Effect of potassium oleate on chemical structure-compression relationship of natural rubber foam

Abstract

Rubber foam-based products, such as mattresses, pillows, and cushions, are becoming increasingly popular. Rubber foam's formulation is still being developed to improve the properties, because of its wide range of applications. Potassium oleate is a surfactant for producing the rubber foam, although it can be used in different concentrations to prepare the different properties of rubber foam. The Dunlop method was used in this work, due to its simplicity and easy-to-use in the foam preparation. The effect of potassium oleate, which was used as a foaming agent, was investigated in this study by reducing the amount of potassium oleate. The density, compression, and Fourier transform infrared (FTIR) spectroscopy results showed that both density and compression of foam samples with half amounts of potassium oleate are higher than those of control sample with normal amounts of potassium oleate. Moreover, the FTIR result revealed a significant change in spectra with the reductions of potassium oleate contents. Therefore, rubber foam formulations are still developed to provide the optimum properties for suitable applications.

Binder‐free, non‐carcinogenic surfactant‐based cellulose‐rich bagasse foams as acoustic panels

“…Bagasse pulp and various surfactants to fabricate bagasse foams were used. Among the commonly available surfactants such as sodium dodecyl sulfate (SDS), 39,43 sodium bicarbonate (SB), 44,45 potassium oleate (PO), 46,47 sodium dodecyl benzene sulfonate (SDBS), 48 and polyoxyethylene sorbitol ester 49,50 also known as Tween 20 (T20), SDBS is carcinogenic. Hence, keeping in view of the all-around health, investigations on bagasse foams were made using noncarcinogenic surfactants, for acoustic absorption and transmission loss.…”