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Unformatted text preview: an G” indicating that the NLC exhibits colloid state. The results also found that storing temperature at 5 °C is better than that at 25 °C. Finally, the effects of wax and oil were also discussed in this study. 157 23rd-25th June 2010 3rd ICYC 2010 Universiti Sains Malaysia MAT-P8 INFLUENCE OF RICE HUSK POWDER LOADING ON CURING CHARACTERISTICS AND FATIQUE LIFE OF RICE HUSK POWDER FILLED NATURAL RUBBER COMPOSITES
1 Supalak Attharangsan, Mohamad Abu Bakar, Jamil Ismail and Hanafi Ismail 1 1 2 2 School of Chemical Sciences, Universiti Sains Malaysia, Pulau Pinang, Malaysia School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, Pulau Pinang, Malaysia E-mail: [email protected] 1 The effect of rice husk powder loading on curing characteristics, in terms of cure time, scorch time and maximum torque, and fatique life of the rice husk powder filled natural rubber composites was evaluated. The rubber composites were prepared using a laboratory -sized two-roll mill maintained at about 70 °C and the filler loading was varied from 0 to 40 phr. The results indicated that the cure time, scorch time and fatique life decreased with increasing filler loading, while the maximum torque increased. Moreover, incorporation of rice husk powder into the rubber matrix also showed strong influence on fatique life of the rubber composites. Poor dispersion of rice husk powder in rubber matrix was proved using scanning electron microscopy (SEM). MAT-P9 VANADIUM INCORPORATED RICE HUSK SILICA CATALYST FOR THE LIQUID-PHASE OXIDATION OF ACETOPHENONE Chew Thiam Seng and Farook Adam School of Chemical Sciences, Universiti Sains Malaysia, 11800 Pulau Pinang, Malaysia E-mail:[email protected] A series of vanadium incorporated rice husk silica catalysts with (1-12) wt % V loading were synthesized at pH 9. The TEM micrograph of the silica precursor, RH -Silica revealed spherical nanoparticles whose size ranged from 20 – 24 nm. The vanadium incorporated catalysts showed narrow 2 -1 pore size distribution with BET surface area ranging from 245.2 – 272.7 m g . XRD patterns of the catalysts showed the metal to be well dispersed. The...
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This note was uploaded on 02/17/2011 for the course CHEMISTRY 101 taught by Professor Csr during the Spring '11 term at University of Louisville.
- Spring '11