Then, the NRLF compound was matured for 8 h at room temperature with continuous stirring at 10 rpm. After 8 h of maturation, the NRLF compound was intensively beaten and foamed using a stand mixer (KENWOOD, kMix) until the volume was increased up to three times the initial volume (beating time about 5 Ramasamy et al. (2013). “Rice husk in rubber foam,” BioResources 8(3), 4258-4269.4260
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min).