Preparation of MEMO silane-coated SiO2 nanoparticles under high pressure of carbon dioxide and ethanol
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2010
Authors
Stojanović, D.Orlović, A.
Glišić, S. B.
Marković, Smilja
Radmilović, Velimir R.
Uskoković, Petar S.
Aleksić, Radoslav
Article (Published version)
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The objective of this study is to investigate and compare methods of nanosilica coating with γ-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 d50 value and particle size distribution were determined by laser particle size analyzer (PSA). The operating parameters of silanization process at 40 °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 part...icles 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. © 2010 Elsevier B.V. All rights reserved.
Keywords:
nanocomposite / nanoparticles / silanization / supercritical coating / supercritical mixture of carbon dioxide and ethanolSource:
Journal of Supercritical Fluids, 2010, 52, 3, 276-284Publisher:
- Elsevier
Funding / projects:
- United States Department of Energy, Office of Science, Office of Basic Energy Sciences, Grant DE-AC02-05CH11231
- Sinteza funkcionalnih materijala sa kontrolisanom strukturom na molekularnom i nano nivou (RS-MESTD-MPN2006-2010-142006)
DOI: 10.1016/j.supflu.2010.02.004
ISSN: 0896-8446
WoS: 000277058200005
Scopus: 2-s2.0-77949320349
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Stojanović, D. AU - Orlović, A. AU - Glišić, S. B. AU - Marković, Smilja AU - Radmilović, Velimir R. AU - Uskoković, Petar S. AU - Aleksić, Radoslav PY - 2010 UR - https://dais.sanu.ac.rs/123456789/3427 AB - The objective of this study is to investigate and compare methods of nanosilica coating with γ-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 d50 value and particle size distribution were determined by laser particle size analyzer (PSA). The operating parameters of silanization process at 40 °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. © 2010 Elsevier B.V. All rights reserved. PB - Elsevier T2 - Journal of Supercritical Fluids T1 - Preparation of MEMO silane-coated SiO2 nanoparticles under high pressure of carbon dioxide and ethanol SP - 276 EP - 284 VL - 52 IS - 3 DO - 10.1016/j.supflu.2010.02.004 UR - https://hdl.handle.net/21.15107/rcub_dais_3427 ER -
@article{ author = "Stojanović, D. and Orlović, A. and Glišić, S. B. and Marković, Smilja and Radmilović, Velimir R. and Uskoković, Petar S. and Aleksić, Radoslav", year = "2010", abstract = "The objective of this study is to investigate and compare methods of nanosilica coating with γ-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 d50 value and particle size distribution were determined by laser particle size analyzer (PSA). The operating parameters of silanization process at 40 °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. © 2010 Elsevier B.V. All rights reserved.", publisher = "Elsevier", journal = "Journal of Supercritical Fluids", title = "Preparation of MEMO silane-coated SiO2 nanoparticles under high pressure of carbon dioxide and ethanol", pages = "276-284", volume = "52", number = "3", doi = "10.1016/j.supflu.2010.02.004", url = "https://hdl.handle.net/21.15107/rcub_dais_3427" }
Stojanović, D., Orlović, A., Glišić, S. B., Marković, S., Radmilović, V. R., Uskoković, P. S.,& Aleksić, R.. (2010). Preparation of MEMO silane-coated SiO2 nanoparticles under high pressure of carbon dioxide and ethanol. in Journal of Supercritical Fluids Elsevier., 52(3), 276-284. https://doi.org/10.1016/j.supflu.2010.02.004 https://hdl.handle.net/21.15107/rcub_dais_3427
Stojanović D, Orlović A, Glišić SB, Marković S, Radmilović VR, Uskoković PS, 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 https://hdl.handle.net/21.15107/rcub_dais_3427 .
Stojanović, D., Orlović, A., Glišić, S. B., Marković, Smilja, Radmilović, Velimir R., Uskoković, Petar S., 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 ., https://hdl.handle.net/21.15107/rcub_dais_3427 .