Quantitative analysis of entropic stress effect on the structural rearrangement during pre-stabilization of PAN precursor fibers
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- 作者：Ehsanollah Nosratian Sabeta ; Parviz Nourpanaha ; pnx@aut.ac.ir" class="auth_mail" title="E-mail the corresponding author ; Shahram Arbabb
- 关键词：Polyacrylonitrile fibers ; Entropic shrinkage ; Structural rearrangement
- 刊名：Polymer
- 出版年：2016
- 出版时间：4 May 2016
- 年：2016
- 卷：90
- 期：Complete
- 页码：138-146
- 全文大小：2169 K
文摘
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The morphological indices of PAN fiber decrease due to entropic relaxation during Free Shrinkage thermal treatment.
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Rubbery flow behavior increases segmental motions followed by increase of amorphous and crystallites orientation indices.
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The morphological perfection results from incorporation of straight and oriented amorphous chains to crystallites.