Properties of syndiotactic-rich poly(vinyl alcohol) thin film in water. III. Contraction and extension of drawn and annealed thin film in water
Article first published online: 9 MAR 2003
Copyright © 1986 John Wiley & Sons, Inc.
Journal of Applied Polymer Science
Volume 31, Issue 7, pages 2139–2144, 20 May 1986
How to Cite
Yamaura, K. and Matsuzawa, S. (1986), Properties of syndiotactic-rich poly(vinyl alcohol) thin film in water. III. Contraction and extension of drawn and annealed thin film in water. J. Appl. Polym. Sci., 31: 2139–2144. doi: 10.1002/app.1986.070310717
- Issue published online: 9 MAR 2003
- Article first published online: 9 MAR 2003
- Manuscript Accepted: 7 NOV 1985
- Manuscript Received: 10 JUN 1985
Contraction and extension behaviors in water for drawn (four times original length) and annealed (at 60–215°C) thin films of poly(vinyl alcohol) (PVAVTFA) derived from vinyl trifluoroacetate have been examined. At a constant temperature of 25°C, drawn films annealed at 60–190°C contracted after a certain standing time. Length of films annealed at 200°C did not change after standing of 20 min and film annealed at 215°C extended very little. As the temperature was raised, the drawn films annealed at 60–190°C contracted further until a certain temperature and then extended. The drawn film annealed at 200°C first started contraction at 70°C. The drawn film annealed at 215°C extended further very little until 75°C and then contracted very little until 99°C (in boiling water). In standing at 99°C, it contracted very little with standing and resisted without breaking for 300 min.