Sedimentation in concentrated polystyrene solutions and the observation of an “anomaly” in a good solvent

Sedimentation coefficients are reported for three polystyrene fractions (molecular weights 1.1 × 10 5, 3.9 × 10 5 and 1.8 × 10 6) in toluene and trans-decalin (θ-conditions) up to high concentrations. The difference between the sedimentation behaviour in good and poor solvents is discussed; an “anom...

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Bibliographic Details
Published in:European polymer journal 1977, Vol.13 (8), p.683-687
Main Authors: Nyström, Bo, Porsch, Bedřich, Sundelöf, Lars-Olof
Format: Article
Language:English
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Summary:Sedimentation coefficients are reported for three polystyrene fractions (molecular weights 1.1 × 10 5, 3.9 × 10 5 and 1.8 × 10 6) in toluene and trans-decalin (θ-conditions) up to high concentrations. The difference between the sedimentation behaviour in good and poor solvents is discussed; an “anomalous” effect was observed in toluene in a concentration region where incipient entanglement is likely.
ISSN:0014-3057
1873-1945
DOI:10.1016/0014-3057(77)90203-8