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High modulus poly (vinyl alcohol) fibers by zone drawing

Published online by Cambridge University Press:  29 June 2016

Paul D. Garrett  and
David T. Grubb
Paul D. Garrett
Affiliation:
Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853
David T. Grubb
Affiliation:
Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853
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Abstract

Dried gel films of poly (vinyl alcohol) were drawn at high temperature using zone heating devices. Hot air zones 5 and 10 mm wide were used to draw the gels to draw ratios up to λ = 23 × at 200 °C. A 3.2 mm wide heated bar in direct contact with the specimen enabled use of drawing temperatures up to 235°C and resulted in draw ratios of 25-38 ×. Drawn films had a highly fibrous nature, were well oriented, and contained crystals about 10 nm long. Gel permeation chromatography studies of the material before and after drawing showed that drawing at high temperatures caused some changes in molecular weight and dispersity. Storage moduli of the fibers increased with draw ratio, reaching a high of 59 GPa at 31× but, in general, leveled off at high A. Low draw ratio (10-15 ×) fibers drawn in the 5 mm air zone had moduli comparable to high draw ratio (25-38 ×) fibers drawn with the high-temperature contact heater (20-60 GPa). Retraction studies showed that low modulus fibers, even those highly drawn, had low effective molecular extension. Drying the fibers increased both their room temperature modulus and glass transition temperature.

Type
Articles
Information
Journal of Materials Research , Volume 1 , Issue 6 , December 1986 , pp. 861 - 869
Copyright
Copyright © Materials Research Society 1986

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References

1Smith, P. and Lemstra, P. J., J. Mater. Sci. 15, 505 (1980).CrossRefGoogle Scholar
2Barham, P. J., Polymer 23, 1112 (1982).Google Scholar
3Cannon, C. G., Polymer 23, 1123 (1982).Google Scholar
4Smook, J. and Pennings, A. J., Polym. Bull. 10, 291 (1983).CrossRefGoogle Scholar
5Peguy, A. and Manley, R. St. J., Polym. Comm. 25, 39 (1984).Google Scholar
6Savitskii, A. V., Gorshkova, I. A., Demicheva, V. P., Frolova, I. L., and Shmikk, G. N., Vysokomol. Soed in Ser. A 26, 1801 (1984).Google Scholar
7Sawatari, C. and Matsuo, M., Colloid Polym. Sci. 263, 283 (1985).Google Scholar
8Kwon, Y. D., Kavesh, S., and Prevorsek, D. C., Patent, U.S. No. 4, 440, 711 (1984).Google Scholar
9Cebe, P. and Grubb, D. T., J. Mater. Sci. 20, 4465 (1985).CrossRefGoogle Scholar
10Kiho, H. and Asai, K. (unpublished).Google Scholar
11Kanezawa, M., Yamada, K., and Takayanagi, M., J. Polym. Sci. Polym. Phys. Ed. 24, 1227 (1979).Google Scholar
12Zhurkov, S. N., Levin, B. Y., and Savitskii, A. V., Dokl. Akad. Nauk. SSSR 186, 132 (1969).Google Scholar
13Tanaka, H., Suzuki, M., and Ueda, F., European Patent Application No. 0, 146, 084Google Scholar
14Sakurada, I., Polyvinyl Alcohol Fibers (Dekker, New York, 1985).Google Scholar
15Grubb, D. T., J. Mater. Sci. Lett. 3, 499 (1984).CrossRefGoogle Scholar
16Smith, P., Lemstra, P. J., and Booij, H. C., J. Polym. Sci. Polym. Phys. Ed. 19, 877 (1981).CrossRefGoogle Scholar
17Pritchard, J. G., Poly (vinyl alcohol): Basic Properties and Uses (Gordon and Breach, London, 1970).Google Scholar
18Wu, W., Simpson, P. G., and Black, W. B., J. Polym. Sci. Polym. Phys. Ed. 18, 751 (1980).CrossRefGoogle Scholar
19Smith, P., Lemstra, P. J., Pijpers, J. P. L., and Kiel, A. M., Colloid Polym. Sci. 259, 1070 (1981).Google Scholar
20Capaccio, G., Crompton, T. A., and Ward, I. M., J. Polym. Sci. Polym. Phys. Ed. 18, 301 (1980).CrossRefGoogle Scholar
21Wu, W. and Black, W. B., Polym. Eng. Sci. 19, 1163 (1979).CrossRefGoogle Scholar
22Pounder, E. R., The Physics of Ice (Pergamon, New York, 1965).Google Scholar
23Polymer Handbook, edited by Brandrup, J. and Davenport, E. H. (Wiley, New York, 1975).Google Scholar