Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/45396
Campo DC Valoridioma
dc.contributor.authorAid, Saraen_US
dc.contributor.authorEddhahak, Anissaen_US
dc.contributor.authorOrtega, Zaidaen_US
dc.contributor.authorFroelich, Danielen_US
dc.contributor.authorTcharkhtchi, Abbasen_US
dc.date.accessioned2018-11-22T09:30:54Z-
dc.date.available2018-11-22T09:30:54Z-
dc.date.issued2017en_US
dc.identifier.isbn9781927877326en_US
dc.identifier.urihttp://hdl.handle.net/10553/45396-
dc.description.abstractThe present work focuses on the study of coalescence phenomenon of two different polymers the PolyVinyliDene Fluoride (PVDF), and Poly (methyl methacrylate) PMMA. Different blends of PVDF/PMMA polymers (0%, 10%, 30%, 70%, 90% and 100%) have been compounded using single-screw extrusion process. Then the blends have been characterized by physico-chemical, thermal and thermomechanical methods; their rheological characteristics have been studied at molten state. These tests showed clearly the miscibility of PMMA and PVDF [1]. The coalescence tests have been performed on the grains of the initial polymers using a polarized light optical microscope combined by a hot stage, video camera and video capture software. The curves of coalescence were plotted using an image software analyzer. Different tests were carried out on different pairs of PVDF/PVDF, PMMA/PMMA and PVDF/PMMA. The effect of different parameters like temperature, particle size on the rate of coalescence was investigated. In order to follow the effect of the neighboring grains on the kinetic of coalescence of two grains a third grain has been put in contact with these two grains in different positions. The results show that the coalescence phenomenon is very sensitive to the temperature and depends mostly on it. The second part of this study concerns the modeling of coalescence of the grains of different polymers. In previous works, our researcher group used the Bellehumeur’s model [2] for modelling the coalescence rate of two particles of the same polymer (PP, PVDF and PMMA) [3]. They studied the effect of viscosity, surface tension and relaxation time of the polymer on coalescence phenomenon. The novelty studied in this work is the modeling of the coalescence of two different polymers which exhibit different rheological and physicochemical properties. The aim is to modify the Bellehumeur model to the case of two different polymers. Thus, it is necessary to investigate the effect of viscosity, surface tension and relaxation of each polymer grain on kinetic model. The use of such approaches allowed us to transpose the Bellehumeur’s model to the case of two different grains by including corrector factors. In fact, when the polymers grains merge, an interphase is formed between them. The results indicate that the modified Bellehumeur model proposed presents a good correspondence with the experimental results obtained by microscopy. Finally, to support and deepen this study, we carried out simulation of this phenomenon using in one hand Fluent software and in the other hand a meshless methods for numerical simulation in mechanics which is called SPH (Smoothed Particle Hydrodynamics) [4].en_US
dc.languageengen_US
dc.relation.ispartofProceedings of the World Congress on Mechanical, Chemical, and Material Engineeringen_US
dc.sourceProceedings of the World Congress on Mechanical, Chemical, and Material Engineeringen_US
dc.subject3313 Tecnología e ingeniería mecánicasen_US
dc.titleModelling and simulation of the coalescence of two different polymer grainsen_US
dc.typeinfo:eu-repo/semantics/conferenceObjectes
dc.typeConferenceObjectes
dc.identifier.doi10.11159/iccpe17.111en_US
dc.identifier.scopus85044997087-
dc.contributor.authorscopusid57193411817-
dc.contributor.authorscopusid14029860400-
dc.contributor.authorscopusid36241994700-
dc.contributor.authorscopusid57194780308-
dc.contributor.authorscopusid57203840574-
dc.investigacionIngeniería y Arquitecturaen_US
dc.type2Actas de congresosen_US
dc.identifier.ulpgces
item.grantfulltextnone-
item.fulltextSin texto completo-
crisitem.author.deptGIR Fabricación integrada y avanzada-
crisitem.author.deptDepartamento de Ingeniería de Procesos-
crisitem.author.orcid0000-0002-7112-1067-
crisitem.author.parentorgDepartamento de Ingeniería Mecánica-
crisitem.author.fullNameOrtega Medina, Zaida Cristina-
Colección:Actas de congresos
Vista resumida

Google ScholarTM

Verifica

Altmetric


Comparte



Exporta metadatos



Los elementos en ULPGC accedaCRIS están protegidos por derechos de autor con todos los derechos reservados, a menos que se indique lo contrario.