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A New Approach for the Flocculation Mechanism of Chitosan

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Abstract

A peak III/I ratio (δpeak) in pyrene-fluorescence spectrum was used to measure the polarity of microenvironment of chitosan adsorbing pyrene molecules. The authors detected the pyrene-fluorescence spectrum of chitosan with different degrees of deacetylation (DD) and determined the relationship between the flocculation of bentonite colloid and the δpeak of chitosan with a different molecular weight (MW) and DD. It can be concluded that MW rather than DD plays a key role in the flocculation and that bond bridging rather than charge neutralization dominates the flocculation with chitosan from a microenvironmental structure of view.

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Authors and Affiliations

  1. School of Environment Science and Engineering, Donghua University, 1882 Yan-An Road West, Shanghai, China, 200051

    Liang Chen, Donghui Chen & Chongliang Wu

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  1. Liang Chen
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  2. Donghui Chen
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  3. Chongliang Wu
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Chen, L., Chen, D. & Wu, C. A New Approach for the Flocculation Mechanism of Chitosan. Journal of Polymers and the Environment 11, 87–92 (2003). https://doi.org/10.1023/A:1024656813244

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