@article{(Open Science Index):https://publications.waset.org/pdf/9951,
	  title     = {Synthesis of Unconventional Materials Using Chitosan and Crown Ether for Selective Removal of Precious Metal Ions},
	  author    = {Rabindra Prasad Dhakal and  Tatsuya Oshima and  Yoshinari Baba},
	  country	= {},
	  institution	= {},
	  abstract     = {The polyfunctional and highly reactive bio-polymer,
the chitosan was first regioselectively converted into dialkylated
chitosan using dimsyl anionic solution(NaH in DMSO) and
bromodecane after protecting amino groups by phthalic anhydride.
The dibenzo-18-crown-6-ether, on the other hand, was converted into
its carbonyl derivatives via Duff reaction prior to incorporate into
chitosan by Schiff base formation. Thus formed diformylated
dibenzo-18-crown-6-ether was condensed with lipophilic chitosan to
prepare the novel solvent extraction reagent. The products were
characterized mainly by IR and 1H-NMR. Hence, the multidentate
crown ether-embedded polyfunctional bio-material was tested for
extraction of Pd(II) and Pt(IV) in aqueous solution.},
	    journal   = {International Journal of Chemical and Molecular Engineering},
	  volume    = {3},
	  number    = {8},
	  year      = {2009},
	  pages     = {388 - 392},
	  ee        = {https://publications.waset.org/pdf/9951},
	  url   	= {https://publications.waset.org/vol/32},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 32, 2009},
	}