02102nas a2200229   4500008004100000022001400041245010400055210006900159260009900228300001200327490000700339520126100346653001301607653002501620653001801645653001501663653000801678653001001686100002101696700002301717856013201740       2008                        eng d  a0144-861700aMorphological study of heavy metal complexes of chitosan and crosslinked chitosans by SEM and WAXRD0 aMorphological study of heavy metal complexes of chitosan and cro  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLANDbELSEVIER SCI LTDcMAR  a698-7020 v713 a<p>Metal complexes of salts of Hg, Cu, Cd, Pb, Zn, and Mn with chitosan and crosslinked chitosans were prepared, and their morphologies were studied using scanning electron microscopy and wide angle X-ray diffraction. The metal ions which were specifically and strongly complexed to the amino functions of chitosans, like Hg, showed smooth surface morphology inspite of large number of ions complexed (372 mg/g of chitosan). The presence of metal ions on the surface of the chitosans could be detected with decrease in metal ion binding, in the following sequence Hg &gt; Cu &gt; Cd &gt; Zn &gt; Pb &gt; Mn. Particularly in the case of Pb ions, the presence of these ions is clearly seen on the surface of the polymer by SEM. The number of ions of Mn complexed on the polymers was too few (5 mg/g of chitosan) to be visible. SEM of Hg and Cu complexes do not show the ``holes'' observed in the crosslinked polymers as they bind specifically to amino groups of chitosan, but for Cd, Zn, Mn, and Pb complexes, these ``holes'' are clearly visible. These results are also in agreement with the morphologies studied by WAXRD. The metal complexation data for each of these metal ions was also in the same sequence. (c) 2007 Elsevier Ltd. All rights reserved.</p>10aChitosan10aCrosslinked chitosan10ametal complex10aMorphology10aSEM10aWAXRD1 aTrimukhe, K., D.1 aVarma, Anjanikumar  uhttps://library.ncl.res.in/content/morphological-study-heavy-metal-complexes-chitosan-and-crosslinked-chitosans-sem-and-waxrd-0