Enhancement of the metal‐binding properties of chitosan through synthetic addition of sulfur‐ and nitrogen‐containing compounds

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書誌事項

公開日
1993-06-05
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1002/app.1993.070480908
公開者
Wiley

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説明

<jats:title>Abstract</jats:title><jats:p>Several new chitosan derivatives were synthesized with the intent of forming polymers that could be used in hazardous waste remediation as toxic metal‐binding agents in aqueous environments. The ability of these derivatives to bind Cu<jats:sup>2+</jats:sup>, Pb<jats:sup>2+</jats:sup>, Cd<jats:sup>2+</jats:sup>, and Fe<jats:sup>2+</jats:sup> was tested and compared to chitosan. Four of the new compounds, the products of the reaction of chitosan with mercaptosuccinic acid, thiirane, pyridoxal hydrochloride, and succinamide, show promising results as binding agents for the above metal ions. The compound with mercaptosuccinic acid bound twice as much Cd<jats:sup>2+</jats:sup>, five times as much Pb<jats:sup>2+</jats:sup>, and virtually no Fe<jats:sup>2+</jats:sup> when compared to chitosan. The compound with thiirane bound three times as much Pb<jats:sup>2+</jats:sup>, whereas the pyridoxal hydrochloride derivative bound 30% more Cu<jats:sup>2+</jats:sup> and twice the Pb<jats:sup>2+</jats:sup>. The succinamide derivative gave results comparable to chitosan, but with decreased solubility at low pH. © 1993 John Wiley & Sons, Inc.</jats:p>

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