Phase behavior and gelation of solutions of poly(vinylchloride)

✍ Scribed by H. Soenen; H. Berghmans

• Book ID: 103985278
• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 661 KB
• Volume: 2
• Category: Article
• ISSN: 0966-7822
• DOI: 10.1016/0966-7822(94)90002-7

✦ Synopsis

The phase behavior and the thermoreversible gelation of solutions of PVC in nitrobenzene has been studied. Two concentration domains have to be considered. At low polymer concentration isothermal annealing results in a relatively high degree of crystallinity without the formation of a gel network. At higher polymer content, cooling results in the formation of a thermoreversible gel of low crystallinity. This crystallinity increases after isothermal annealing. The influence of polymer content and annealing temperature is investigated. A model, based on the formation of cooperative intermolecular associations, is