Enhanced mechanical strength of chitosan hydrogel beads by impregnation with carbon nanotubes

Chitosan (CS) hydrogel beads were impregnated with carbon nanotubes (CNTs), and their mechanical strength, acid stability and adsorption capacity to the anionic dye, Congo red (CR), were investigated by comparing with a conventional reinforcing method of cross-linking with epichlorohydrin (ECH). CS/...

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Bibliographic Details
Published in:Carbon (New York) 2009-10, Vol.47 (12), p.2933-2936
Main Authors: Chatterjee, Sudipta, Lee, Min W., Woo, Seung H.
Format: Article
Language:English
Subjects:
Chemistry
Colloidal gels. Colloidal sols
Colloidal state and disperse state
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Fullerenes and related materials
diamonds, graphite
General and physical chemistry
Materials science
Physics
Specific materials
Surface physical chemistry
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Summary:Chitosan (CS) hydrogel beads were impregnated with carbon nanotubes (CNTs), and their mechanical strength, acid stability and adsorption capacity to the anionic dye, Congo red (CR), were investigated by comparing with a conventional reinforcing method of cross-linking with epichlorohydrin (ECH). CS/CNT hydrogel beads were manufactured by dispersing CNTs (0.01 wt.%) with cetyltrimethylammonium bromide (CTAB) (0.05 wt.%) into CS solution (1 wt.%). Maximum endurable force at complete breakdown of CS hydrogel beads increased from 1.87 to 7.62 N with incorporation of CNTs and its adsorption capacity increased from 178.32 to 423.34 mg g −1 for adsorption of CR.
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2009.06.043