A study of molecular motions in grafted PIB and grafted EP copolymer using NMR and DSC

✍ Scribed by Fang Chen; Vincent J. McBrierty; Shannong Zhu

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 448 KB
• Volume: 26
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(90)90015-v

✦ Synopsis

Polyisobutylene and ethylene-propylene copolymers were grafted with maleic anhydride following reaction with polyamine. The molecular motion of these modified samples were studied by NMR and DSC methods. Comparisons of NMR and DSC results for the grafted and ungrafted samples revealed that the polar groups inhibit the molecular motion of polymer because of their mutual interaction. This interaction is explained in terms of hydrogen bonding between the polar groups.