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Two-step micro cellular foaming of amorphous polymers in supercritical CO2

dc.rights.licenseopen
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorREGLERO RUIZ, José Antonio
hal.structure.identifierIUT, Dept Sci & Genie Mat [Univ Bordeaux]
dc.contributor.authorTALLON, Jean-Marc
hal.structure.identifierIUT, Dept Sci & Genie Mat [Univ Bordeaux]
dc.contributor.authorPEDROS, Matthieu
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.issued2011
dc.identifier.issn0896-8446
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/20343
dc.description.abstractEnMicrocellular foaming of amorphous rigid polymers, polymethylmethacrylate (PMMA) and polystyrene (PS) was studied in supercritical CO2 (ScCO2) in the presence of several types of additives, such as triblock ( styrene-co-butadiene-co-methylmethactylate, SBM and methylmethacrylate-co-butylacrylate-co-methylmethacrylate, MAM) terpolymers. This work is focused in the two-step foaming process, in which the sample is previously saturated under ScCO2 being expanded in a second step out of the CO2 vessel (e.g. in a hot oil bath) where foaming is initiated by the change of temperature near or above the glass transition temperature of the glass/polymer glassy system. Samples were saturated under high pressures of CO2 (300 bar), at room temperature, for 16 h, followed by a quenching at a high depressurization rate (150 bar/min). In the last step, foaming was carried out at different temperatures (from 80 degrees C to 140 degrees C) and different foaming times (from 10 s to 120s). It was found that cellular structures were controlled selecting either the additive type or the foaming conditions. Cell sizes are ranging from 0.3 mu m to 300 mu m, and densities from 0.50 g/cm(3) to 1 g/cm(3) depending on the polymers considered.
dc.language.isoen
dc.publisherElsevier
dc.subject.enNanostructured
dc.subject.enSupercritical carbon dioxide
dc.subject.enMicrocellular foaming
dc.subject.enAmorphous polymers
dc.subject.enAdditives
dc.title.enTwo-step micro cellular foaming of amorphous polymers in supercritical CO2
dc.typeArticle de revue
dc.identifier.doi10.1016/j.supflu.2011.01.011
dc.subject.halChimie/Polymères
bordeaux.journalJournal of Supercritical Fluids
bordeaux.page87-94
bordeaux.volume57
bordeaux.hal.laboratoriesLaboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629*
bordeaux.issue1
bordeaux.institutionBordeaux INP
bordeaux.institutionUniversité de Bordeaux
bordeaux.peerReviewedoui
hal.identifierhal-00956648
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00956648v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Supercritical%20Fluids&rft.date=2011&rft.volume=57&rft.issue=1&rft.spage=87-94&rft.epage=87-94&rft.eissn=0896-8446&rft.issn=0896-8446&rft.au=REGLERO%20RUIZ,%20Jos%C3%A9%20Antonio&TALLON,%20Jean-Marc&PEDROS,%20Matthieu&DUMON,%20Michel&rft.genre=article


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