Cellulose Nanocrystal/Silver Nanoparticle Composites as Bifunctional Nanofillers within Waterborne Polyurethane

2012 ◽  
Vol 4 (5) ◽  
pp. 2413-2419 ◽  
Author(s):  
He Liu ◽  
Jie Song ◽  
Shibin Shang ◽  
Zhanqian Song ◽  
Dan Wang
2020 ◽  
Vol 65 (5) ◽  
pp. 446
Author(s):  
O. Nadtoka ◽  
N. Kutsevol ◽  
T. Bezugla ◽  
P. Virych ◽  
A. Naumenko

Polyacrylamide and dextran-graft-polyacrylamide hydrogels are prepared and used as nanoreactors and networks for the synthesis of silver nanoparticles (AgNPs). Photochemical generation of AgNPs is carried out under UV-irradiation of Ag+ ions in swollen hydrogels of different cross-linking densities. The obtained hydrogels and hydrogel/AgNPs composites are characterized by TEM, FTIR, and UV–Vis spectroscopy. Swelling studies have shown a relationship between the structure of the hydrogels and their ability to swell. It is shown that the presence of AgNPs in the polymer network leads to a decrease of the swelling capacity. An increase in the cross-linking density leads to an expansion of the AgNPs size distribution for both types of hydrogels. All synthesized hydrogel-silver nanoparticle composites have shown a high activity in the growth retardation of Staphylococcus aureus microorganisms.


Heterocycles ◽  
2017 ◽  
Vol 95 (2) ◽  
pp. 768
Author(s):  
Hisashi Fujihara ◽  
Noritaka Takeuchi ◽  
Saya Ueda ◽  
Tsukasa Nakahodo

2020 ◽  
Vol 3 (11) ◽  
pp. 11426-11433
Author(s):  
Gui-Fang Liu ◽  
Xing-Xing Qiao ◽  
Yong-Li Cai ◽  
Jian-Ying Xu ◽  
Yong Yan ◽  
...  

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