This manuscript presents experimental studies of composite materials based on poly (L lactic acid) (PLLA) and poly (3-hydroxybutyrate) (PHB) matrices filled with electrolytic copper powder, having a very high dendritic structure. Volume fractions of the copper powder used as filler in all prepared composites were varied in the range 0.5-6.0 vol.%. Samples were prepared by hot moulding injection at 170 degrees C. Influence of particle size and morphology, as well as the influence of matrix type on conductivity and percolation threshold of the obtained composites were examined. Characterization included: electrical conductivity measurements using AC impedance spectroscopy (IS), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) and Fourier-transform Infrared spectroscopy (FTIR). Presence of three-dimensional conductive pathways was confirmed. The obtained percolation thresholds of 2.83 vol.% for PLLA and 3.13 vol.% for PHB composites were measured, which is ab...out three times lower than the ones stated in the literature for similar composites. This property is ascribed to different morphologies of the filler used in the present investigation.
TY - JOUR
AU - Janković, Zoran
AU - Pavlović, Miroslav M.
AU - Pantović Pavlović, Marijana
AU - Nikolić, Nebojša D.
AU - Zečević, Vladan
AU - Pavlović, Miomir
PY - 2018
UR - https://cer.ihtm.bg.ac.rs/handle/123456789/2367
AB - This manuscript presents experimental studies of composite materials based on poly (L lactic acid) (PLLA) and poly (3-hydroxybutyrate) (PHB) matrices filled with electrolytic copper powder, having a very high dendritic structure. Volume fractions of the copper powder used as filler in all prepared composites were varied in the range 0.5-6.0 vol.%. Samples were prepared by hot moulding injection at 170 degrees C. Influence of particle size and morphology, as well as the influence of matrix type on conductivity and percolation threshold of the obtained composites were examined. Characterization included: electrical conductivity measurements using AC impedance spectroscopy (IS), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) and Fourier-transform Infrared spectroscopy (FTIR). Presence of three-dimensional conductive pathways was confirmed. The obtained percolation thresholds of 2.83 vol.% for PLLA and 3.13 vol.% for PHB composites were measured, which is about three times lower than the ones stated in the literature for similar composites. This property is ascribed to different morphologies of the filler used in the present investigation.
PB - Association of Chemists and Chemical Engineers of Serbia
T2 - Hemijska industrija
T1 - Electrical conductivity of poly (L lactic acid) and poly (3-hydroxybutyrate) composites filled with galvanostatically produced copper powder
VL - 72
IS - 5
SP - 285
EP - 292
DO - 10.2298/HEMIND180530020J
ER -
@article{
author = "Janković, Zoran and Pavlović, Miroslav M. and Pantović Pavlović, Marijana and Nikolić, Nebojša D. and Zečević, Vladan and Pavlović, Miomir",
year = "2018",
abstract = "This manuscript presents experimental studies of composite materials based on poly (L lactic acid) (PLLA) and poly (3-hydroxybutyrate) (PHB) matrices filled with electrolytic copper powder, having a very high dendritic structure. Volume fractions of the copper powder used as filler in all prepared composites were varied in the range 0.5-6.0 vol.%. Samples were prepared by hot moulding injection at 170 degrees C. Influence of particle size and morphology, as well as the influence of matrix type on conductivity and percolation threshold of the obtained composites were examined. Characterization included: electrical conductivity measurements using AC impedance spectroscopy (IS), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) and Fourier-transform Infrared spectroscopy (FTIR). Presence of three-dimensional conductive pathways was confirmed. The obtained percolation thresholds of 2.83 vol.% for PLLA and 3.13 vol.% for PHB composites were measured, which is about three times lower than the ones stated in the literature for similar composites. This property is ascribed to different morphologies of the filler used in the present investigation.",
publisher = "Association of Chemists and Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Electrical conductivity of poly (L lactic acid) and poly (3-hydroxybutyrate) composites filled with galvanostatically produced copper powder",
volume = "72",
number = "5",
pages = "285-292",
doi = "10.2298/HEMIND180530020J"
}
Janković, Z., Pavlović, M. M., Pantović Pavlović, M., Nikolić, N. D., Zečević, V.,& Pavlović, M.. (2018). Electrical conductivity of poly (L lactic acid) and poly (3-hydroxybutyrate) composites filled with galvanostatically produced copper powder. in Hemijska industrija
Association of Chemists and Chemical Engineers of Serbia., 72(5), 285-292.
https://doi.org/10.2298/HEMIND180530020J
Janković Z, Pavlović MM, Pantović Pavlović M, Nikolić ND, Zečević V, Pavlović M. Electrical conductivity of poly (L lactic acid) and poly (3-hydroxybutyrate) composites filled with galvanostatically produced copper powder. in Hemijska industrija. 2018;72(5):285-292.
doi:10.2298/HEMIND180530020J .
Janković, Zoran, Pavlović, Miroslav M., Pantović Pavlović, Marijana, Nikolić, Nebojša D., Zečević, Vladan, Pavlović, Miomir, "Electrical conductivity of poly (L lactic acid) and poly (3-hydroxybutyrate) composites filled with galvanostatically produced copper powder" in Hemijska industrija, 72, no. 5 (2018):285-292,
https://doi.org/10.2298/HEMIND180530020J . .
