Abstract
The solvent induced crystallization phenomenon (SINC) was studied for syndiotactic polypropylene quenched from the melt at 0 °C and kept at this temperature a for long time. In these conditions a mesophase having the chains in trans-planar conformation was formed. The interaction polymer-solvent with liquids having different solubility parameters, derived by both the swelling and the weight uptake, considerably varies among the different liquids, showing a maximum corresponding to carbon tetrachloride (δ=8.6). A smaller maximum was found for chloroform (δ=9.3). These two maxima were attributed to interaction either with the amorphous phase or with the trans-planar mesophase.
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