Preparation of Biomimetic Materials Made from Polyaspartyl Polymer and Chitosan for Heavy-Metal Removal

By the combination of polyaspartyl polymer and chitosan, a kind of novel environmentally friendly biomimetic blend material with peptide−polysaccharide-resembling structure was synthesized for heavy-metal removal. The resulting blend possesses diversified functional groups and was further modified b...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 2009-11, Vol.48 (22), p.9823-9829
Main Authors: Sun, Bo, Mi, Zhen-Tao, An, Gang, Liu, Guozhu, Zou, Ji-Jun
Format: Article
Language:English
Subjects:
Applied Chemistry
Applied sciences
Chemical engineering
Exact sciences and technology
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Summary:By the combination of polyaspartyl polymer and chitosan, a kind of novel environmentally friendly biomimetic blend material with peptide−polysaccharide-resembling structure was synthesized for heavy-metal removal. The resulting blend possesses diversified functional groups and was further modified by introducing a mercapto group through esterification between thioglycollic acid and hydroxyl group in the structure of chitosan. The polyaspartyl polymer−chitosan blend with 2.2 wt % mercapto group content improves the adsorption of organic compounds of mercury and arsenic. The blend exhibits a lower swelling behavior in the presence of water and is verified to have a potential biodegradability by elemental analysis and infrared spectrum (FT-IR).
ISSN:0888-5885
1520-5045
DOI:10.1021/ie900673h