intawong, Chatchawan Kantala, Watit Lotaisong, Narongrit Sombatsompop
Abstract:A novel rotating-die system was proposed to moderate the elastic swelling for molten polypropylene (PP) and wood/polypropylene (WPP)...
1491
Authors: Ehsan Soury, Amir Hossein Behravesh, Nathan Jafarian Jam, Ali Haghtalab
Chapter 1: Materials Science and Engineering
Abstract:This paper presents an experimental study on surface quality (roughness) for extruded wood plastic composites (WPC) in an extrusion process....
89
Authors: Qi Liang Zhang, Zeng Qiang Cao, Yun Quan Chen
Chapter 15: Materials Processing Technology
Abstract:By establishing an axisymmetric finite element model of the electromagnetic riveting (EMR) joint, we studied the influence of riveting die...
1968