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Unformatted text preview: the oxydized MWCNTs (o-MWCNTs). The Am,p-MWCNTs was obtained by reaction of the oMWCNTs with with aminomethylphosphonic acid and 1, 10 -diaminodecan. Characterisation of Am,pMWCNTs was done by: fourier transform infrared spectroscopy (FT -IR), transmission electron microscoscopy (TEM), scanning electron microscopy (SEM), energy X-Ray dispersive spectroscopy (EXDS), thermo gravimetry analysis (TGA) and Raman spectroscopy. Preliminary results on the removal of lead from aqueous solutions, revealed that adsorption capacity increases for the Am,p -MWCNTs, when compared to the pristine and oxidized MWCNTs. OTH-P4 SIZE AND SURFACE CHARGE CHARACTERIZATION OF CHITOSAN-COATED FATTY ACID LIPOSOME Tan, H.W. and Misni, M. Chemistry Department, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia E-mail: tanhw@um.edu.my Stealth liposomes are the polyethylene glycol (PEG) -coated lipidic liposome. The PEG provides a steric barrier on the surface of the liposome to enhance stability and improved circulation time. However, it was recently found that their effectiveness to deliver drugs for the second administration had decreased due to the accelerated blood clearance phenomenon. Other polymer -coated liposome was developed such as polyvinyl alcohol, polyactic acid, and polyglycolic acid that offer similar results. In this study, chitosan-coated fatty acid liposome was prepared. The zeta potential of the liposome was significantly reduced from -110 to -68 mV in the present of chitosan. The size of the liposome was also considerably decreased from 130 to 116 nm with polydispersity in dex of 0.257. These results evidently support that the chitosan had successfully adsorbed in to the surface of the liposomes. The chitosan -coated liposome was found to be stable at room temperature for at least 14 days. 238 3rd ICYC 2010 Universiti Sains Malaysia OTH-P5 23rd-25th June 2010 SENSITIVITY AND SPECIFICITY OF THE FECT AGAINST PCR IN DETECTING Entamoeba histolytica INFECTIONS Rosemarie L. Balatbat Department of Biology, Pamantasan ng Lungsod ng...
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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.

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