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Summary The objective of this research was to reduce an offensive odour by using perlite as an odour-adsorbing filler. Perlite was mixed with highly odorous STR20 and RSS5. Perlite content was varied at 0, 10, 20 and 30 phr. The ability to reduce odour by sensory method and GC-MS were examined. Cure characteristics and mechanical properties, such as tensile strength, hardness and abrasion resistance, were also determined. From the sensory method, the odour reduction efficiency increased with increasing perlite content.With an addition of perlite, the reduction of some components from an offensive odour, such as thiourea and benzothiazole, was also observed using GC-MS technique. Furthermore, the addition of perlite showed an increase in torque difference, a slight change in scorch time and a decrease in cure time, an increase in hardness and abrasion resistance but a decrease in tensile strength. Perlite was shown to be comparable to clay with respect to mechanical properties and potentially be used as low-cost and odour-adsorbing filler. |
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