期刊
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
卷 32, 期 2, 页码 553-558出版社
WILEY-V C H VERLAG GMBH
DOI: 10.5012/bkcs.2011.32.2.553
关键词
Acryloylphenylalanine; Silver nanocomposite hydrogels; Silver nanoparticles; Swelling; Antibacterial study
资金
- Ministry of Education, Science and Technology [NRF 2009-0094066]
Copolymeric silver nanocomposite hydrogels were synthesized by using acryloyl phenylalanine (APA), N'-isopropylacrylamide (NIPAM) and crosslinked by N,N-methylene bisacrylamide (MBA) via radical redox polymerization. Present study allows entrapping silver nanoparticles into hydrogel networks. UV-visible spectroscopy and X-ray diffraction (XRD) studies confirmed the formation of silver nanoparticles in hydrogel matrix. 11% of weight loss difference between hydrogel and silver nanocomposite hydrogel is clearly indicates the formation and silver nanoparticles by thermo-gravimetrical analysis. The order of swelling capacity values of hydrogels and silver nanocmposite hydrogels were found to be in the order of placebo copolymeric hydrogel > Ag-copolymeric silver nanocomposite hydrogels. The particle size of silver nanoparticles was analysed and are in the range of 5 - 10 nm which has been confirmed by transmission electron microscopy (TEM) as well as particle size analysis. The silver nanocomposite hydrogel has shown very good antibacterial activity on gram-positive and gram-negative bacteriocides.
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