Polyether Polyol/CO2 Solutions: Solubility, Mutual Diffusivity, Specific
Fluid Phase Equilibria 425 (2016) 342e350 Contents lists available at ScienceDirect Fluid Phase Equilibria journal homepage: www.elsevier.com/locate/fluid Polyether polyol/CO2 solutions: Solubility, mutual diffusivity, specific volume and interfacial tension by coupled gravimetry-Axisymmetric Drop Shape Analysis Maria Rosaria Di Caprio a, Giovanni Dal Poggetto b, Maria Giovanna Pastore Carbone a, c, * Ernesto Di Maio a, , Sara Cavalca d, Vanni Parenti d, Salvatore Iannace e a Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy b Institute for Polymers, Composites and Biomaterials, National Research Council, Via Campi Flegrei 34, 80078 Pozzuoli, Naples, Italy c Institute of Chemical Engineering Sciences, Foundation of Research and Technology-Hellas (FORTH/ICE-HT), Stadiou Street, Platani, Patras Achaias 26504, Greece d Dow Italia s.r.l, Polyurethanes R&D, Via Carpi 29, 42015 Correggio, Italy e Institute for Macromolecular Studies, National Research Council, Via Edoardo Bassini, 15, 20133 Milan, Italy article info abstract Article history: In this work we investigate the sorption of CO2 in a formulated polyether polyol, typically used to obtain Received 29 March 2016 rigid polyurethane foams when it reacts with isocyanates. In particular, by using a fully-experimental, Received in revised form coupled gravimetry-Axisymmetric Drop Shape Analysis, solubility, mutual diffusivity, specific volume 8 June 2016 and interfacial tension of polyol/CO solutions have been measured at 35 C and at CO pressures up to Accepted 9 June 2016 2 2 8000 kPa. Available online 14 June 2016 CO2-treated polyol was also subjected to Gel Permeation Chromatography (GPC) and Fourier Trans- form Infrared (FT-IR) spectroscopic analysis to evaluate the effect of the high-CO pressure treatment.
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