|
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
|
|
Tags
|
|
