Dilute solutions of nylon 12—III. Intermolecular and intramolecular association of end-groups

✍ Scribed by M. Bohdanecký; B. Lánská; J. Šebenda; Z. Tuzar

• Book ID: 103073323
• Publisher: Elsevier Science
• Year: 1979
• Tongue: English
• Weight: 475 KB
• Volume: 15
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(79)90247-7

✦ Synopsis

An equation has been derived relating the Huggins viscometric coefficient, k u, and molecular weight of polymers which in a given solvent associate via end-group interactions forming linear and cyclic multimers. The equation was used to calculate the association constant (K,, = 2.2 × 102 tool/I) for nylon 12 from experimental data. Values of the constant of intramolecular cyclization of unimers were estimated: their dependence on polymer molecular weight was less steep than suggested by the theory of macrocyclic equilibria.