Amorphous Polymers’ Foaming and Blends with Organic Foaming-Aid Structured Additives in Supercritical CO2, a Way to Fabricate Porous Polymers from Macro to Nano Porosities in Batch or Continuous Processes
| dc.rights.license | open | en_US |
| hal.structure.identifier | Laboratoire de Chimie des Polymères Organiques [LCPO] | |
| hal.structure.identifier | Team 1 LCPO : Polymerization Catalyses & Engineering | |
| dc.contributor.author | HAURAT, Margaux | |
| hal.structure.identifier | Laboratoire de Chimie des Polymères Organiques [LCPO] | |
| hal.structure.identifier | Team 1 LCPO : Polymerization Catalyses & Engineering | |
| dc.contributor.author | DUMON, Michel | |
| dc.date.accessioned | 2021-07-06T07:53:32Z | |
| dc.date.available | 2021-07-06T07:53:32Z | |
| dc.date.issued | 2020-11-14 | |
| dc.identifier.issn | 1420-3049 | en_US |
| dc.identifier.uri | oai:crossref.org:10.3390/molecules25225320 | |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/94982 | |
| dc.description.abstractEn | Organic polymers can be made porous via continuous or discontinuous expansion processes in scCO2. The resulting foams properties are controlled by the interplay of three groups of parameters: (i) Chemical, (ii) physico-chemical, and (iii) technological/process that are explained in this paper. The advantages and drawbacks of continuous (extrusion, injection foaming) or discontinuous (batch foaming) foaming processes in scCO2, will be discussed in this article; especially for micro or nano cellular polymers. Indeed, a challenge is to reduce both specific mass (e.g., ρ < 100 kg·m−3) and cell size (e.g., average pore diameter ϕaveragepores < 100 nm). Then a particular system where small “objects” (coreshells CS, block copolymer MAM) are perfectly dispersed at a micrometric to nanometric scale in poly(methyl methacrylate) (PMMA) will be presented. Such “additives”, considered as foaming aids, are aimed at “regulating” the foaming and lowering the pore size and/or density of PMMA based foams. Differences between these additives will be shown. Finally, in a PMMA/20 wt% MAM blend, via a quasi one-step batch foaming, a “porous to nonporous” transition is observed in thick samples. A lower limit of pore size (around 50 nm) seems to arise. | |
| dc.language.iso | EN | en_US |
| dc.rights | Attribution-NonCommercial-ShareAlike 3.0 United States | * |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/3.0/us/ | * |
| dc.source | crossref | |
| dc.title.en | Amorphous Polymers’ Foaming and Blends with Organic Foaming-Aid Structured Additives in Supercritical CO2, a Way to Fabricate Porous Polymers from Macro to Nano Porosities in Batch or Continuous Processes | |
| dc.type | Article de revue | en_US |
| dc.identifier.doi | 10.3390/molecules25225320 | en_US |
| dc.subject.hal | Chimie/Polymères | en_US |
| bordeaux.journal | Molecules | en_US |
| bordeaux.page | 5320 | en_US |
| bordeaux.volume | 25 | en_US |
| bordeaux.hal.laboratories | Laboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629 | en_US |
| bordeaux.issue | 22 | en_US |
| bordeaux.institution | Université de Bordeaux | en_US |
| bordeaux.institution | Bordeaux INP | en_US |
| bordeaux.institution | CNRS | en_US |
| bordeaux.peerReviewed | oui | en_US |
| bordeaux.inpress | non | en_US |
| bordeaux.import.source | dissemin | |
| hal.identifier | hal-03278919 | |
| hal.version | 1 | |
| hal.date.transferred | 2021-07-06T07:53:36Z | |
| hal.export | true | |
| workflow.import.source | dissemin | |
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