Abstract - Synthesis of Modifed Natural Rubber-stabilised Silver Organosols via Liquid-to-liquid Transfer Techniques


	Journals and Publications


	Publications of MRB Latest Publications MRB Digest Journal of Rubber Research 3^rd Qtr 2008 Vol 11(3) 2^nd Qtr 2008 Vol 11(2) 1^st Qtr 2008 Vol 11(1) 4^th Qtr 2007 Vol 10(4) 3^rd Qtr 2007 Vol 10(3) 2^nd Qtr 2007 Vol 10(2) 1^st Qtr 2007 Vol 10(1) 1^st Qtr 2006 Vol 9(1) 2^nd Qtr 2006 Vol 9(2) 3^rd Qtr 2006 Vol 9(3) 4^th Qtr 2006 Vol 9(4) Submit paper/article Order Form	Abstract Synthesis of Modifed Natural Rubber-stabilised Silver Organosols via Liquid-to-liquid Transfer Techniques M. Abu Bakar#, W.L. Tan, N.J. Azizi* and N.H.H. Abu Bakar* A simple one- and two-step phase transfer technique in synthesizing silver nanoparticles is described. The silver ions are reduced using sodium borohydride either before (one-step method) or after (two-step method) adding the organic phase. 2-propanol was employed as a transferring agent whereas tetraoctylammonium-bromide and 50% epoxidised natural rubber (ENR-50) was used as the stabiliser in aqueous and organic layer, respectively. Both of the methods described are of comparable efficiency in transferring ions/particles whereby based on the atomic absorption spectroscopy determination, more than 93% of the silver ions/particles were transported into the toluene layer. The samples were characterised by UV-vis, FTIR, TEM and XRD. The UV-vis spectra and XRD pattern indicated the formation of silver nanoparticles. Size and size distribution analysis of the as-formed silver nanoparticles showed that two-step phase transfer method gave smaller particle size as well as narrower size distribution. The average size and standard deviation of silver nanoparticles for the one-step and two-step method in the organic layer was 18.4 nm ± 9.5 nm and 15 nm ± 5.8 nm, respectively. back
The Government and Malaysian Rubber Board shall not be liable for any loss or damage caused by the usage of any information obtained from this site. Malaysian Rubber Board 2002. All Rights Reserved. Best viewed with Internet Explorer 6.x browser.