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Unperturbed dimensions of polystyrene in mixed solvents at high temperature

At 371.5 K, which is the θ-temperature for polystyrene (PS) in 3-methyl cyclohexanol (MC), intrinsic viscosities [η] have been measured for PS samples of different relative molar mass M in mixtures of MC with a thermodynamically good solvent 1,2,3,4-tetrahydronaphthalene over the whole range of solv...

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Bibliographic Details
Published in:European polymer journal 1982, Vol.18 (8), p.735-739
Main Authors: Abdel-Azim, A.-A.A., Huglin, M.B.
Format: Article
Language:English
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Summary:At 371.5 K, which is the θ-temperature for polystyrene (PS) in 3-methyl cyclohexanol (MC), intrinsic viscosities [η] have been measured for PS samples of different relative molar mass M in mixtures of MC with a thermodynamically good solvent 1,2,3,4-tetrahydronaphthalene over the whole range of solvent composition. Eleven graphical procedures have been utilised and assessed in deriving the unperturbed polymer dimensions expressed as K θ (in the relation [η] = K θM 1 2 α 3 where α is the expansion factor). For those procedures concluded to be the most reliable, there was no influence of binary solvent composition: the value of K θ = 78 (±1) × 10 −3 dm 3 kg −1 was the same as that obtained directly under θ-conditions.
ISSN:0014-3057
1873-1945
DOI:10.1016/0014-3057(82)90105-7