Influence of accelerated aging on clay-reinforced polyamide 6

Kiliaris, P; Papaspyrides, CD; Pfaendner, R

dc.contributor.author	Kiliaris, P	en
dc.contributor.author	Papaspyrides, CD	en
dc.contributor.author	Pfaendner, R	en
dc.date.accessioned	2014-03-01T01:30:54Z
dc.date.available	2014-03-01T01:30:54Z
dc.date.issued	2009	en
dc.identifier.issn	0141-3910	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19674
dc.subject	Aging	en
dc.subject	Layered silicate nanocomposites	en
dc.subject	Polyamides	en
dc.subject	Thermo-oxidative degradation	en
dc.subject.classification	Polymer Science	en
dc.subject.other	Amides	en
dc.subject.other	Amino acids	en
dc.subject.other	Degradation	en
dc.subject.other	Fillers	en
dc.subject.other	Fourier transforms	en
dc.subject.other	Mechanical properties	en
dc.subject.other	Nanocomposites	en
dc.subject.other	Nanocrystalline alloys	en
dc.subject.other	Nylon polymers	en
dc.subject.other	Polyamides	en
dc.subject.other	Polymer matrix composites	en
dc.subject.other	Polymers	en
dc.subject.other	Silicates	en
dc.subject.other	Accelerated aging	en
dc.subject.other	Aging	en
dc.subject.other	Aging time	en
dc.subject.other	Chain scissions	en
dc.subject.other	Clay fillers	en
dc.subject.other	Degree of crystallinity	en
dc.subject.other	Elevated temperatures	en
dc.subject.other	Heat aging	en
dc.subject.other	Heat exposures	en
dc.subject.other	Layered silicate nanocomposites	en
dc.subject.other	Mechanical performance	en
dc.subject.other	Modified clays	en
dc.subject.other	Polyamide-6	en
dc.subject.other	Polymer degradations	en
dc.subject.other	Polymer modifications	en
dc.subject.other	Residence time	en
dc.subject.other	Short periods	en
dc.subject.other	Softening behaviors	en
dc.subject.other	Thermal and mechanical properties	en
dc.subject.other	Thermo-oxidative degradation	en
dc.subject.other	Thermo-oxidative stabilities	en
dc.subject.other	Unfilled polymers	en
dc.subject.other	Useful lifetimes	en
dc.subject.other	Virgin materials	en
dc.subject.other	Clay minerals	en
dc.title	Influence of accelerated aging on clay-reinforced polyamide 6	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.polymdegradstab.2008.11.016	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.polymdegradstab.2008.11.016	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	Organically modified clay-reinforced polyamide 6 was subjected to accelerated heat aging to estimate its long-term thermo-oxidative stability and useful lifetime compared to the virgin material. Changes in molecular weight, and thermal and mechanical properties were monitored and connected to the polymer modification encountered during aging. The incorporation of the clay filler was found to result in moderate polymer degradation during processing, which became more pronounced with aging time at elevated temperature, imparting discoloration. Post-crystallization was favoured by short periods of heat exposure, leading to an increase of crystalline content. Conversely, extended chain scission occurring after prolonged residence time negatively affected crystallites' size, lowering the degree of crystallinity. The aging-induced transformations of crystal structures correlated well with materials' mechanical performance, yielding initially hard and brittle specimens which gradually adopted a softening behavior. Relative to the unfilled polymer, the loss of ductility during aging was milder in the case of nano-composite, indicating that the clay filler restricted degradation, prolonging durability. (C) 2008 Elsevier Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Polymer Degradation and Stability	en
dc.identifier.doi	10.1016/j.polymdegradstab.2008.11.016	en
dc.identifier.isi	ISI:000264010500014	en
dc.identifier.volume	94	en
dc.identifier.issue	3	en
dc.identifier.spage	389	en
dc.identifier.epage	396	en