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Theory and Simulation of Fiber Texture Formation and Rheology of Carbonaceous Mesophase Fibers

Published online by Cambridge University Press:  15 March 2011

A. D. Rey
A. D. Rey*
Affiliation:
Department of Chemical Engineering, Mcgill University, 3610 University Street. Montreal, PQ H3A 2B2, Canada
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Abstract

Carbonaceous mesophases are discotic nematic liquid crystals that are spun into high performance carbon fibers using the melt spinning process. The spinning process produces a wide range of different fiber textures and cross-sectional shapes. Circular planar polar (PP), circular planar radial (PR) textures, ribbon planar radial (RPR), and ribbon planar line (RPL) textures are ubiquitous ones. This paper presents, solves, and validates a model of mesophase fiber texture formation based on the classical Landau-de Gennes theory of liquid crystals, adapted here to carbonaceous mesophases. The effects of fiber cross-sectional shape and elongational flow on texture formation are characterized. Emphasis is on qualitative model validation using existing experimental data [1, 2]. The results provide additional knowledge on how to optimize and control mesophase fiber textures.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 709: Symposium CC – Advances in Liquid Crystalline Materials and Technologies , 2001 , CC8.5.1
Copyright
Copyright © Materials Research Society 2002

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References

REFERENCES

[1] Edie, D.D., Robinson, K.E., Fleurot, O., Jones, S.P. SP and Fain, C.C., Carbon, 32, 1045.Google Scholar
[2] McHugh, J.J., Ph.D Thesis, Clemson University (1994).Google Scholar
[3] Hurt, R.H. and Chen, Z.Y., Physics Today, March, 39 (2000).Google Scholar
[4] Peebles, L.H., Carbon Fibers-Formation, Structure, and Properties, (Boca Raton, FL: CRC) (1995).Google Scholar
[5] Ho, A.S.K. and Rey, A.D., Rheologica Acta, 30, 77 (1991).Google Scholar
[6] Farhoudi, Y. and Rey, A.D., Rheologica Acta, 32, 207 (1993).Google Scholar
[7] Singh, A.P. and Rey, A.D., Journal of Non-Newtonian Fluid Mechanics, 94, 87 (2000).Google Scholar
[8] Yan, J. and Rey, A.D., Texture Formation in Carbonaceous Mesophase Fibers, Physical Review E, in press (2002).Google Scholar
[9] Zimmer, J.E. and White, J.L., Advances in Liquid Crystals, 5, 157 (1983).Google Scholar
[10] Gennes, P.G. de J.and Prost, The Physics of Liquid Crystal 2nd edn, (Oxford: Clarendon) (1993).Google Scholar
[11] Yan, J, AD, Rey, Modeling and Simulation in Materials Science and Engineering, 2001, submitted.Google Scholar
[12] AD, Rey, Liquid Crystals, 7, 315 (1990).Google Scholar
[13] MJE, O'Rourke, DK, Ding, EL, Thomas, Macromolecules, 34, 6658 (2001).Google Scholar
[14] RK, Bharadwaj, TJ, Bunning and BL, Farmer, Liquid Crystals, 27, 591 (2000).Google Scholar
[15] Longa, L, Monselesan, D and HR, Trebin, Liquid Crystals, 2, 769 (1987).Google Scholar
[16] DW, Berreman and Meiboom, S, Physical Review A, 30, 1955 (1984).Google Scholar
[17] Doi, M and BJ, Edwards, The Theory of Polymer Dynamics, (Oxford: Clarendon) (1986).Google Scholar
[18] Tsuji, T, and AD, Rey, Macromolecular Theory and Simulation, 7, 623 (1998).Google Scholar
[19] FA, Morrison, Understanding Rheology, (New York: Oxford University Press) (2001).Google Scholar