2026-04-20T05:49:46Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/49282021-11-10T09:38:26Zcom_10259_4313com_10259_5086com_10259_2604col_10259_4314

Reglero Ruiz, José A. 468 500 Vallejos Calzada, Saúl 567 500 Sanjuán Cortázar, Ana María 521 500 García García, Félix Clemente 201 500 Múgica, Mikel . d0e89ca6-954f-4344-96e5-a0a85d5cec80 500 Rodríguez Pérez, Miguel Ángel . 31bc4b58-ea6d-40b4-8698-9678699c3213 500 García Pérez, José Miguel 213 500 2018-09-10T07:49:51Z 2019-03-01T03:45:06Z 2018-02 0021-8995 http://hdl.handle.net/10259/4928 doi.org/10.1002/app.45872 Microcellular polymers have been produced by ScCO2 foaming, based on 1-vinyl-2-pyrrolidone (VP) and butyl-acrylate (BA). Three different copolymers were prepared, varying the compositions of VP and BA, following a simple radical polymerization process using an UV initiator. The samples a good foaming behavior and also excellent flexibility and handle ability, with expansion ratios between 1.53 and 1.72, and cell sizes in the microcellular range (below 5 mm). However, it was observed that the gas distribution and, consequently, the cellular structure inside the polymer foams was highly dependent on the VP and BA proportions, leading to very different thermal conductivity values, even for similar volume gas fraction values. These results were related to the copolymer nanostructuration, which seems to have an influence in the final pore structure, thus opening the possibility of designing microcellular foams with similar macroscopic characteristics but different thermal conductivity values FEDER and both the Spanish Ministerio de Economıa y Competitividad (MAT2014–54137-R) and the Consejerıa de Educacion-Junta de Castilla y Leon (BU061U16) application/pdf eng Wiley Journal of Applied Polymer Science. 2018, V. 135, n. 7, art. 45872 https://doi.org/10.1002/app.45872 info:eu-repo/grantAgreement/MINECO/MAT2014–54137-R info:eu-repo/grantAgreement/JCyL/BU061U16 foams porous materials radical polymerization thermal properties Química orgánica Chemistry, Organic Microcellular polymeric foams based on 1‐vinyl‐2‐pyrrolidone and butyl‐acrylate with tuned thermal conductivity info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion info:eu-repo/semantics/openAccess THUMBNAIL Reglero-japs_2018.pdf.jpg Reglero-japs_2018.pdf.jpg IM Thumbnail image/jpeg 4879 https://riubu.ubu.es/bitstream/10259/4928/4/Reglero-japs_2018.pdf.jpg ebd3d8766051ed1404f04a2cb59f8d1c MD5 4 ORIGINAL Reglero-japs_2018.pdf Reglero-japs_2018.pdf application/pdf 818643 https://riubu.ubu.es/bitstream/10259/4928/1/Reglero-japs_2018.pdf fa3b6ba465f51b296d364896216c726c MD5 1 LICENSE license.txt license.txt text/plain; charset=utf-8 998 https://riubu.ubu.es/bitstream/10259/4928/2/license.txt aa90105e1c90a1b4fe810649aa967b7d MD5 2 TEXT Reglero-japs_2018.pdf.txt Reglero-japs_2018.pdf.txt Extracted text text/plain 35432 https://riubu.ubu.es/bitstream/10259/4928/3/Reglero-japs_2018.pdf.txt 37fa786399dc303bd9ff9665a7948f52 MD5 3 10259/4928 oai:riubu.ubu.es:10259/4928 2021-11-10 10:38:26.384 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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