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Carboxymethyl chitosan/clay nanocomposites and their copper complexes: Fabrication and property.
- Source :
-
Carbohydrate polymers [Carbohydr Polym] 2015 Dec 10; Vol. 134, pp. 390-7. Date of Electronic Publication: 2015 Jul 31. - Publication Year :
- 2015
-
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.<br /> (Copyright © 2015 Elsevier Ltd. All rights reserved.)
- 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
Subjects
Details
- Language :
- English
- ISSN :
- 1879-1344
- Volume :
- 134
- Database :
- MEDLINE
- Journal :
- Carbohydrate polymers
- Publication Type :
- Academic Journal
- Accession number :
- 26428139
- Full Text :
- https://doi.org/10.1016/j.carbpol.2015.07.089