Effect of LDPE on the thermomechanical properties of LLDPE-based films

Niaounakis, M; Kontou, E

dc.contributor.author	Niaounakis, M	en
dc.contributor.author	Kontou, E	en
dc.date.accessioned	2014-03-01T01:22:15Z
dc.date.available	2014-03-01T01:22:15Z
dc.date.issued	2005	en
dc.identifier.issn	0887-6266	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16501
dc.subject.classification	Polymer Science	en
dc.subject.other	Catalysts	en
dc.subject.other	Differential scanning calorimetry	en
dc.subject.other	Dynamic mechanical analysis	en
dc.subject.other	Mechanical properties	en
dc.subject.other	Melting	en
dc.subject.other	Monomers	en
dc.subject.other	Plastic films	en
dc.subject.other	Thermodynamic properties	en
dc.subject.other	Crystallinity	en
dc.subject.other	Melting temperature	en
dc.subject.other	Metalllocene catalysts	en
dc.subject.other	Thermomechanical properties	en
dc.subject.other	Linear low density polyethylenes	en
dc.title	Effect of LDPE on the thermomechanical properties of LLDPE-based films	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/polb.20473	en
heal.identifier.secondary	http://dx.doi.org/10.1002/polb.20473	en
heal.language	English	en
heal.publicationDate	2005	en
heal.abstract	The present study compares the properties of five films: one film of low-density polyethylene (LDPE), two films of linear low density polyethylenes (1-octene comonomer) - one made by metalllocene catalyst (mLLDPE) and the other by Ziegler-Natta (zLLDPE) - and two blend films, one of mLLDPE/LDPE (film A) and the other of zLLDPE/LDPE (film B). The effect of LDPE (22% by weight) on the thermomechanical properties of LLDPE-based films is investigated by using differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), and stress-strain in the yield region measurements. The mechanical, dynamic, and thermal properties of film A are quite similar to a single component system (mLLDPE). The addition of this amount of LDPE does not affect the melting temperature of mLLDPE but it enhances its crystallinity. Film B is a rather inhomogeneous material, as opposed to film A, and its properties seem to be dependent on stretching conditions. Further-more, the thermally activated rate process (Eyring's theory) is applied to analyze the yielding behavior of the two blend films. Double yielding manifested by film B is described with two thermally activated processes, while film A is satisfactorily described by a single process. © 2005 Wiley Periodicals, Inc.	en
heal.publisher	JOHN WILEY & SONS INC	en
heal.journalName	Journal of Polymer Science, Part B: Polymer Physics	en
dc.identifier.doi	10.1002/polb.20473	en
dc.identifier.isi	ISI:000230023200015	en
dc.identifier.volume	43	en
dc.identifier.issue	13	en
dc.identifier.spage	1712	en
dc.identifier.epage	1727	en