Preparation of MEMO silane-coated SiO2 nanoparticles under high pressure of carbon dioxide and ethanol
Samo za registrovane korisnike
2010
Autori
Stojanović, DušicaOrlović, Aleksandar
Glišić, Sandra
Marković, Smilja
Radmilović, Velimir R.
Uskoković, Petar
Aleksić, Radoslav
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
The objective of this study is to investigate and compare methods of nanosilica coating with gamma-methacryloxypropyltrimethoxy (MEMO) silane using supercritical carbon dioxide and carbon dioxide-ethanol mixture. Characterization of grafted silane coupling agent on the nanosilica surface was performed by the infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). The d(50) value and particle size distribution were determined by laser particle size analyzer (PSA). The operating parameters of silanization process at 40 degrees C, such as the silica/silane weight ratio, the presence of ethanol, and the pressure, were found to be important for the successful coating of silica particles with minimum agglomeration. The results indicate that presence of ethanol in high-pressure carbon dioxide plays an important role in achieving successful deagglomeration of coated nanoparticles. Dynamic mechanical analysis (DMA) and scanning electron microscopy (SEM) revealed that dispersion of th...e silica particles in the PMMA matrix and interfacial adhesion between silica particles and polymer matrix were enhanced, when silica nanoparticles treated with silane under high pressure of carbon dioxide and ethanol were used for the nanocomposite preparation.
Ključne reči:
Supercritical coating / Nanoparticles / Silanization / Supercritical mixture of carbon dioxide and ethanol / NanocompositeIzvor:
Journal of Supercritical Fluids, 2010, 52, 3, 276-284Izdavač:
- Elsevier, Amsterdam
Finansiranje / projekti:
- Sinteza funkcionalnih materijala sa kontrolisanom strukturom na molekularnom i nano nivou (RS-MESTD-MPN2006-2010-142006)
- U.S. Department of EnergyUnited States Department of Energy (DOE) [DE-AC02-05CH11231]
DOI: 10.1016/j.supflu.2010.02.004
ISSN: 0896-8446
WoS: 000277058200005
Scopus: 2-s2.0-77949320349
Institucija/grupa
Tehnološko-metalurški fakultetTY - JOUR AU - Stojanović, Dušica AU - Orlović, Aleksandar AU - Glišić, Sandra AU - Marković, Smilja AU - Radmilović, Velimir R. AU - Uskoković, Petar AU - Aleksić, Radoslav PY - 2010 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1701 AB - The objective of this study is to investigate and compare methods of nanosilica coating with gamma-methacryloxypropyltrimethoxy (MEMO) silane using supercritical carbon dioxide and carbon dioxide-ethanol mixture. Characterization of grafted silane coupling agent on the nanosilica surface was performed by the infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). The d(50) value and particle size distribution were determined by laser particle size analyzer (PSA). The operating parameters of silanization process at 40 degrees C, such as the silica/silane weight ratio, the presence of ethanol, and the pressure, were found to be important for the successful coating of silica particles with minimum agglomeration. The results indicate that presence of ethanol in high-pressure carbon dioxide plays an important role in achieving successful deagglomeration of coated nanoparticles. Dynamic mechanical analysis (DMA) and scanning electron microscopy (SEM) revealed that dispersion of the silica particles in the PMMA matrix and interfacial adhesion between silica particles and polymer matrix were enhanced, when silica nanoparticles treated with silane under high pressure of carbon dioxide and ethanol were used for the nanocomposite preparation. PB - Elsevier, Amsterdam T2 - Journal of Supercritical Fluids T1 - Preparation of MEMO silane-coated SiO2 nanoparticles under high pressure of carbon dioxide and ethanol EP - 284 IS - 3 SP - 276 VL - 52 DO - 10.1016/j.supflu.2010.02.004 ER -
@article{ author = "Stojanović, Dušica and Orlović, Aleksandar and Glišić, Sandra and Marković, Smilja and Radmilović, Velimir R. and Uskoković, Petar and Aleksić, Radoslav", year = "2010", abstract = "The objective of this study is to investigate and compare methods of nanosilica coating with gamma-methacryloxypropyltrimethoxy (MEMO) silane using supercritical carbon dioxide and carbon dioxide-ethanol mixture. Characterization of grafted silane coupling agent on the nanosilica surface was performed by the infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). The d(50) value and particle size distribution were determined by laser particle size analyzer (PSA). The operating parameters of silanization process at 40 degrees C, such as the silica/silane weight ratio, the presence of ethanol, and the pressure, were found to be important for the successful coating of silica particles with minimum agglomeration. The results indicate that presence of ethanol in high-pressure carbon dioxide plays an important role in achieving successful deagglomeration of coated nanoparticles. Dynamic mechanical analysis (DMA) and scanning electron microscopy (SEM) revealed that dispersion of the silica particles in the PMMA matrix and interfacial adhesion between silica particles and polymer matrix were enhanced, when silica nanoparticles treated with silane under high pressure of carbon dioxide and ethanol were used for the nanocomposite preparation.", publisher = "Elsevier, Amsterdam", journal = "Journal of Supercritical Fluids", title = "Preparation of MEMO silane-coated SiO2 nanoparticles under high pressure of carbon dioxide and ethanol", pages = "284-276", number = "3", volume = "52", doi = "10.1016/j.supflu.2010.02.004" }
Stojanović, D., Orlović, A., Glišić, S., Marković, S., Radmilović, V. R., Uskoković, P.,& Aleksić, R.. (2010). Preparation of MEMO silane-coated SiO2 nanoparticles under high pressure of carbon dioxide and ethanol. in Journal of Supercritical Fluids Elsevier, Amsterdam., 52(3), 276-284. https://doi.org/10.1016/j.supflu.2010.02.004
Stojanović D, Orlović A, Glišić S, Marković S, Radmilović VR, Uskoković P, Aleksić R. Preparation of MEMO silane-coated SiO2 nanoparticles under high pressure of carbon dioxide and ethanol. in Journal of Supercritical Fluids. 2010;52(3):276-284. doi:10.1016/j.supflu.2010.02.004 .
Stojanović, Dušica, Orlović, Aleksandar, Glišić, Sandra, Marković, Smilja, Radmilović, Velimir R., Uskoković, Petar, Aleksić, Radoslav, "Preparation of MEMO silane-coated SiO2 nanoparticles under high pressure of carbon dioxide and ethanol" in Journal of Supercritical Fluids, 52, no. 3 (2010):276-284, https://doi.org/10.1016/j.supflu.2010.02.004 . .