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Unformatted text preview: iah Kuala University, Darussalam-Banda Aceh Mathematics Department, Syiah Kuala University, Darussalam-Banda Aceh E-mail: [email protected] 1 Hydroxylized castor oil is made from commercial Jatropha oil by hydroxylation process, carried out using water in acid condition with a variation of sulphuric acid concentration from 0 to 35 % (v/v). This work aim to obtain more hydroxyl groups (-OH) in castor oil, so there was more reaction between oil and MDI, and hope a dense membrane would be produced. The optimum conditition showed that iodine number of 68 g/g and hydroxyl number of 161.7 mg/g at acid concentration of 35 % (v/v), these properties different from original oil. Analyzed using FTIR spectroscopy indicated that the oil -1 components had a broad absorption of hydroxyl group at wave number 3100 to 3300 cm . To obtain an optimum performance of membrane in reverse osmosis application, so monomer composition, temperature and time of polymerization process were varied. From this step, PU membrane with a o composition of MDI and hydroxylized castor oil 1.6: 5.0 (w/v) at temperature 190 C and time 24 hours had an optimum properties. The characteristics of membrane were as follows: complete polymerization o o reaction, glass transition temperature of 285 C; decomposition temperature of 530 C, and tensile 2 strength 140.8 kgf/mm . Application of PU membrane with optimum performance on brackish water 2 2 desalination at 20 kgf/cm showed that a flux of 18 L/m h and a rejection coefficient of 26 %. Membrane had homogenous and smooth morphology before and after reverse osmosis application. 232 3rd ICYC 2010 Universiti Sains Malaysia POLY-P10 23rd-25th June 2010 MECHANICAL, THERMAL AND MORPHOLOGICAL PROPERTIES OF EPOXY/GLASS FIBER/PRECIPITATED NANO CALCIUM CARBONATE HYBRID COMPOSITES N.H Mohd. Zulfli and *W.S Chow School of Materials and Mineral Resources Engineering, Engin eering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Pulau Pinang, Malaysia E-mail: [email protected]..
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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