Dispersion efficiency of montmorillonites in epoxy nanocomposites using solution intercalation and direct mixing methods
Само за регистроване кориснике
2018
Аутори
Tomić, MilošDunjić, Branko
Nikolić, Marija S.
Maletaškić, Jelena
Pavlović, Vladimir B.
Bajat, Jelena B.
Đonlagić, Jasna A.
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The major aims of this paper are the investigation of the effects of the mixing procedure and the montmorillonite (Mt) surface modification on the structure (optical microscopy, XRD, TEM, SEM), rheological, mechanical properties (DMA, tensile test) and corrosion stability (electrochemical impedance spectroscopy) of clay mineral/epoxy nanocomposite (CPN). Two series of CPN samples were prepared based on diglycidyl ether of bisphenol A (DGEBA) and polyamidoamine curing agent with three organophilic Mt and sodium-montmorillonite (1 wt%). Mt were mixed with DGEBA solution in the powder (direct mixing) and in the form of dispersions, preswollen in a commercial coating thinner (solution intercalation). The commercial Mt (Cloisite 30B) modified by quaternary alkylammonium ions bearing hydroxyl groups and especially Mt functionalized by primary (HDA(+)-Mt) alkylammonium ions, at loadings close to cation exchange capacity (CRC), were significantly swollen by thinner and further uniformly disper...sed into CPN. Meanwhile, low gel volumes in thinner were found for more hydrophobic Mt (Cloisite 15A). The compatibility of Mt with solvents was well described by solubility and Flory-Huggins interaction parameters. In contrast to the direct incorporation of Mt powders in CPN, swelling enhanced intercalation of epoxy matrix into Mt, and for HDA(+)-Mt based CPN interlayer spacing reached 4.4 nm. The usage of HDA(+)-Mt organoclay and solution intercalation procedure provided the highest enhancement in rheological parameters (G, G, of Mt/epoxy dispersions and glassy storage modulus, Youngs modulus and barrier properties of cured CPN.
Кључне речи:
Montmorillonite / Swelling / Epoxy nanocomposites / DispersionИзвор:
Applied Clay Science, 2018, 154, 52-63Финансирање / пројекти:
- Синтеза, процесирање и карактеризација наноструктурних материјала за примену у области енергије, механичког инжењерства, заштите животне стредине и биомедицине (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45012)
- Синтеза, развој технологија добијања и примена наноструктурних мултифункционалних материјала дефинисаних својстава (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45019)
- Синтеза и карактеризација нових функционалних полимера и полимерних нанокомпозита (RS-MESTD-Basic Research (BR or ON)-172062)
DOI: 10.1016/j.clay.2017.12.047
ISSN: 0169-1317; 1872-9053
WoS: 000424722900007
Scopus: 2-s2.0-85040594572
Колекције
Институција/група
VinčaTY - JOUR AU - Tomić, Miloš AU - Dunjić, Branko AU - Nikolić, Marija S. AU - Maletaškić, Jelena AU - Pavlović, Vladimir B. AU - Bajat, Jelena B. AU - Đonlagić, Jasna A. PY - 2018 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1951 AB - The major aims of this paper are the investigation of the effects of the mixing procedure and the montmorillonite (Mt) surface modification on the structure (optical microscopy, XRD, TEM, SEM), rheological, mechanical properties (DMA, tensile test) and corrosion stability (electrochemical impedance spectroscopy) of clay mineral/epoxy nanocomposite (CPN). Two series of CPN samples were prepared based on diglycidyl ether of bisphenol A (DGEBA) and polyamidoamine curing agent with three organophilic Mt and sodium-montmorillonite (1 wt%). Mt were mixed with DGEBA solution in the powder (direct mixing) and in the form of dispersions, preswollen in a commercial coating thinner (solution intercalation). The commercial Mt (Cloisite 30B) modified by quaternary alkylammonium ions bearing hydroxyl groups and especially Mt functionalized by primary (HDA(+)-Mt) alkylammonium ions, at loadings close to cation