Vitrification Conditions and Porosity of CO2 Blown Polystyrene Foams.

0455929 - ÚCHP 2016 FR eng C - Conference Paper (international conference)
Sovová, Helena - Nistor, A. - Kosek, J.
Vitrification Conditions and Porosity of CO2 Blown Polystyrene Foams.
978-2-910239-82-4. In: Abstracts Book. -: -, 2015 - (Antoch, J.), s. 1365. ISBN 978-2-910239-82-4.
[European Congress of Chemical Engineering 2015 - ECCE /10./. Nice (FR), 27.09.2015-01.10.2015]
R&D Projects: GA ČR(CZ) GA14-18938S
Institutional support: RVO:67985858
Keywords : CO2 enthalpy * CO2 solubility in polystyrene * high pressure
Subject RIV: CI - Industrial Chemistry, Chemical Engineering
http://www.ecce2015.eu/program/synopsis-program

Polymer foaming with CO2 is a promising area of research with applications already commercialized and more on the horizon. In batch experiments, polymer film absorbes supercritical CO2 at the temperature adjusted above the glass transition temperature of the polymer, Tg, until saturation is reached. Rapid depressurization is then applied, causing gas supersaturation and allowing
cell formation. The polymer foaming is an interdisciplinary field reaching to polymer rheology, mass transport, thermodynamics, and nucleation, and computational approaches enable insight into foaming phenomena, while experimental techniques are coming that can provide reliable data. Most of theoretical effort is foccused on phenomena of cell nucleation and cell growth.1-3.
Permanent Link: http://hdl.handle.net/11104/0256526