Unformatted text preview: e shown that more than 80 % of gambir extract consist mostly flavan monomer, which is catechin and epicatechin. The anti-oxidant properties exhibit in catechin attracts people to study further of its applications. The effect of both Uncaria gambir and catechin hydrate as corrosion inhibitors for mild steel in acidic solution was done using various electrochemical tests such as weight loss, polarization and electrochemical impedance measurements (EIS). The free energy of adsorptio n ΔGads for both Uncaria gambir and catechin hydrate, indicates that the process was spontaneous and physically adsorbed (physisorption) onto the mild steel surface. 143 23rd-25th June 2010 3rd ICYC 2010 Universiti Sains Malaysia MAT-O3 INFLUENCE OF 1-AMINO-9-OCTADECENE SURFACTANT ON THE SYNTHESIS AND PROPERTIES OF TIN OXIDE NANOPARTICLES Muhammad Akhyar Farrukh and Rohana Adnan School of Chemical Sciences, Universiti Sains Malaysia, 11800 Pulau Pinang, Malaysia E-mail: [email protected] Tin oxide nanoparticles were synthesised in non-ionic surfactant of 1-amino-9-octadecene via hydrothermal method. Concentration of 1-amino-9-octadecene remarkably affects the particle size of tin oxide nanoparticles. The effect of surfactant on particle size, particle distribution and morphology were investigated with different techniques; X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Thermogravimetric Analysis (TGA), Atomic Absorption Spectroscopy (AAS), Ultraviolet-Visible Spectroscopy (UV-Vis) and Fourier Transform Infrared (FTIR) spectroscopy. The results showed that surfactant influenced the particles size, their distribution, shape, and surface area of nanoparticles. Nanoparticles with particle size of less than 5 nm were fabricated. MAT-O4 INVESTIGATIONS OF BLOCK CHARACTERISTICS DURING CHAIN SHUTTLING POLYMERIZATION USING HYBRID FUZZY LOGIC GENETIC ALGORITHM
1 Al-Harthi Mamdouh A., Khokhar Zahid H. and Aburraheem A. 2 3 1 2 Department of Polymer Engineering, KFUPM, Dhahran -31261, Saudi Arabia Department of Chemical Engineering, KFUPM, D...
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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