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Citation: LEI Zhong-Li, FAN You-Hua. Preparation and Characterization of Silver Nanocomposites Based on Copolymers[J]. Acta Physico-Chimica Sinica, ;2006, 22(08): 1021-1024. doi: 10.3866/PKU.WHXB20060822 shu

Preparation and Characterization of Silver Nanocomposites Based on Copolymers

1.
College of Chemistry and Materials Science, Shaanxi Normal University, Xi'an 710062, P. R. China

Received Date: 10 January 2006
Available Online: 7 July 2006

Well-defined silver nanocomposites were prepared by using copolymer polyacrylonitrile-block-poly(ethylene glycol)-block-polyacrylonitrile (PAN-b-PEG-b-PAN) as stabilizer under ultrasonic irradiation. The product was characterized by X-ray diffraction (XRD), Fourier transfer infrared spectrometer (FTIR), transmission electron microscope(TEM), UV-Vis spectrum, and thermal gravity analysis (TGA). FTIR results revealed that the PEG backbone had not been destroyed after ultrasonic irradiation. Low initial silver ion concentration allowed for yielding silver nanoparticles with a small size and the size of the silver nanoparticles increased with the increasing of silver ion concentration. The size of the silver nanoparticles decreased with the increasing of the copolymers concentration. The mechanism of forming silver nanoparticles was discussed.
- Composite;Ultrasonic irradiation;Copolymer;Silver nanocomposite
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