The solid-gel transition temperature

The Solid—Gel Transition Temperature. This temperature, T, is a measure of plasticizer activity and is the temperature at which a single grain of PVC dissolves ia excess plasticizer. The more efficieat plasticizers show lower values of as a result of their higher solvatiag power. This can be correlated with the ease of processiag of a given plasticizer, but all measurements should be conducted with a control PVC resia siace clearly the choice of resia has an effect here also. 

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