A single segment differential tube model with interchain tube pressure effect

Dhole, S; Leygue, A; Bailly, C; Keunings, R

dc.contributor.author	Dhole, S	en
dc.contributor.author	Leygue, A	en
dc.contributor.author	Bailly, C	en
dc.contributor.author	Keunings, R	en
dc.date.accessioned	2014-03-01T01:29:38Z
dc.date.available	2014-03-01T01:29:38Z
dc.date.issued	2009	en
dc.identifier.issn	0377-0257	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19333
dc.subject	Convective constraint release	en
dc.subject	Finite extensibility	en
dc.subject	Interchain tube pressure effect	en
dc.subject	Tube model	en
dc.subject.classification	Mechanics	en
dc.subject.other	Convective constraint release	en
dc.subject.other	Entangled polymers	en
dc.subject.other	Entangled system	en
dc.subject.other	Experimental errors	en
dc.subject.other	Extensional flows	en
dc.subject.other	Finite extensibility	en
dc.subject.other	Interchain tube pressure effect	en
dc.subject.other	Linear polymers	en
dc.subject.other	Monodisperse	en
dc.subject.other	Nonlinear behaviours	en
dc.subject.other	Quantitative prediction	en
dc.subject.other	Relative importance	en
dc.subject.other	Relaxation mechanism	en
dc.subject.other	Reptation	en
dc.subject.other	Single segments	en
dc.subject.other	Tube dimension	en
dc.subject.other	Tube length	en
dc.subject.other	Tube model	en
dc.subject.other	Supramolecular chemistry	en
dc.subject.other	Tubes (components)	en
dc.subject.other	Pressure effects	en
dc.title	A single segment differential tube model with interchain tube pressure effect	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.jnnfm.2009.03.014	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.jnnfm.2009.03.014	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	We develop a single segment differential tube model including interchain tube pressure effect (ITPE) [G. Marrucci, G. Ianniruberto, Interchain pressure effect in extensional flows of entangled polymers, Macromolecules 36 (2004) 3934-3942], able to describe the non-linear behaviour of entangled linear polymers. The model accounts for the effect of flow on the tube length and diameter. It is presented in two versions, depending on which tube dimension is assumed to deform affinely. The classical relaxation mechanisms, i.e., reptation, stretch dynamics, convective constraint release (CCR), as well as finite extensibility, are incorporated in a simple manner; hence the model allows an explicit comparison of the relative importance of various effects. A striking result is the insignificance of finite extensibility and the detrimental influence of CCR for moderately entangled systems when ITPE is taken into account. For highly entangled systems, CCR regains importance to avoid the well-known shear stress instability. The proposed model is able to make quantitative predictions of steady elongational and shear data for monodisperse melts, while transient values are less accurate but within experimental errors. (C) 2009 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Journal of Non-Newtonian Fluid Mechanics	en
dc.identifier.doi	10.1016/j.jnnfm.2009.03.014	en
dc.identifier.isi	ISI:000268939600002	en
dc.identifier.volume	161	en
dc.identifier.issue	1-3	en
dc.identifier.spage	10	en
dc.identifier.epage	18	en