期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 79, 期 -, 页码 269-277出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2015.05.002
关键词
Hydrogel; Silver nanoparticles; Carboxymethyl cellulose; Layered double hydroxide; Antibacterial
资金
- University of Tabriz [S/27/3243-29]
This paper deals with the preparation of antibacterial nanocomposite hydrogels through the combination of carboxy methyl cellulose (CMC), layered double hydroxides (LDH), and silver nanoparticles (AgNPs). CMC-LDH hydrogels were prepared by intercalating CMC into different LDHs. Then, Ag/CMC-LDH nanocomposite hydrogels were prepared through in situ formation of AgNPs within the CMC-LDHs. XRD analysis confirmed the intercalating CMC into the LDH sheets and formation of intercalated structures, as well as formation of AgNPs within the CMC-LDHs. SEM and TEM micrographs indicated well distribution of AgNPs within the Ag/CMC-LDHs. The prepared hydrogels showed a pH sensitive swelling behavior. The Ag/CMC-LDH nanocomposite hydrogels have rather higher swelling in different aqueous solutions in comparison with CMC-LDHs. The antibacterial activity of CMC-LDHs increased considerably after formation of AgNPs and was stable for more than one month. (C) 2015 Elsevier B.V. All rights reserved.
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