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Preparation, Characterization, and Antimicrobial Activity of Quaternized Chitosan/organic Montmorillonite Nanocomposites by Xiaoying Wang; Yumin Du; Jianhong Yang; Yufeng Tang; Jiwen Luo is a Engineering article available to read on EtoBox.
What is Preparation, Characterization, and Antimicrobial Activity of Quaternized Chitosan/organic Montmorillonite Nanocomposites about?
## Abstract Quaternized chitosan/layered silicate nanocomposite was prepared by simple solution‐mixing in aqueous media. Montmorillonite (MMT) modified with cetyltrimethyl ammonium bromide was used as an organically modified layered silicate. XRD and TEM analyses respectively confirmed that silicate layers of MMT were intercalated and nicely distributed in quaternized chitosan matrix in despite of the high content of MMT (25–50 wt %). The interactions between the quaternized chitosan macromolecules and MMT in aqueous media were analyzed using FTIR, XRD, and ζ‐potential measurements. Antimicrobial studies showed that the nanocomposites could strongly inhibit the growth of a wide variety of microorganisms, including Gram‐positive bacteria, Gram‐negative bacteria, and fungi; more importantly, they exhibited good antimicrobial capacity in whichever medium, in weak acid, water, or weak base. As the amount of MMT increased, the nanocomposites had better inhibitory effect on microorganisms, especially Gram‐positive bacteria. The lowest minimum inhibition concentration (MIC) value of the nanocomposites against __Staphylococcus aureus__ and __Bacillus subtilis__ were less than 0.00313% (w/v
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It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Xiaoying Wang; Yumin Du; Jianhong Yang; Yufeng Tang; Jiwen Luo
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 1549-3296)
- Published
- 2007
- Language
- EN
- Field
- Engineering (Physical Sciences)