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Microcellular Foaming of Polymethylmethacrylate in a Batch Supercritical CO2 Process: Effect of Microstructure on Compression Behavior

dc.rights.licenseopen
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorREGLERO RUIZ, Jose Antonio
hal.structure.identifierInstitut de Mécanique et d'Ingénierie de Bordeaux [I2M]
dc.contributor.authorVIOT, Philippe
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorDUMON, Michel
dc.date.accessioned2020
dc.date.available2020
dc.date.issued2010
dc.identifier.issn0021-8995
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/20313
dc.description.abstractEnMicrocellular foaming of reinforced core/ shell Polymethylmethacrylate (PMMA) was carried out bymeans of supercritical CO2 in a single-step process. Samples were produced using a technique based on the saturation of the polymer under high pressure of CO2(300 bars,40 C), and cellular structure was controlled by varying the depressurization rate from 0.5 bar/s to 1.6 x10-2 bar/sleading to cell sizes from 1lm to 200l m, and densities from 0.8 to 1.0 g/cm3. 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 µm). 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 CO2 Process: Effect of Microstructure on Compression Behavior
dc.typeArticle de revue
dc.subject.halChimie/Matériaux
dc.subject.halSciences de l'ingénieur [physics]/Matériaux
dc.subject.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Mécanique des matériaux [physics.class-ph]
dc.subject.halPhysique [physics]/Mécanique [physics]/Mécanique des matériaux [physics.class-ph]
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-01006872
hal.version1
dc.subject.itmicrocellular foam
dc.subject.itPMMA
dc.subject.itsupercritical CO2
dc.subject.itcompression properties
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01006872v1
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