Publication: Microcellular natural rubber using supercritical CO<inf>2</inf> technology
Issued Date
2019-07-01
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ISSN
08968446
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2-s2.0-85063881557
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Mahidol University
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SCOPUS
Bibliographic Citation
Journal of Supercritical Fluids. Vol.149, (2019), 70-78
Suggested Citation
W. Tessanan, P. Phinyocheep, P. Daniel, A. Gibaud Microcellular natural rubber using supercritical CO<inf>2</inf> technology. Journal of Supercritical Fluids. Vol.149, (2019), 70-78. doi:10.1016/j.supflu.2019.03.022 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/50507
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Title
Microcellular natural rubber using supercritical CO<inf>2</inf> technology
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Abstract
© 2019 Microcellular natural rubber (NR) prepared using a supercritical CO2 technology is a promising alternative to replace traditional foaming agent due to environmental concern. Crucial parameters for the foaming process including CO2 saturation time (30, 60, 90, 120, 180) min, pressure (0, 8.5, 10.5, 12.5) MPa, temperature (45, 55, 65, 85) °C, and crosslinking characteristics of NR (pre-vulcanized time at 15 min and 30 min) were orderly conducted. The results obtained showed a decrement of average cell size (less than 10 μm), cell size distribution, and expansion ratio depending on an enhancement of saturation time and pressure. However, the increment of saturation temperature affected the increase in average cell size, cell size distribution, and expansion ratio. In case of the crosslinking behavior, an escalation of the pre-vulcanized time of rubber influenced the decrement in average cell size, cell size distribution and expansion ratio resulting from an elevation of matrix crosslinking.