Browsing by Author "Centeno-Pedrazo, Ander"
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Item The future of isosorbide as a fundamental constituent for polycarbonates and polyurethanes(2021) Gómez-de-Miranda-Jiménez-de-Aberasturi, Olga; Centeno-Pedrazo, Ander; Prieto Fernández, Soraya; Rodriguez Alonso, Raquel; Medel, Sandra; María Cuevas, Jose; Monsegue, Luciano G.; De Wildeman, Stefaan; Benedetti, Elena; Klein, Daniela; Henneken, Hartmut; Ochoa-Gómez, José R.; Tecnalia Research & Innovation; BIOECONOMÍA Y CO2; GENERAL; POLIMEROSIsosorbide is a biobased compound which could become in the near future an advantageous competitor of petroleum-derived components in the synthesis of polymers of different nature. When the reactivity of isosorbide is not enough, it can be successfully transformed into secondary building blocks, such as isosorbide bis(methyl carbonate), which provides extra functionalities for polymerization reactions with diols or diamines. The present review summarizes the possibilities for isosorbide as a green raw material to be used in the synthesis of polycarbonates and polyurethanes to obtain products of similar or enhanced properties to the commercial equivalents.Item Sustainable lignin-based polyols as promising thermal energy storage materials(2021-12-10) Perez-Arce, Jonatan; Serrano, Angel; Dauvergne, Jean Luc; Centeno-Pedrazo, Ander; Prieto-Fernandez, Soraya; Palomo Del Barrio, Elena; Garcia-Suarez, Eduardo J.; Perez‐Arce, Jonatan; Centeno‐Pedrazo, Ander; Prieto‐Fernandez, Soraya; Garcia‐Suarez, Eduardo J.; Tecnalia Research & Innovation; GENERALSix lignin-based polyols (LBPs) have been prepared by cationic ring opening polymerization of an oxirane in the presence of an organosolv lignin in tetrahydrofuran (THF) as reaction media and co-monomer. The prepared LBPs have been characterized and tested for the first time as phase change materials (PCMs) for thermal energy storage (TES) at low temperature. It was found a strong influence of the LBPs composition on their performance to storage thermal energy. Thus, LBPs with higher THF wt% content and lower oxirane/THF mass ratio exhibit the highest latent heats. Furthermore, a clear inversely proportional trend between the oxirane/THF mass ratio and the melting temperatures of the prepared LBPs was noticed. Among the prepared LBPs, the highest obtained latent heat was 53.7 J/g demonstrating the potential application of lignin as feedstock for PCMs preparation. To the best of our knowledge, this is the first time that a biomass derived PCM based on lignin has been studied and considered for TES applications at low temperature. LBPs show energetic solid–liquid transitions that point out their promising potential as bio-PCMs. This work paves the way to introduce new bio-based PCMs from lignin in TES systems, for example, in a more sustainable construction sector.