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hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorREGLERO RUIZ, José Antonio
hal.structure.identifierLaboratoire Matériaux Endommagement Fiabilité et Ingénierie des Procédés [LAMEFIP]
dc.contributor.authorVIOT, Philippe
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 1 LCPO : Polymerization Catalyses & Engineering
dc.contributor.authorDUMON, Michel
dc.date.accessioned2020
dc.date.available2020
dc.date.created2010
dc.date.issued2010
dc.identifier.issn0021-8995
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/20536
dc.description.abstractEnMicrocellular foaming of reinforced core/shell Polymethylmethacrylate (PMMA) was carried out by means of supercritical CO(2) in a single-step process. Samples were produced using a technique based on the saturation of the polymer under high pressure of CO(2) (300 bars, 40 degrees C), and cellular structure was controlled by varying the depressurization rate from 0.5 bar/s to 1.6 x 10(-2) bar/s leading to cell sizes from 1 vim to 200 mu m, and densities from 0.8 to 1.0 g/cm(3). It was found that the key parameter to control cell size was depressurization rate, and larger depressurization rates generated bigger cell sizes. On the other hand, variation of the density of the samples was not so considerable. Low rate compression tests were carried out, analyzing the dependence of mechanical parameters such as elastic modulus, yield stress and densification strain with cell size. Moreover, the calculation of the energy absorbed for each sample is presented, showing an optimum of energy absorption up to 50% of deformation in the micrometer cellular range (here at a cell size of about 5 pm). To conclude, a brief comparison between neat PMMA and the core/shell reinforced PMMA has been carried out, analyzing the effect of the core/shell particles in the foaming behavior and mechanical properties.
dc.language.isoen
dc.publisherWiley
dc.title.enMicrocellular Foaming of Polymethylmethacrylate in a Batch Supercritical CO(2) Process: Effect of Microstructure on Compression Behavior
dc.typeArticle de revue
dc.identifier.doi10.1002/app.32351
dc.subject.halChimie/Polymères
bordeaux.journalJournal of Applied Polymer Science
bordeaux.page320-331
bordeaux.volume118
bordeaux.hal.laboratoriesLaboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629*
bordeaux.issue1
bordeaux.institutionBordeaux INP
bordeaux.institutionUniversité de Bordeaux
bordeaux.peerReviewedoui
hal.identifierhal-00679032
hal.version1
dc.subject.itcompression properties
dc.subject.itmicrocellular foam
dc.subject.itPMMA
dc.subject.itsupercritical CO2
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00679032v1
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