2026-04-29T01:22:28Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/51932021-11-30T23:42:06Zcom_10259_4244com_10259_5086com_10259_2604com_10259_4313col_10259_4245col_10259_4314

Trigo López, Miriam 556 500 0000-0001-5948-1230 Vallejos Calzada, Saúl 567 500 Reglero Ruiz, José A. 468 500 Ramos Rodríguez, Cipriano 464 500 Beltrán Calvo, Sagrario 57 500 García García, Félix Clemente 201 500 García Pérez, José Miguel 213 500 2019-12-03T11:58:08Z 2019-12-03T11:58:08Z 2019-11 0032-3861 http://hdl.handle.net/10259/5193 10.1016/j.polymer.2019.121867 The use of supercritical CO2 (ScCO2) has been established as a standard technique to produce micro- and nanocellular polymers with controlled morphologies and cell sizes between 500 nm and several microns. However, overcoming the gap between micro and nanocellular polymers implies the use of long saturation times (up to several days) and low temperatures (below 0 °C) combined with high saturation pressures (above 30 MPa). This work presents a different approach to obtain microporous poly (methyl methacrylate) (PMMA) structures with controlled morphologies using a physical procedure employing ionic liquids that are mixed in solution with PMMA. The ionic liquid can produce interesting fine microporous materials simply by being removed with distilled water. The work compares the two fabrication methods previously mentioned to critically analyze the benefits and drawbacks of each preparation route. The method in this paper opens the possibility to obtain microporous polymers by employing ionic liquids, thus reducing the time of processing, avoiding specific foaming equipment and broadening the applicability of crosslinked and semi crystalline polymers. Low velocity tensile test results are also presented to point out the improvement in the mechanical parameters of microporous films obtained from ionic liquids compared to those of films foamed using ScCO2. application/pdf eng Elsevier Polymer. 2019, V. 183, n. 21, 121867 https://doi.org/10.1016/j.polymer.2019.121867 http://creativecommons.org/licenses/by-nc-nd/4.0/ Attribution-NonCommercial-NoDerivatives 4.0 Internacional info:eu-repo/semantics/openAccess Ionic liquid ScCO2 Microporous film PMMA Química orgánica Chemistry, Organic Fabrication of microporous PMMA using ionic liquids: An improved route to classical ScCO2 foaming process info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion TEXT Trigo-polymer_2019.pdf.txt Trigo-polymer_2019.pdf.txt Extracted text text/plain 59090 https://riubu.ubu.es/bitstream/10259/5193/5/Trigo-polymer_2019.pdf.txt a07063c6e224fa7afc6054609518e44d MD5 5 THUMBNAIL Trigo-polymer_2019.pdf.jpg Trigo-polymer_2019.pdf.jpg IM Thumbnail image/jpeg 4580 https://riubu.ubu.es/bitstream/10259/5193/4/Trigo-polymer_2019.pdf.jpg ca68ba0ca920c81a6ac319cedd32fa04 MD5 4 LICENSE license.txt license.txt text/plain; charset=utf-8 998 https://riubu.ubu.es/bitstream/10259/5193/3/license.txt aa90105e1c90a1b4fe810649aa967b7d MD5 3 CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 805 https://riubu.ubu.es/bitstream/10259/5193/2/license_rdf 4460e5956bc1d1639be9ae6146a50347 MD5 2 ORIGINAL Trigo-polymer_2019.pdf Trigo-polymer_2019.pdf application/pdf 2523407 https://riubu.ubu.es/bitstream/10259/5193/1/Trigo-polymer_2019.pdf 27c9212ca7fb509089f4292d410f4928 MD5 1 10259/5193 oai:riubu.ubu.es:10259/5193 2021-12-01 00:42:06.345 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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