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Elastic modulus of poly(ethylene oxide) determined from the Raman longitudinal acoustic mode

✍ Scribed by Kigook Song; Samuel Krimm

Publisher: John Wiley and Sons
Year: 1990
Tongue: English
Weight: 413 KB
Volume: 28
Category: Article
ISSN: 0887-6266
DOI: 10.1002/polb.1990.090280105

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✦ Synopsis

Abstract

The chain modulus of poly(ethylene oxide) is determined by the Raman longitudinal acoustic mode method with the aid of a normal coordinate analysis and found to be 1.3 × 10^11^ dyn/cm^2^. Our normal mode calculations provide a clear basis for explaining the discrepancy between chain moduli determined from Raman and x‐ray experiments. They show that the uncorrected Raman modulus of helical polymers reflects the presence of interchain interactions and therefore should not be taken as the correct elastic modulus of a single chain.

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