exchange capacity (CRC), were significantly swollen by thinner and further uniformly dispersed into CPN. Meanwhile, low gel volumes in thinner were found for more hydrophobic Mt (Cloisite 15A). The compatibility of Mt with solvents was well described by solubility and Flory-Huggins interaction parameters. In contrast to the direct incorporation of Mt powders in CPN, swelling enhanced intercalation of epoxy matrix into Mt, and for HDA(+)-Mt based CPN interlayer spacing reached 4.4 nm. The usage of HDA(+)-Mt organoclay and solution intercalation procedure provided the highest enhancement in rheological parameters (G, G, of Mt/epoxy dispersions and glassy storage modulus, Youngs modulus and barrier properties of cured CPN. T2 - Applied Clay Science T1 - Dispersion efficiency of montmorillonites in epoxy nanocomposites using solution intercalation and direct mixing methods VL - 154 SP - 52 EP - 63 DO - 10.1016/j.clay.2017.12.047 ER -
@article{ author = "Tomić, Miloš and Dunjić, Branko and Nikolić, Marija S. and Maletaškić, Jelena and Pavlović, Vladimir B. and Bajat, Jelena B. and Đonlagić, Jasna A.", year = "2018", abstract = "The major aims of this paper are the investigation of the effects of the mixing procedure and the montmorillonite (Mt) surface modification on the structure (optical microscopy, XRD, TEM, SEM), rheological, mechanical properties (DMA, tensile test) and corrosion stability (electrochemical impedance spectroscopy) of clay mineral/epoxy nanocomposite (CPN). Two series of CPN samples were prepared based on diglycidyl ether of bisphenol A (DGEBA) and polyamidoamine curing agent with three organophilic Mt and sodium-montmorillonite (1 wt%). Mt were mixed with DGEBA solution in the powder (direct mixing) and in the form of dispersions, preswollen in a commercial coating thinner (solution intercalation). The commercial Mt (Cloisite 30B) modified by quaternary alkylammonium ions bearing hydroxyl groups and especially Mt functionalized by primary (HDA(+)-Mt) alkylammonium ions, at loadings close to cation exchange capacity (CRC), were significantly swollen by thinner and further uniformly dispersed into CPN. Meanwhile, low gel volumes in thinner were found for more hydrophobic Mt (Cloisite 15A). The compatibility of Mt with solvents was well described by solubility and Flory-Huggins interaction parameters. In contrast to the direct incorporation of Mt powders in CPN, swelling enhanced intercalation of epoxy matrix into Mt, and for HDA(+)-Mt based CPN interlayer spacing reached 4.4 nm. The usage of HDA(+)-Mt organoclay and solution intercalation procedure provided the highest enhancement in rheological parameters (G, G, of Mt/epoxy dispersions and glassy storage modulus, Youngs modulus and barrier properties of cured CPN.", journal = "Applied Clay Science", title = "Dispersion efficiency of montmorillonites in epoxy nanocomposites using solution intercalation and direct mixing methods", volume = "154", pages = "52-63", doi = "10.1016/j.clay.2017.12.047" }
Tomić, M., Dunjić, B., Nikolić, M. S., Maletaškić, J., Pavlović, V. B., Bajat, J. B.,& Đonlagić, J. A.. (2018). Dispersion efficiency of montmorillonites in epoxy nanocomposites using solution intercalation and direct mixing methods. in Applied Clay Science, 154, 52-63. https://doi.org/10.1016/j.clay.2017.12.047
Tomić M, Dunjić B, Nikolić MS, Maletaškić J, Pavlović VB, Bajat JB, Đonlagić JA. Dispersion efficiency of montmorillonites in epoxy nanocomposites using solution intercalation and direct mixing methods. in Applied Clay Science. 2018;154:52-63. doi:10.1016/j.clay.2017.12.047 .
Tomić, Miloš, Dunjić, Branko, Nikolić, Marija S., Maletaškić, Jelena, Pavlović, Vladimir B., Bajat, Jelena B., Đonlagić, Jasna A., "Dispersion efficiency of montmorillonites in epoxy nanocomposites using solution intercalation and direct mixing methods" in Applied Clay Science, 154 (2018):52-63, https://doi.org/10.1016/j.clay.2017.12.047 . .