RT info:eu-repo/semantics/article T1 Microcellular polymeric foams based on 1‐vinyl‐2‐pyrrolidone and butyl‐acrylate with tuned thermal conductivity A1 Reglero Ruiz, José Antonio A1 Vallejos Calzada, Saúl A1 Sanjuán Cortázar, Ana María A1 García García, Félix Clemente A1 Múgica, Mikel . A1 Rodríguez Pérez, Miguel Ángel . A1 García Pérez, José Miguel K1 foams K1 porous materials K1 radical polymerization K1 thermal properties K1 Química orgánica K1 Chemistry, Organic AB 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 polymerizationprocess using an UV initiator. The samples a good foaming behavior and also excellent flexibility and handle ability, with expansionratios between 1.53 and 1.72, and cell sizes in the microcellular range (below 5 mm). However, it was observed that the gas distributionand, consequently, the cellular structure inside the polymer foams was highly dependent on the VP and BA proportions, leadingto very different thermal conductivity values, even for similar volume gas fraction values. These results were related to the copolymernanostructuration, which seems to have an influence in the final pore structure, thus opening the possibility of designing microcellularfoams with similar macroscopic characteristics but different thermal conductivity values PB Wiley SN 0021-8995 YR 2018 FD 2018-02 LK http://hdl.handle.net/10259/4928 UL http://hdl.handle.net/10259/4928 LA eng NO FEDER and both the SpanishMinisterio de Economıa y Competitividad (MAT2014–54137-R)and the Consejerıa de Educacion-Junta de Castilla y Leon(BU061U16) DS Repositorio Institucional de la Universidad de Burgos RD 29-mar-2024