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Title of Journal: J Polym Res

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Abbravation: Journal of Polymer Research

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Springer Netherlands

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DOI

10.1002/aenm.201470060

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1572-8935

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Nonisothermal crystallization kinetics of PA6 and

Authors: Hemlata S N Maiti
Publish Date: 2012/07/08
Volume: 19, Issue: 8, Pages: 9926-
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Abstract

The nonisothermal crystallization kinetics of neat PA6 and binary blends of PA6/SEBSgMA were investigated by means of differential scanning calorimetry at four different coolings rates Three macro kinetic models viz Avrami Jeziorny and Tobin were used to describe the nonisothermal crystallization kinetics Primary and secondary crystallization were analyzed by Avrami equation The results obtained by Avrami equation suggested that under nonisothermal condition the mechanism of primary crystallization is more complex while secondary crystallization showed one to three dimensional crystal growths Tobin model described the overall crystallization kinetics and results were almost similar to those of Avrami model The results obtained by Dobreva and Gutzowa method suggested that SEBSgMA did not act as a nucleating agent for PA6 Three isokinetic models AugisBennet Kissinger and Takhore have been used for the evaluation of the activation energy of nonisothermal crystallization kinetics process The value of activation energy ∆E slightly increases in the presence of 5 10 20 phr content of SEBSgMA and then decreases with at 35 and 50 phr contents of SEBSgMA These results showed that up to 20 phr SEBSgMA hinder the mobility of PA6 chain segments and at 35 and 50 phr SEBSgMA eases the mobility of PA6 chain segments

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