Hildebrand-Scratchard theory

The temperature-dependent miscibility of fluorous biphasic systems [1] can be predicted by use of the Hildebrand-Scratchard or regular solution theory [2, 9]. According to this theory the critical temperature (T). above which the two liquids of a biphasic system mix in all ratios is dose to the phase-separation temperature of a biphasic system consisting of equal volumes of each phase ... [Pg.174]

The molecular weight of a solvent is a standard but underutilized component of the information on properties of solvents. Many solvent properties depend directly on their molecular weights. The hypothesis of Hildebrand-Scratchard states fliat solvent-solute interaction occurs when solvent and polymer segment have similar molecular weights. This is related to the hole theory according to which a solvent occupying a certain volume leaves the same volume free when it is displaced. This free volume should be sufficient to fit the polymer segment which takes over the position formerly occupied by the solvent molecule. [Pg.45]

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