IJSRP, Volume 3, Issue 8, August 2013 Edition [ISSN 2250-3153]
K. K. D. Sengphet, K. Pasomsouk, Tsutomu Sato, M. N. Ahmad Fauzi, O. Radzali
Porous clay ceramics were fabricated by using kenaf powder waste (KP as a pore-forming agent PFA). The raw clay powder was characterized using XRF, XRD and TGA. Samples were prepared with different kenaf powder wastes (up to 30wt.%) using granulated powder mixtures and followed by hydraulic pressing. After drying, the ceramic green bodies were fired with different temperatures ranging from 1100 to 1175oC for 3 h with a heating rate of 5oC/min. The pore formation and microstructure in the samples were characterized using FE-SEM, while bulk densities, porosities and water absorption were determined using the Archimedes method. Their mechanical properties were also investigated in order to optimize the fabrication process itself. The results obtained showed shrinkages between 11.72-15.90% for the samples. The density values decreased from 1.30 -1.75g/cm3, while porosity was determined to be between 11.86 to 45.64 %. The tensile strength was in the range of 9.06 to 24.05MPa. These results prove that kenaf powder wastes (KP) are potentially capable to produce porous ceramic materials.