Morphological changes of poly(ethylene terephthalate-co-isophthalate) during solid state polymerization

Vouyiouka, SN; Filgueiras, V; Papaspyrides, CD; Lima, EL; Pinto, JC

dc.contributor.author	Vouyiouka, SN	en
dc.contributor.author	Filgueiras, V	en
dc.contributor.author	Papaspyrides, CD	en
dc.contributor.author	Lima, EL	en
dc.contributor.author	Pinto, JC	en
dc.date.accessioned	2014-03-01T02:11:28Z
dc.date.available	2014-03-01T02:11:28Z
dc.date.issued	2012	en
dc.identifier.issn	00218995	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29910
dc.subject	cold crystallization	en
dc.subject	crystallinity degree	en
dc.subject	poly(ethylene terephthalate)	en
dc.subject	secondary crystallization	en
dc.subject	solid state polymerization	en
dc.subject.other	Cold crystallization	en
dc.subject.other	Crystal morphologies	en
dc.subject.other	Crystallinities	en
dc.subject.other	Crystallinity degree	en
dc.subject.other	Fixed bed reactor	en
dc.subject.other	Mass fraction	en
dc.subject.other	Melting behavior	en
dc.subject.other	Morphological changes	en
dc.subject.other	Nonisothermal	en
dc.subject.other	Prepolymers	en
dc.subject.other	secondary crystallization	en
dc.subject.other	Secondary crystals	en
dc.subject.other	Short reaction time	en
dc.subject.other	solid state polymerization	en
dc.subject.other	Solid-phase	en
dc.subject.other	Bottles	en
dc.subject.other	Chemical reactors	en
dc.subject.other	Face recognition	en
dc.subject.other	Polyethylene terephthalates	en
dc.subject.other	Polymerization	en
dc.subject.other	Morphology	en
dc.title	Morphological changes of poly(ethylene terephthalate-co-isophthalate) during solid state polymerization	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/app.35452	en
heal.identifier.secondary	http://dx.doi.org/10.1002/app.35452	en
heal.publicationDate	2012	en
heal.abstract	Poly(ethylene terephthalate-co-isophthalate) (PETI) prepolymer was submitted to solid state polymerization (SSP) at 184-230°C in a fixed bed reactor, to study the evolution of morphological changes during the process. Short reaction times were selected to investigate crystallization phenomena during nonisothermal (heating) and isothermal SSP phases. More specifically, multiple PETI melting behavior was observed and attributed to secondary crystallization, the rate of which increased significantly with SSP temperature. Reaction time was also found to exert a positive effect on solid-phase perfection of secondary crystals, leading at each temperature to melting points close to the value of bottle-grade poly(ethylene terephthalate). Finally, the mass fraction crystallinity of the SSP grades was found to comply with the crystal morphology encountered. Copyright © 2011 Wiley Periodicals, Inc.	en
heal.journalName	Journal of Applied Polymer Science	en
dc.identifier.doi	10.1002/app.35452	en
dc.identifier.volume	124	en
dc.identifier.issue	6	en
dc.identifier.spage	4457	en
dc.identifier.epage	4465	en