EFFECTS OF DEFORMATION-INDUCED ORIENTATION ON CYCLIZATION AND OXIDATION OF POLYACRYLONITRILE FIBERS DURING STABILIZATION PROCESS

Jie Liu; Feng Lian; Zhao-kun Ma; Jie-ying Liang

doi:10.1007/s10118-012-1165-8

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EFFECTS OF DEFORMATION-INDUCED ORIENTATION ON CYCLIZATION AND OXIDATION OF POLYACRYLONITRILE FIBERS DURING STABILIZATION PROCESS

PAPER | Updated：2023-01-03

- EFFECTS OF DEFORMATION-INDUCED ORIENTATION ON CYCLIZATION AND OXIDATION OF POLYACRYLONITRILE FIBERS DURING STABILIZATION PROCESS
- Chinese Journal of Polymer Science Vol. 30, Issue 6, Pages: 786-795(2012)
- Affiliations：
  
  Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
- Author bio：
  
  **Jie Liu (刘杰), E-mail: liuj@mail.buct.edu.cn
- Funds：
- DOI：10.1007/s10118-012-1165-8
  CLC：
- Received：12 December 2011，
  
  Revised：2012-02-15，
  
  Accepted：12 March 2012，
  
  Published：2012-11
- Accepted：
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Jie Liu, Feng Lian, Zhao-kun Ma, et al. EFFECTS OF DEFORMATION-INDUCED ORIENTATION ON CYCLIZATION AND OXIDATION OF POLYACRYLONITRILE FIBERS DURING STABILIZATION PROCESS[J]. Chinese Journal of Polymer Science, 2012, 30(6): 786-795.
DOI：

Jie Liu, Feng Lian, Zhao-kun Ma, et al. EFFECTS OF DEFORMATION-INDUCED ORIENTATION ON CYCLIZATION AND OXIDATION OF POLYACRYLONITRILE FIBERS DURING STABILIZATION PROCESS[J]. Chinese Journal of Polymer Science, 2012, 30(6): 786-795. DOI： 10.1007/s10118-012-1165-8.

摘要

Abstract

Orientation of copolymer polyacrylonitrile (PAN) chains during their deformation prior to stabilization and the further effect on the stabilization were investigated in detail. Results reveal that the orientation of PAN chains presents a saturation point of 69.51% when the deformation ratio reaches approximately 1.07

meanwhile the cyclization rather than the oxidation has a stronger dependence on the orientation of PAN chains during stabilization. The cyclization is facilitated that the cyclization degree is increasing while the activation energy is decreasing obviously as a consequence of the developing orientation of PAN fibers before the saturation point; however

it is restrained during the further deformation of PAN fibers after the point. The resulting carbon fibers obtained from the PAN fibers prepared at the saturation point possess the highest mechanical properties of 4.07 GPa in tensile strength and 249.0 GPa in tensile modulus.

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