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Authors Jariyavidyanont, K. ; Janke, A. ; Androsch, R.
Title Crystal self-nucleation in polyamide 11
Date 19.06.2019
Number 56821
Abstract Self-nucleation of crystallization of polyamide 11 (PA 11) has been studied by thermo-optical microscopy. Spherulitically arranged lamellar crystals with a melting peak temperature of 187·°C formed via heterogeneous nucleation on slow cooling the equilibrium melt and subsequent reorganization on slow heating. As a function of the maximum temperature of the melt after their complete melting, subsequent non-isothermal crystallization accelerates, caused by presence of self-nuclei. The number of self-nuclei decreases with increasing temperature of the melt and approaches zero at a temperature about 13·K higher than the melting temperature of the initially present crystals. Crystallization of the melt containing self-seed leads to formation of a distinctly finer spherulitic morphology than melt-crystallization in absence of self-seed at identical conditions.
Publisher Thermochimica Acta
Wikidata
Citation Thermochimica Acta 677 (2019) 139-143
DOI https://doi.org/10.1016/J.TCA.2019.02.006
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