Syntheses and properties of ethylene sulphide-isobutylene sulphide copolymers and their unsaturated terpolymers

✍ Scribed by A. Roggero; L. Zotteri; A. Proni; A. Gandini; A. Mazzei

• Publisher: Elsevier Science
• Year: 1976
• Tongue: English
• Weight: 404 KB
• Volume: 12
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(76)90127-0

✦ Synopsis

The synthesis with anionic catalysts and the characterization of ES-IBS copolymer and ES-IBS-ATE terpolymer are reported (ES, IBS, ATE and PS = ethylene sulphide, isobutylene sulphide, 3-allyloxy-l,2-epithiopropane and propylene sulphide respectively). For ES-IBS copolymer with 35-55% ES, nearly amorphous structures, were obtained. Microstructures, investigated by 13C-NMR, have been compared with that of the ES-PS copolymer; the ES-IBS copolymer has greater blockiness than ES-PS. Some preliminary results on the properties of ES-IBS-ATE unsaturated terpolymer are also reported and compared with those of the known ES-PS-ATE terpolymer. The good swelling values shown by the former are related to the possibility of obtaining amorphous structures with a high ES content.