Catalyzed solid-state polyamidation

Vouyiouka, SN; Papaspyrides, CD; Pfaendner, R

dc.contributor.author	Vouyiouka, SN	en
dc.contributor.author	Papaspyrides, CD	en
dc.contributor.author	Pfaendner, R	en
dc.date.accessioned	2014-03-01T01:23:41Z
dc.date.available	2014-03-01T01:23:41Z
dc.date.issued	2006	en
dc.identifier.issn	1438-7492	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17093
dc.subject	Catalysts	en
dc.subject	Nylon 6,6	en
dc.subject	Phosphorus-containing compounds	en
dc.subject	Polyamides	en
dc.subject	Solid-state polymerization	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.classification	Polymer Science	en
dc.subject.other	Catalysis	en
dc.subject.other	Catalyst activity	en
dc.subject.other	Chemical modification	en
dc.subject.other	Extruders	en
dc.subject.other	Phosphorus compounds	en
dc.subject.other	Polycondensation	en
dc.subject.other	Catalytic performance	en
dc.subject.other	Nylon 6,6	en
dc.subject.other	Solid-state polymerization	en
dc.subject.other	Polyamides	en
dc.title	Catalyzed solid-state polyamidation	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/mame.200600254	en
heal.identifier.secondary	http://dx.doi.org/10.1002/mame.200600254	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	The current study is focused on key experiments on catalyzed SSP, examining the effect of selected phosphonates on the overall process rate. Catalyst incorporation was achieved through melt blending in a single screw extruder, providing a suitable and homogenous starting material for the reaction in the solid phase. More specifically, the post-polycondensation runs were performed in a fixed bed reactor under flowing nitrogen at 160 and 200 °C. The additives used were found to catalyze the reaction in the solid phase, resulting even in tripling the solution relativeviscosity after 4 h of SSP, Differences in the catalytic performance of the added materials were observed and correlated to the catalysts properties and morphology. An indicative potential catalysis mechanism is suggested, in which reactivity enhancement through partial attachment of the phosphorus compounds on the polyamide chain is the key step. Finally, the kinetics of the process were examined based on a power-law rate expression, which was further modified so as to relate the apparent SSP rate constant with the phosphorus concentration. © 2006 WILEY-VCH Verlag GmbH & Co. KGaA.	en
heal.publisher	WILEY-V C H VERLAG GMBH	en
heal.journalName	Macromolecular Materials and Engineering	en
dc.identifier.doi	10.1002/mame.200600254	en
dc.identifier.isi	ISI:000243314400005	en
dc.identifier.volume	291	en
dc.identifier.issue	12	en
dc.identifier.spage	1503	en
dc.identifier.epage	1512	en