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Erschienen in: Journal of Materials Science 5/2020

30.10.2019 | Composites & nanocomposites

Influence of polymer molecular weight on the properties of in situ synthesized silver–methylcellulose nanocomposite films with a CO2 laser

verfasst von: Hayato Nishikawa, Eiji Nakata, Shun Nakano, Takashi Nakajima, Takashi Morii

Erschienen in: Journal of Materials Science | Ausgabe 5/2020

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Abstract

We investigate the influence of polymer molecular weight on the properties of silver–methylcellulose (Ag–MC) nanocomposite films synthesized by the irradiation of a CO2 laser. Although the reduction power of MC with a smaller molecular weight turns out to be stronger than that with a larger molecular weight in the solution phase, we do not see such a clear difference when MC is in the matrix phase. For the 30 s irradiation at the laser power of 0.8 W, the size of Ag nanoparticles (NPs) in the two types of MC matrix is similar, and it is about 30 nm. However, for the longer irradiation time at the same laser power, aggregation of Ag NPs set in, and it is more serious for the Ag–MC film with MC of larger molecular weight. We also carry out the antibacterial test with the Ag–MC films, and find that the Ag–MC film synthesized at the lower laser power and shorter irradiation time generally exhibits a stronger antibacterial effect.

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Metadaten
Titel
Influence of polymer molecular weight on the properties of in situ synthesized silver–methylcellulose nanocomposite films with a CO2 laser
verfasst von
Hayato Nishikawa
Eiji Nakata
Shun Nakano
Takashi Nakajima
Takashi Morii
Publikationsdatum
30.10.2019
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 5/2020
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-019-04149-5

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