Equilibrium and Dynamic Surface Tension of Carboxymethylchitosan and Alkyl Trimethylammonium Bromide Mixtures |
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| Authors: | Rong Jiang Yanli Wang Yan Yang |
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| Affiliation: | Institute of Colloid and Interface Chemistry, College of Chemistry and Chemical Engineering, Fuzhou University , Fuzhou , Fujian , P. R. China |
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| Abstract: | A water-soluble derivative of chitosan, carboxymethylchitosan (CMCH), was mixed with alkyltrimethylammoniumbromides (CmTAB) and was studied on the adsorption at air/water interface using equilibrium and dynamic surface tension method. The effects of surfactant and polymer concentrations, surfactant chain length, as well as pH of solution were investigated. Addition of the surfactants remarkably promotes the polymer adsorption. Increasing any one of surfactant concentration, surfactant chain length, and pH will facilitate the adsorption of the mixture whereas little effects of polymer concentration were observed. The results are explained in terms of the interaction between CMCH and CmTAB under different conditions. |
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| Keywords: | Carboxymethylchitosan dynamic adsorption equilibrium polymer and surfactant interaction |
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