Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 3, Issue 4, Pages 743-749Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.5b00049
Keywords
Polyurethane foam; bio-based polyol; epoxidized soybean oil; Hansen solubility parameters; thermal conductivity
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The Hansen solubility parameters of a soy-castor oilbased polyol and a petroleum-based polyol are investigated to evaluate their miscibility for polyurethane blends. The two polyols were found to be miscible at different ratios over a temperature range from 25 to 90 degrees C. Blends with different ratios of these two polyols were used to prepare polyurethane foams. With increasing levels of bio-based polyol content, the density of the open cell foams increased. The thermal stability of the polyurethane foams improved, and their thermal conductivity increased, with increasing bio-content, while the foam's compression strength decreased. This study provides a method to evaluate polyol blends for the preparation of polymeric materials that balances economic and environmental considerations.
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