Structure of semirigid polyamides with bulky groups in backbone

✍ Scribed by Chaobin He; Anselm C. Griffin; Alan H. Windle

• Book ID: 101253391
• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 287 KB
• Volume: 72
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19990418)72:3<309::aid-app1>3.0.co;2-2

✦ Synopsis

The structure of a range of systematically synthesized polyamides, as well as some corresponding component molecular fragments, were studied using wide angle X-ray scattering and computer modeling methods. The molecules all contained tetrasubstituted biphenyls within the amide components, while the aliphatic acid components contained different lengths of the alkyl sequence. A model representing the molecular packing in fiber samples is proposed. It indicates that the polymer backbones are organized in a distorted hexagonal lattice while the intervening pendant side groups still remain randomly packed.