Improvement of epoxy resin properties by incorporation of TiO2 nanoparticles surface modified with gallic acid esters
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2014
Authors
Radoman, Tijana SDžunuzović, Jasna

Jeremić, Katarina B.
Grgur, Branimir N.

Milicevic, Dejan S

Popović, Ivanka G.

Džunuzović, Enis S.

Article (Published version)

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Epoxy resin/titanium dioxide (epoxy/TiO2) nanocomposites were obtained by incorporation of TiO2 nanoparticles surface modified with gallic acid esters in epoxy resin. TiO2 nanoparticles were obtained by acid catalyzed hydrolysis of titanium isopropoxide and their structural characterization was performed by X-ray diffraction and transmission electron microscopy. Three gallic acid esters, having different hydrophobic part, were used for surface modification of the synthesized TiO2 nanoparticles: propyl, hexyl and lauryl gallate. The gallate chemisorption onto surface of TiO2 nanoparticles was confirmed by Fourier transform infrared and ultraviolet-visible spectroscopy, while the amount of surface-bonded gallates was determined using thermogravimetric analysis. The influence of the surface modified TiO2 nanoparticles, as well as the length of hydrophobic part of the gallate used for surface modification of TiO2 nanoparticles, on glass transition temperature, barrier, dielectric and antic...orrosive properties of epoxy resin was investigated by differential scanning calorimetry, water vapor transmission test, dielectric spectroscopy, electrochemical impedance spectroscopy and polarization measurements. Incorporation of surface modified TiO2 nanoparticles in epoxy resin caused increase of glass transition temperature and decrease of the water vapor permeability of epoxy resin. The water vapor transmission rate of epoxy/TiO2 nanocomposites was reduced with increasing hydrophobic part chain length of gallate ligand. Dielectric constant of examined nanocomposites was influenced by gallate used for the modification of TiO2 nanoparticles. The nanocomposites have better anticorrosive properties than pure epoxy resin, because the surface modified TiO2 nanoparticles react as oxygen scavengers, which inhibit steel corrosion by cathodic mechanism.
Keywords:
Epoxy/TiO2 nanocomposites / Surface modification / Glass transition temperature / Water vapor permeability / Electrochemical impedance spectroscopy / Corrosion currentSource:
Materials & Design, 2014, 62, 158-167Publisher:
- Elsevier Sci Ltd, Oxford
Funding / projects:
- Synthesis and characterization of novel functional polymers and polymeric nanocomposites (RS-172062)
DOI: 10.1016/j.matdes.2014.05.015
ISSN: 0261-3069
WoS: 000340047400020
Scopus: 2-s2.0-84901850777
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IHTMTY - JOUR AU - Radoman, Tijana S AU - Džunuzović, Jasna AU - Jeremić, Katarina B. AU - Grgur, Branimir N. AU - Milicevic, Dejan S AU - Popović, Ivanka G. AU - Džunuzović, Enis S. PY - 2014 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/1552 AB - Epoxy resin/titanium dioxide (epoxy/TiO2) nanocomposites were obtained by incorporation of TiO2 nanoparticles surface modified with gallic acid esters in epoxy resin. TiO2 nanoparticles were obtained by acid catalyzed hydrolysis of titanium isopropoxide and their structural characterization was performed by X-ray diffraction and transmission electron microscopy. Three gallic acid esters, having different hydrophobic part, were used for surface modification of the synthesized TiO2 nanoparticles: propyl, hexyl and lauryl gallate. The gallate chemisorption onto surface of TiO2 nanoparticles was confirmed by Fourier transform infrared and ultraviolet-visible spectroscopy, while the amount of surface-bonded gallates was determined using thermogravimetric analysis. The influence of the surface modified TiO2 nanoparticles, as well as the length of hydrophobic part of the gallate used for surface modification of TiO2 nanoparticles, on glass transition temperature, barrier, dielectric and anticorrosive properties of epoxy resin was investigated by differential scanning calorimetry, water vapor transmission test, dielectric spectroscopy, electrochemical impedance spectroscopy