COMPARATIVE STUDY OF ACETYLATED SAWDUST POWDER AS FILLER IN NATURAL RUBBER COMPOUNDING

K.O. Eguare , L.O. Ekabafe, M.D. Ayo

Abstract

A comparative study of the filler’s reinforcing potentials of acetylated sawdust, non- acetylated sawdust and those filled with the conventional N330 carbon black was investigated. The sawdust was sourced and characterized in terms of moisture content, bulk density, pH, ash content and iodine adsorption number, using prescribed methods. Natural rubber samples were compounded with 50% acetylated sawdust powder, non- acetylated sawdust powder and with that of the N330 carbon black at filler loading levels of 10phr, 20phr, 30phr, 40phr and 50phr respectively. Standard formulation with efficient vulcanization system was used. The physico mechanical properties of the acetylated sawdust powder filled vulcanizates were compared with those filled with untreated Sawdust and N330 carbon black. The result obtained show that the acetylated sawdust filled vulcanizates present better tensile strength than the untreated sawdust. N330 carbon black had the highest value for tensile test which shows from the result obtained that N330 carbon black is more effective as reinforcing filler than the acetylated sawdust filled and non- acetylated sawdust filled vulcanizates. Read full PDF

Keywords: Sawdust, Loading, Natural rubber, Vulcanizate

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