Effects of positive and negative stretching on the structure and properties of polyacrylonitrile fibers in the pre-oxidation process
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- 2015.03.24
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- 2011.01
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서지정보
ㆍ발행기관 : 한국탄소학회
ㆍ수록지정보 : Carbon Letters / 12권 / 2호
ㆍ저자명 : LiangWang, WeiLu, LiZhang, LiweiXue, SeungKonRyu, Ri-guangJin
목차
1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusions
References
한국어 초록
Polyacrylonitrile (PAN) fibers were pre-oxidized in a temperature range of 180-275°C. The
effects of positive and negative stretching on the structure and morphology of PAN fiber in
the pre-oxidation process were studied by FTIR spectroscopy, XRD, and SEM. Mechanical
property changes were also investigated. No changes in the movement and intensity of functional groups of PAN fibers were caused by positive stretching of up to 10% and negative
stretching down to -8%. The crystal structure can be affected by the positive stretching and
negative stretching. The maximum strength is 479.81 MPa when the stretching is positive,
and the maximum strength is 420.55 MPa when the stretching is negative.
Key words: polyacrylonitrile, positive stretching, negative stretching, pre-oxidation
영어 초록
Polyacrylonitrile (PAN) fibers were pre-oxidized in a temperature range of 180-275°C. Theeffects of positive and negative stretching on the structure and morphology of PAN fiber inthe pre-oxidation process were studied by FTIR spectroscopy, XRD, and SEM. Mechanicalproperty changes were also investigated. No changes in the movement and intensity of functional groups of PAN fibers were caused by positive stretching of up to 10% and negativestretching down to -8%. The crystal structure can be affected by the positive stretching andnegative stretching. The maximum strength is 479.81 MPa when the stretching is positive,and the maximum strength is 420.55 MPa when the stretching is negative.Key words: polyacrylonitrile, positive stretching, negative stretching, pre-oxidation
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