Turbidimetric titration of nylon 66

✍ Scribed by Howard, G. J.

• Publisher: Wiley (John Wiley & Sons)
• Year: 1963
• Tongue: English
• Weight: 516 KB
• Volume: 1
• Category: Article
• ISSN: 0449-2951
• DOI: 10.1002/pol.1963.100010811

✦ Synopsis

Abstract

The turbidimetric titration of nylon 66 is reported. It is shown that the precipitation of any species is independent of polymer species differing in molecular weight and that the precipitability is a function of both polymer concentration and degree of polymerization. The construction of molecular weight distributions from turbidity results is described. The distribution obtained for a reference polymer is sharper than that from a careful fractional precipitation but is superior to a simple single‐stage preparative fractionation. Distribution curves are given for other nylon 66 polymers, including photodegraded yarns.