Journals Information
Universal Journal of Materials Science Vol. 6(2), pp. 64 - 77
DOI: 10.13189/ujms.2018.060203
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Nonlinear Loading Effects in Oxide-filled Polyester Nanocomposites Observed by IR-spectroscopy and Lifetime Positron Spectroscopy
Borys M.Gorelov 1, Oleksiy I. Polovina 2, Alla M. Gorb 2,*, Marek Kostrzewa 3, Adam Ingram 3
1 Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, 03164, Kyiv, Ukraine
2 Department of Physics, Taras Shevchenko Kyiv National University, 03127, Kyiv, Ukraine
3 Department of Physics, Opole University of Technology, 45370, Opole, Poland
ABSTRACT
Impact of nanosized oxide particles of titania (rutile) (TiO2) and silica-titania fumed compound on physical properties related to inner structure of a styrene-cross-linked polyester resin have been experimentally studied. The IR-spectroscopy and the positron annihilation lifetime spectroscopy (PAL) were used to study the electronic polarizability of interatomic bonds and the positron annihilation processes with increasing the filler loading. All the nanocomposites show unmonotonous variations in the IR-absorption lines and the positron annihilation parameters. Three lifetime components, namely 蟿1, 蟿2, and 蟿3 with intensities I1, I2, and I3 have been determined. The lifetime loading dependences exhibit non-monotonous lowering within the low loading range (Cm 鈮� 5%) with the minima values at Cm ~ 1.5 % for the unfilled resin and the nanocomposites. The free-volume portion fv (in %) in a polymer matrix decreases droningly for the nanocomposites with STO-particles upon loading while for the TiO2-nanocomposites it increases non-monotonously. The parameters describing the supramolecular structure of the nanocomposites have been calculated using the fractal approach. Some correlations between loading-dependent PAL-properties and underlying alterations in the resin's supramolecular structure have been discussed.
KEYWORDS
Polyester Resin, Titanium Oxides, Nanocomposite, Positron Annihilation, Positronium, IR Absorption, Fractal Analysis, Supramolecular Structure
Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Borys M.Gorelov , Oleksiy I. Polovina , Alla M. Gorb , Marek Kostrzewa , Adam Ingram , "Nonlinear Loading Effects in Oxide-filled Polyester Nanocomposites Observed by IR-spectroscopy and Lifetime Positron Spectroscopy," Universal Journal of Materials Science, Vol. 6, No. 2, pp. 64 - 77, 2018. DOI: 10.13189/ujms.2018.060203.
(b). APA Format:
Borys M.Gorelov , Oleksiy I. Polovina , Alla M. Gorb , Marek Kostrzewa , Adam Ingram (2018). Nonlinear Loading Effects in Oxide-filled Polyester Nanocomposites Observed by IR-spectroscopy and Lifetime Positron Spectroscopy. Universal Journal of Materials Science, 6(2), 64 - 77. DOI: 10.13189/ujms.2018.060203.