and polarization measurements. Incorporation of surface modified TiO2 nanoparticles in epoxy resin caused increase of glass transition temperature and decrease of the water vapor permeability of epoxy resin. The water vapor transmission rate of epoxy/TiO2 nanocomposites was reduced with increasing hydrophobic part chain length of gallate ligand. Dielectric constant of examined nanocomposites was influenced by gallate used for the modification of TiO2 nanoparticles. The nanocomposites have better anticorrosive properties than pure epoxy resin, because the surface modified TiO2 nanoparticles react as oxygen scavengers, which inhibit steel corrosion by cathodic mechanism. PB - Elsevier Sci Ltd, Oxford T2 - Materials & Design T1 - Improvement of epoxy resin properties by incorporation of TiO2 nanoparticles surface modified with gallic acid esters VL - 62 SP - 158 EP - 167 DO - 10.1016/j.matdes.2014.05.015 ER -
@article{ author = "Radoman, Tijana S and Džunuzović, Jasna and Jeremić, Katarina B. and Grgur, Branimir N. and Milicevic, Dejan S and Popović, Ivanka G. and Džunuzović, Enis S.", year = "2014", abstract = "Epoxy resin/titanium dioxide (epoxy/TiO2) nanocomposites were obtained by incorporation of TiO2 nanoparticles surface modified with gallic acid esters in epoxy resin. TiO2 nanoparticles were obtained by acid catalyzed hydrolysis of titanium isopropoxide and their structural characterization was performed by X-ray diffraction and transmission electron microscopy. Three gallic acid esters, having different hydrophobic part, were used for surface modification of the synthesized TiO2 nanoparticles: propyl, hexyl and lauryl gallate. The gallate chemisorption onto surface of TiO2 nanoparticles was confirmed by Fourier transform infrared and ultraviolet-visible spectroscopy, while the amount of surface-bonded gallates was determined using thermogravimetric analysis. The influence of the surface modified TiO2 nanoparticles, as well as the length of hydrophobic part of the gallate used for surface modification of TiO2 nanoparticles, on glass transition temperature, barrier, dielectric and anticorrosive properties of epoxy resin was investigated by differential scanning calorimetry, water vapor transmission test, dielectric spectroscopy, electrochemical impedance spectroscopy and polarization measurements. Incorporation of surface modified TiO2 nanoparticles in epoxy resin caused increase of glass transition temperature and decrease of the water vapor permeability of epoxy resin. The water vapor transmission rate of epoxy/TiO2 nanocomposites was reduced with increasing hydrophobic part chain length of gallate ligand. Dielectric constant of examined nanocomposites was influenced by gallate used for the modification of TiO2 nanoparticles. The nanocomposites have better anticorrosive properties than pure epoxy resin, because the surface modified TiO2 nanoparticles react as oxygen scavengers, which inhibit steel corrosion by cathodic mechanism.", publisher = "Elsevier Sci Ltd, Oxford", journal = "Materials & Design", title = "Improvement of epoxy resin properties by incorporation of TiO2 nanoparticles surface modified with gallic acid esters", volume = "62", pages = "158-167", doi = "10.1016/j.matdes.2014.05.015" }
Radoman, T. S., Džunuzović, J., Jeremić, K. B., Grgur, B. N., Milicevic, D. S., Popović, I. G.,& Džunuzović, E. S.. (2014). Improvement of epoxy resin properties by incorporation of TiO2 nanoparticles surface modified with gallic acid esters. in Materials & Design Elsevier Sci Ltd, Oxford., 62, 158-167. https://doi.org/10.1016/j.matdes.2014.05.015
Radoman TS, Džunuzović J, Jeremić KB, Grgur BN, Milicevic DS, Popović IG, Džunuzović ES. Improvement of epoxy resin properties by incorporation of TiO2 nanoparticles surface modified with gallic acid esters. in Materials & Design. 2014;62:158-167. doi:10.1016/j.matdes.2014.05.015 .
Radoman, Tijana S, Džunuzović, Jasna, Jeremić, Katarina B., Grgur, Branimir N., Milicevic, Dejan S, Popović, Ivanka G., Džunuzović, Enis S., "Improvement of epoxy resin properties by incorporation of TiO2 nanoparticles surface modified with gallic acid esters" in Materials & Design, 62 (2014):158-167, https://doi.org/10.1016/j.matdes.2014.05.015 . .