1. Carboxymethyl chitosan/clay nanocomposites and their copper complexes: Fabrication and property.
- Author
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Huang Y, Huang J, Cai J, Lin W, Lin Q, Wu F, and Luo J
- Subjects
- Anti-Bacterial Agents chemistry, Anti-Bacterial Agents pharmacology, Chitosan chemistry, Clay, Drug Stability, Escherichia coli drug effects, Microbial Sensitivity Tests, Molecular Weight, Temperature, Aluminum Silicates chemistry, Chitosan analogs & derivatives, Copper chemistry, Nanocomposites chemistry, Organometallic Compounds chemistry, Organometallic Compounds pharmacology
- Abstract
To obtain environmentally friendly antifouling agent, an effort was made to intercalate carboxymethyl chitosan into the interlayer of organic montmorillonite to prepare carboxymethyl chitosan/organic montmorillonite nanocomposites and their copper complexes. In comparison, carboxymethyl chitosan-copper complexes were also obtained. Their structures were characterized by X-ray diffaraction, transmittance electron microscopy and Fourier transform infrared, and their thermal behavior and antimicrobial activity were discussed. The results revealed that the interlayer distance of carboxymethyl chitosan/organic montmorillonite nanocomposites enlarged with the increasing mass ratio of carboxymethyl chitosan to organic montmorillonite, when the mass ratio was at 20:1, the layer spacing of carboxymethyl chitosan/organic montmorillonite nanocomposites reached the maximum of 3.68 nm. As compared to other samples, carboxymethyl chitosan/organic montmorillonite-copper nanocomposites showed much higher thermal stability and inhibitory activity against Escherichia coli, the lowest minimum inhibition concentration was only 0.0003125% (w/v). The study provides a new method to find novel antifouling agent., (Copyright © 2015 Elsevier Ltd. All rights reserved.)
- Published
- 2015
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