Molecular mass distribution of polyenanthoamide obtained by anionic polymerization of enantholactam in solvent

✍ Scribed by P. Biernacki

• Publisher: Elsevier Science
• Year: 1985
• Tongue: English
• Weight: 584 KB
• Volume: 21
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(85)90159-4

✦ Synopsis

Al~tract--Molecular mass distribution has been investigated for polyenanthoamide obtained by the low-temperature anionic polymerization of enantholactam in the presence of the sodium salt of enantholactam and carbon dioxide in solvent. Fractionation was carried out by the method based upon division of the polymer between two liquid phases. Schulz's numerical criterion of heterogeneity calculated from the fractionation data was about 0.36. Number-average molecular mass of the polymer was about 95,000. Differential distribution curves indicate high homogeneity of the polymer. They are not similar to the differential curves of polyenanthoamides produced in polycondensation and cationic polymerization of enantholactam in bulk. Molecular mass distribution of anionic polyenanthoamide can be expressed by Tung's function. The differential distribution curve for the investigated polyamide has been compared with the curve for anionic polycaproamide produced in solvent.