Production and properties of polyacenaphthylene—V dilute solution properties

✍ Scribed by Henry Agbaje; Jürgen Springer

• Publisher: Elsevier Science
• Year: 1986
• Tongue: English
• Weight: 426 KB
• Volume: 22
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(86)90072-8

✦ Synopsis

Abstraet--Polyacenaphthylene was synthesized by thermal bulk polymerization, fractionated into I I fractions by fractional precipitation and characterized by gel permeation chromatography, light scattering and osmometry. Long chain branching was observed in polyacenaphthylenes with 3~t w > l × 106 g/mol. 0-temperatures of branched and linear polyacenaphthylenes were determined in 1,2-dichloroethane and are different in magnitude. Polyacenaphthylene undergoes chemical degradation in manufacturers' grade 1,2-dichloroethane. Intrinsic viscosities in benzene, toluene, tetrahydrofuran at 25~C, and in 1,2-dichloroethane at 41.I°C have been measured and the Mark-Houwink constants of the viscositymolar mass relationship evaluated.