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The Effect of Sulfonation Level and Molecular Weight on the Tensile Properties of Polyoxadiazoles

GKSS Research Centre Geesthacht GmbH, Institute of Materials Research, Max Planck Str. 1, D-21502, Geesthacht, Germany

^* To whom correspondence should be addressed.

	Abstract

The tensile properties of sulfonated polyoxadiazoles were studied as a function of molecular weight and sulfonation level. All sulfonated polyoxadiazoles synthesized through a polycondensation reaction of the hydrazine sulphate salt and a dicarboxylic acid in poly(phosphoric acid) exhibit rigid-ductile behavior with high Young's modulus (3–4 GPa) and with larger elongations at break (up to 120%). Sulfonated polyoxadiazoles with maximum reproducible tensile strength (190 6.9 MPa) could be synthesized in the frame of time of 4–5 h.

Key Words: Polyoxadiazole, molecular weight, tensile properties

First published on November 28, 2008
High Performance Polymers 2008, doi:10.1177/0954008308097458


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