Two-step micro cellular foaming of amorphous polymers in supercritical CO2
JAR Ruiz, J Marc-Tallon, M Pedros… - The Journal of Supercritical …, 2011 - Elsevier
Microcellular foaming of amorphous rigid polymers, polymethylmethacrylate (PMMA) and
polystyrene (PS) was studied in supercritical CO2 (ScCO2) in the presence of several types
of additives, such as triblock (styrene-co-butadiene-co-methylmethacrylate, SBM and
methylmethacrylate-co-butylacrylate-co-methylmethacrylate, MAM) terpolymers. This work is
focused in the two-step foaming process, in which the sample is previously saturated under
ScCO2 being expanded in a second step out of the CO2 vessel (eg in a hot oil bath) where …
polystyrene (PS) was studied in supercritical CO2 (ScCO2) in the presence of several types
of additives, such as triblock (styrene-co-butadiene-co-methylmethacrylate, SBM and
methylmethacrylate-co-butylacrylate-co-methylmethacrylate, MAM) terpolymers. This work is
focused in the two-step foaming process, in which the sample is previously saturated under
ScCO2 being expanded in a second step out of the CO2 vessel (eg in a hot oil bath) where …
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