Influence of solvent on measurement of cohesive energy density of polystyrene
作者： JMG Cowie , RJ Ranson , W Burchard , None
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摘要: The solubility parameter (δ2) of polystyrene was measured by the maximum [δ] method in four series solvents which were structurally different. In each case δ2 varied with solvent used, from 8·75 to 9·25 (cal/ml)1/2 enthalpy (XH), calculated for dissolved at least one member series, then used derive δ2, and little or no variation observed. average value = 9·16 ± 0·1 It has been shown that determination [η]max can be solvent-dependent because influence entropy term Xs. concluded if reliable values are obtained, they should estimated XH.
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