We have studied the nonisothermal crystallization of nylon 6 polymers using a differential scanning calorimetry technique. Our nylon 6 samples had molecular weights in the range of 11,000-43,000 g/mol (weight average) and polydispersities ( Mw /Mn ) of 1.8-3.0. We evaluated the effects of molecular weight, polydispersity, and moisture content of nylon 6 on the kinetic crystallizability Gc. Because Gc was sensitive to these variables, we concluded that it is an important parameter for understanding the non isothermal crystallization kinetics involved in the solidification of the polymer melt, which takes place in the polymer processing.
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