A method to determine iodine desorption of high molecular weight syndiotactic poly(vinyl alcohol)/iodine complex film

Authors
Lyoo, WS Yeum, JH Choi, JH Ji, BC Ghim, HD Kim, JP Noh, TH Yoon, WJ
Citation
Ws. Lyoo et al., A method to determine iodine desorption of high molecular weight syndiotactic poly(vinyl alcohol)/iodine complex film, POLYM TEST, 20(5), 2001, pp. 503-507
Citations number
27
Categorie Soggetti
Material Science & Engineering
Journal title
POLYMER TESTING
ISSN journal
01429418 → ACNP
Volume
20
Issue
5
Year of publication
2001
Pages
503 - 507
Database
ISI
SICI code
0142-9418(2001)20:5<503:AMTDID>2.0.ZU;2-7
Abstract
A method to calculate the iodine desorption of high molecular weight syndio tactic PVA (s-PVA)/iodine film in water was suggested, which was achieved b y measuring the weight loss of s-PVA/iodine film and the solubility of s-PV A film after immersion in water. The degree of solubility of s-PVA film in water at 80 degreesC was below 3% and the iodine desorption of s-PVA/iodine film at the same temperature was limited to below 13%, while atactic PVA h im is completely soluble over 50 degreesC. The desorption of iodines in wat er was strongly affected by the dissolution of PVA. The longer soaking time gave the larger desorption of iodine regardless of immersion temperature. The iodine desorption of s-PVA/iodine film in hot water decreased with incr easing drawing temperature and draw ratio. (C) 2001 Published by Elsevier S cience Ltd.