Production and properties of polyacenaphthylene VII. Unperturbed dimensions and chain conformational studies of polyacenaphthylene

✍ Scribed by Henry Agbaje; Jürgen Springer

• Publisher: Elsevier Science
• Year: 1987
• Tongue: English
• Weight: 293 KB
• Volume: 23
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(87)90149-2

✦ Synopsis

The unperturbed dimensions of polyacenaphthylene in solution were determined from light scattering, osmotic and viscometric data in thermodynamically good solvents and in the theta solvent, 1,2-dichloroethane, using direct and indirect evaluation methods. The estimated value of the steric factor, c~, shows polyacenaphthylene to be a relatively rigid polymer in contrast to the results obtained from hydrodynamic investigations. An attempt was made to explain this discrepancy in terms of a tightly coiled conformation is solution due to weak links in the polymer chain.