Investigation of metal polymer nanocomposites

Igoris Prosyčevas 2Judita Puišo 1,2Algimantas Juraitis 2Asta Guobienė 1,2Sigitas S. Tamulevičius 1,2Ramūnas Naujokaitis 1

1. Kaunas University of Technology, Department of Physics, Studentu 56, Kaunas LT-3031, Lithuania
2. Kaunas University of Technology, Institute of Physical Electronics, Savanoriu 271, Kaunas LT-3009, Lithuania

Abstract

Nanocomposites materials consisting of metallic nanoparticles incorporated into polymers have been paid immense attention in today’s research for their potential applications in the fields of catalysis bioengineering, photonics and electronics. Silver particles have also been used to detect DNR and RNR. They also demonstrate great affinity sulfur in living organics, but biological properties of silver are still not understood properly. Processes of nucleation and shaping of nanostructures on surface on polymer substrates were investigated. Ag thin films (thickness 1-20 nm) were deposited on PMMA-PET structures by e-beam evaporation in vacuum. PMMA thin layers were produced from 5% PMMA solutions by dip coating. XRD and AFM were employed to study structural and morphological changes of the nanocomposites. Surface composition of these nanocompoites was investigated by XPS. Changes of optical were registered by UV-VIS and IR measurements. The relative intensity of (111) peak in XRD patter is significantly higher than that for Ag powder diffraction, suggesting a preferred orientation of some Ag grains starting at very early growth stages ( ~ 10 nm). The resistivity was measured as a function of silver layer thickness. The surface plasmon resonance absorption peak is observed at 420 nm. The blue shift in the peak position is associated with a reduction of particle size.

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Presentation: poster at E-MRS Fall Meeting 2005, Symposium E, by Judita Puišo
See On-line Journal of E-MRS Fall Meeting 2005

Submitted: 2005-05-16 10:28
Revised:   2009-06-07 00:44
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