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Abstract

Carbon fibres are still expensive. Although in recent years, many attempts have been made to use commercial polyacrylonitrile (PAN) fibres instead of special PAN fibres as a carbon fibre precursor in order to reduce price, this replacement shows some difficulties in processing and properties of final carbon fibres. In the present research, thermal properties of commercial and special PAN fibres are investigated by thermal analysis methods such as differential scanning calorimetry and thermogravimetric analysis in order to find the effect of chemical composition and characterisation of these precursors on stabilisation conditions and properties of resultant carbon fibres. Results show that the type of comonomers used in acrylic fibres changes the stabilisation conditions. Addition of sodium 2-methyl-2-acrylamidopropane sulphonate (SAMPS) and sodium methallyl sulphonate (SMS) comonomers to improve dyeability of commercial acrylic fibres will increase cyclisation reaction initiation and stabilisation temperature, but the effect of SAMPS in this respect is more harmful and the presence of SAMPS produces carbon fibres with lower tensile strength. On the other hand, addition of itaconic acid comonomer decreases cyclisation reaction initiation and stabilisation temperatures and finally gives carbon fibres desirable properties.

Keywords

COMMERCIAL PAN FIBRES THERMAL PROPERTIES STABILISATION CARBON FIBRES TENSILE STRENGTH

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References

Bansal

R. C.

and Donnet

J. B.

: ‘Comprehensive polymer science’,Vol. 6, 501-520; 1990, Oxford, Pergamon Press.

Lee

S. M.

: ‘International encyclopedia of composites’,Vol. 1, 197-210; 1990, New York, VCH.

Walsh

P. J.

: in ‘ASM handbook’,Vol. 21, ‘Composites’, 49-53; 2001, Materials Park, OH, ASM International.

Donnet

J. B.

and Bansal

R. C.

: ‘Carbon fibers’; 1990, New York, Marcel Dekker.

Kostikov

V. I.

: ‘Fibre science and technology’, 231–240; 1995, London, Chapman & Hall.

Gupta

D. C.

: Synth Fibers, 1984, Oct./Dec.,14–20.

Garg

K. K.

: Synth Fibers, 1985, Apr./Jun.,29–35.

Masson

J. C.

: ‘Acrylic fiber technology and applications’, 363–365; 1995, New York, Marcel Dekker.

Mukhopadhyay

S. K.

and Zhu

: Text. Res. 1, 1995, 65, 25–31.

10.

Gupta

and Harrison

I. R.

: Carbon, 1996, 34, 1427–1445.

11.

Rajalingam

and Radhakrishnan

: JMS Rev. Macromot Chem. Phys., 1991, C31,301–310.

12.

Ezekiel

H. M.

: ‘Formation of very high modulus graphite fibers from a commercial polyacrylonitrile yarn’, Composite and Fibrous Materials Branch, Nonmetallic Materials Divisions, Air Force Materials Laboratory, Wright Patterson Air Force Base, OH, USA, 184.

13.

Bahl

O. P.

and Manocha

L. M.

: Chem. Age India, 1987, 38, 181–188.

14.

Edie

D. D.

: Carbon, 1998, 36, 345–362.

15.

Bahl

O. P.

, Manocha

L. M.

, Jain

G. C.

, Chari

S. S.

and Bhatia

G. J.

: J. Sci. Ind. Res., 1997, 38, 537–554.

16.

Spaseska

: ‘Influence of precursor prehistory on carbon fiber characteristics’, Faculty of Technology and Metallurgy, University Kiril and Metodij, Skopje, Yugoslavia, 149.

17.

Fitzer

, Frohs

and Heine

: Carbon, 1986, 24, 387–395.

18.

Mathur

R. B.

, Bahl

O. P.

and Mittal

: Carbon, 1992, 30, 657–663.

19.

Mittal

, Bahl

O. P.

, Mathur

R. B.

and Sandie

N. K.

: Carbon, 1994, 32, 1133–1136.

Effect of thermal characteristics of commercial and special polyacrylonitrile fibres on the fabrication of carbon fibres

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