CO2-treated polyol was also subjected to Gel Permeation Chromatography (GPC) and Fourier Transform Infrared (FT-IR) spectroscopic analysis to evaluate the effect of the high-CO2 pressure treatment. The results show quite a large CO2 solubilization (up to 17% ca. in the examined experimental range), in. urn responsible for a moderate swelling of the polymer and an extensive effect on the interfacial tension, which reaches vanishing values at the highest investigated pressure. (C) 2016 Elsevier B.V. All rights reserved.
In this work we investigate the sorption of CO2 in a formulated polyether polyol, typically used to obtain rigid polyurethane foams when it reacts with isocyanates. In particular, by using a fully-experimental, coupled gravimetry-Axisymmetric Drop Shape Analysis, solubility, mutual diffusivity, specific volume and interfacial tension of polyol/CO2 solutions have been measured at 35 degrees C and at CO2 pressures up to 8000 kPa.
Polyether polyol/CO2 solutions: Solubility, mutual diffusivity, specific volume and interfacial tension by coupled gravimetry-Axisymmetric Drop Shape Analysis
Dal Poggetto Giovanni;
2016
Abstract
In this work we investigate the sorption of CO2 in a formulated polyether polyol, typically used to obtain rigid polyurethane foams when it reacts with isocyanates. In particular, by using a fully-experimental, coupled gravimetry-Axisymmetric Drop Shape Analysis, solubility, mutual diffusivity, specific volume and interfacial tension of polyol/CO2 solutions have been measured at 35 degrees C and at CO2 pressures up to 8000 kPa.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
