Effects of surfactants on mechanical and thermal properties of soy-based polyurethane foams
| Autor: | Sudharshan Anandan, K. Chandrashekhara, Gurjot S. Dhaliwal, Paul Ki-souk Nam, Mousumi Bose |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Polymers and Plastics Mineral wool 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surface tension chemistry.chemical_compound chemistry Pulmonary surfactant Thermal Cell density Materials Chemistry Polystyrene Composite material 0210 nano-technology Polyurethane |
| Zdroj: | Journal of Cellular Plastics. 56:611-629 |
| ISSN: | 1530-7999 0021-955X |
| DOI: | 10.1177/0021955x20912200 |
| Popis: | Polyurethane foams are widely used for insulation applications due to their high insulation properties as compared to conventional materials such as extruded polystyrene foam and mineral wool. In this study, soy-based polyurethane foams were prepared using five different surfactants while keeping other components such as soy-based polyol, diisocyanate, catalyst, and blowing agent (water) constant. Prepared samples were tested for mechanical and thermal properties to evaluate the effect of different surfactants used in varying quantities. The morphology of the foam samples was observed using a scanning electron microscope. Seventeen fold reduction in the cell size was observed with an increase in the amount of surfactant from 0.5 to 5.0 g. Samples with higher amounts of surfactant also exhibited a higher number of closed cells. Better thermal insulation was observed for samples with 2.0 and 5.0 g of surfactant as compared to samples with 0.5 g of surfactant. A similar trend was observed in the mechanical strength, moisture absorbance, and density of the fabricated foam samples. |
| Databáze: | OpenAIRE |
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