Viscosity and light scattering measurements of poly(2-fluoro-p-phenylene-2-fluoroterephthalamide)

✍ Scribed by Markus C. Grob; Peter Schurtenberger; Ulrich W. Suter

• Book ID: 102941398
• Publisher: John Wiley and Sons
• Year: 1995
• Tongue: English
• Weight: 696 KB
• Volume: 196
• Category: Article
• ISSN: 1022-1352
• DOI: 10.1002/macp.1995.021960503

✦ Synopsis

We report on the characterization of the conformational properties of the fully aromatic polyamides poly(2-fluoro-p-phenylene-2-fluoroterephthalamide) (FPFT) in methanesulfonic acid using dynamic and static light scattering and viscosity measurements. The results are in quantitative agreement with a model of polydisperse wormlike chains for the solution conformation of FPFT. A comparison with the results obtained for the unsubstituted polymer poly(p-phenylenterephthalamide) (PFTA) under the same experimental conditions indicates that the introduction of halogen substituents on the aromatic rings has only a weak influence on the chain flexibility. a) Current address: DuPont Central Research & Development, Experimental Station, Wilmingb, Systematic IUPAC name: poly[imino(fluoro-1,4-phenylene)imino(fluoroterephthaloyl].