Abstract
A study has been made of the properties of films prepared from PVC plastisols modified by oligoester acrylates. Extremal dependences have been revealed for the glass temperature T g and the yield point T y of the cured thermoreactive PVC plastisols plotted against the concentration of the polymerizable component. It is shown that rheological, thermomechanical and physicomechanical properties of the plasticized PVC depend on the degree of polymerization of oligoester acrylates under conditions of dilution by nonreactive dioctylphthalate. Light has been shed on the role of oligoester acrylate functionality. The regularities obtained are hypothetically explained from the viewpoint of the crosslinking process taking place via a stage of β-polymerization and in terms of the microheterogeneity of the polymer-oligomer system.
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