Improvement of Carbon Nanotubes Dispersivity in Poly(Styrene/Methacrylate) Composites by Chemical Functionalization (CROSBI ID 614537)
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Podaci o odgovornosti
Faraguna, Fabio ; Vidović, Elvira ; Jukić, Ante
engleski
Improvement of Carbon Nanotubes Dispersivity in Poly(Styrene/Methacrylate) Composites by Chemical Functionalization
In this work the composite materials of improved properties based on styrene and methacrylate (co)polymers with differently functionalized multiwalled carbon nanotubes (CNT) were prepared. In order to obtain a fine dispersion and to enhance the interfacial interaction of CNT with surrounding polimer matrix a chemical modification of the surface of carbon nanotubes was performed. Functionalization of CNTs was confirmed by FTIR, Raman and X-ray photoelectron spectroscopy as well as by contact angle method. Dodecyl and ethylbenzene ester modified carbon nanotubes showed contact angle for water 150 and 141 degrees, while the oxidized and methyl ester modified CNT displayed seepage. Dispersibility of all modified carbon nanotubes in methanol and toluene was quantified by UV-Vis spectroscopy and differs considerably in both solvents for all systems, due to the significant change in chemistry of surface of CNTs. Mixtures of styrene/methacrylate monomer with 1 wt % of CNT in toluene were reacted in a radical in-situ polymerization reaction. The synthesized composites were characterized by the SEC, TGA, DMA, SEM. The improvement of the properties of polymer/CNT composite can be attributed to better interaction between nanotubes and the polymer matrix.
carbon nanotubes; functionalization; dispersivity; polymer composites
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Podaci o prilogu
2014.
objavljeno
Podaci o matičnoj publikaciji
Podaci o skupu
1st International Electronic Conference on Materials
ostalo
26.05.2014-10.06.2014
Online skup