Abstract
By using the turbidity ratio and turbidity difference methods, experiments were carried out in order to contribute to the elucidation of the mechanism of formation and disappearance of turbidity in the poly(2-hydroxyethyl methacrylate) gel swollen in butanol, due to a change in temperature. It appears that along with the microseparated phase (butanol droplets), the existence of major heterogeneities in the network density (local differences in the polymer concentration) with variable size and a relative refractive index, called fluctuation microregions, also participate in these processes. The role of microregions was examined, and the processes were qualitatively characterized.
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