A device for on-line measurements of fiber birefringence is described. The system consists of a double beam detection method coupled to an interference fringe device, allowing a quasi-simultaneous measurement of the diameter. A sensitive determination of birefringence is possible using this method. An example is given of an application to a fiber spun from a solution of cellulose in aqueous N-methylmorpholine-N-oxide.
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References
1.
Bühler, F., Stadler, R., and Gronski, W., A New Experimental Device for Sensitive Birefringence Measurements, Makromol. Chem.187, 1295-1299 (1986 ).
2.
Hamza, A.A., Fonda, I.M., El Farahaty, K.A., and El-Tonsy, M.M., Interferometric Determination of the Optical Anisotropy of Poly(p-oxybenzoate-co-p-phenylene isophthalate ) 50 / 50 Composition Fibres. Polym. Comm.30, 186-189 (1989).
3.
Harris, P.H., Apparatus for Continuously Measuring Optical Retardation of Synthetic Filaments or Film. GB patent 2,052,049, 1980.
4.
Harris, P.H., Method and Apparatus for Measuring the Optical Retardation of Synthetic Filaments or Film, GB patent 2,066,458. 1980.
5.
Magnin, A., Etude Expérimentale de la Dépose d'Ensimage au Rouleau sur les Fibres Textiles , Doctoral Thesis, UJFGrenoble , 1983.
6.
Muller, R., and Froelich, D., New Extensional Rheometer for Elongational Viscosity and Flow Birefringence Measurements: Some Results on Polystyrene Melts, Polymer26, 1477-1482 ( 1985).
7.
Quenin, I., Précipitation de la Cellulose à Partir de Solutions dans les Oxydes d'Amines Tertiares: Application au Filage. Doctoral thesis, UJF Grenoble, 1985.
8.
Roche, E.J., and Davis, H.A., Measurement of Radial Birefringence Gradients in Fibers, Fiber Prod.12( 1 ), 51-56 (1984).
9.
Roche, E.J., Rubin, B., and Van Kavelaar, R.F. , Automated Digital Analysis of Fiber Interferograms , Textile Res. J.57, 371-378 ( 1987).
10.
Taylor, M.A. , Batchelder, D.N., and Odell, J.A., Flow-induced Birefringence in Polydiacetylene Solutions. Polym. Comm.29, 253-254 (1988).
11.
Yang, H.H., Chouinard, M.P., and Lingg, W.J.Birefringence of Highly Orientated Fibers, J. Polym. Sci. Polym. Phys. Ed.20, 981-987 (1982).
