Effect of trunk polymer orientation on ionic vinyl monomer grafting reaction

✍ Scribed by S. Shkolnik; A. Mey-Marom

• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 613 KB
• Volume: 25
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(89)90147-x

✦ Synopsis

Mono-and bioriented ethylene-vinyl alcohol (EVAL) copolymer films were grafted by means of the electron beam pre-irradiation method with the potassium salt of styrenesulphonic acid (SSKS). The influences of pre-irradiation dose, reaction temperature and monomer concentration on grafting degree were determined for EVAL films with different drawing orientations. The dependence of the initial grafting rate on these parameters was found to be influenced by the morphology of the trunk polymer. The inhibitory effect of tert-butyl catechol, ferric chloride and Mohr salt on homopolymerization, as well as on the grafting reactions, was followed. Promotion of grafting by sodium acetate was established. Film dimension changes, induced by grafting, revealed a significant influence of EVAL morphology on the location of SSKS grafted chains.