The influence of alumino-silicate matrix composition on surface hydrophobic properties
Authors
Kljajević, Ljiljana M.Melichova, Zuzana
Kisić, Danilo
Nenadović, Miloš
Todorović, Bratislav Ž.
Pavlović, Vladimir B.
Nenadović, Snežana S.
Article (Published version)
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The purpose of this investigation is to investigate the hydrophobicity of geopolymers, new alumino-silicate materials and the influence of Si/Al ratio on their surface properties. Contact angle measurement (CAM) as reliable indicator of hydrophobicity was determined for synthesized geopolymers using water and ethylene-glycol as reference liquids. Geopolymers were synthesized from various precursors: Kaolin, bentonite and diatomite. Characterization of phase structure and microstructure was performed by XRD, FTIR, SEM/EDX methods. Contact angle measurements confirmed that the geopolymers synthesized from metakaolin are the most porous, which can be explained by the smallest Si/Al ratio. The maximum value of contact angle and free surface energy (110.2 mJ/m2) has been achieved for geopolymer synthesized by diatoms (GPMD). SEM micrograph of GPMD shows a homogeneous surface with some longitudinal cavities in the gel and is significantly different from the micrographs of other two geopolyme...r samples, GPMB and GPMK. © 2018 Authors.
Keywords:
Metakaolin / Metadiatomite / Metabentonit / Geopolymer / Contact angleSource:
Science of Sintering, 2019, 51, 2, 163-173Funding / projects:
- Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45012)
- Functional, Functionalized and Advanced Nanomaterials (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45005)
- Slovak Grant Agency VEGA [1/0538/15]
- "Restoration and construction of infrastructure for ecological and environmental research at Matej Bel University in Banska Bystrica" [ITMS 262101200245]
DOI: 10.2298/SOS1902163K
ISSN: 0350-820X
WoS: 000496249200004
Scopus: 2-s2.0-85070248132
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VinčaTY - JOUR AU - Kljajević, Ljiljana M. AU - Melichova, Zuzana AU - Kisić, Danilo AU - Nenadović, Miloš AU - Todorović, Bratislav Ž. AU - Pavlović, Vladimir B. AU - Nenadović, Snežana S. PY - 2019 UR - https://vinar.vin.bg.ac.rs/handle/123456789/8440 AB - The purpose of this investigation is to investigate the hydrophobicity of geopolymers, new alumino-silicate materials and the influence of Si/Al ratio on their surface properties. Contact angle measurement (CAM) as reliable indicator of hydrophobicity was determined for synthesized geopolymers using water and ethylene-glycol as reference liquids. Geopolymers were synthesized from various precursors: Kaolin, bentonite and diatomite. Characterization of phase structure and microstructure was performed by XRD, FTIR, SEM/EDX methods. Contact angle measurements confirmed that the geopolymers synthesized from metakaolin are the most porous, which can be explained by the smallest Si/Al ratio. The maximum value of contact angle and free surface energy (110.2 mJ/m2) has been achieved for geopolymer synthesized by diatoms (GPMD). SEM micrograph of GPMD shows a homogeneous surface with some longitudinal cavities in the gel and is significantly different from the micrographs of other two geopolymer samples, GPMB and GPMK. © 2018 Authors. T2 - Science of Sintering T1 - The influence of alumino-silicate matrix composition on surface hydrophobic properties VL - 51 IS - 2 SP - 163 EP - 173 DO - 10.2298/SOS1902163K ER -
@article{ author = "Kljajević, Ljiljana M. and Melichova, Zuzana and Kisić, Danilo and Nenadović, Miloš and Todorović, Bratislav Ž. and Pavlović, Vladimir B. and Nenadović, Snežana S.", year = "2019", abstract = "The purpose of this investigation is to investigate the hydrophobicity of geopolymers, new alumino-silicate materials and the influence of Si/Al ratio on their surface properties. Contact angle measurement (CAM) as reliable indicator of hydrophobicity was determined for synthesized geopolymers using water and ethylene-glycol as reference liquids. Geopolymers were synthesized from various precursors: Kaolin, bentonite and diatomite. Characterization of phase structure and microstructure was performed by XRD, FTIR, SEM/EDX methods. Contact angle measurements confirmed that the geopolymers synthesized from metakaolin are the most porous, which can be explained by the smallest Si/Al ratio. The maximum value of contact angle and free surface energy (110.2 mJ/m2) has been achieved for geopolymer synthesized by diatoms (GPMD). SEM micrograph of GPMD shows a homogeneous surface with some longitudinal cavities in the gel and is significantly different from the micrographs of other two geopolymer samples, GPMB and GPMK. © 2018 Authors.", journal = "Science of Sintering", title = "The influence of alumino-silicate matrix composition on surface hydrophobic properties", volume = "51", number = "2", pages = "163-173", doi = "10.2298/SOS1902163K" }
Kljajević, L. M., Melichova, Z., Kisić, D., Nenadović, M., Todorović, B. Ž., Pavlović, V. B.,& Nenadović, S. S.. (2019). The influence of alumino-silicate matrix composition on surface hydrophobic properties. in Science of Sintering, 51(2), 163-173. https://doi.org/10.2298/SOS1902163K
Kljajević LM, Melichova Z, Kisić D, Nenadović M, Todorović BŽ, Pavlović VB, Nenadović SS. The influence of alumino-silicate matrix composition on surface hydrophobic properties. in Science of Sintering. 2019;51(2):163-173. doi:10.2298/SOS1902163K .
Kljajević, Ljiljana M., Melichova, Zuzana, Kisić, Danilo, Nenadović, Miloš, Todorović, Bratislav Ž., Pavlović, Vladimir B., Nenadović, Snežana S., "The influence of alumino-silicate matrix composition on surface hydrophobic properties" in Science of Sintering, 51, no. 2 (2019):163-173, https://doi.org/10.2298/SOS1902163K . .