Calcite Surfaces Modified with Carboxylic Acids (C 2 to C 18 ): Layer Organization, Wettability, Stability, and Molecular Structural Properties
Само за регистроване кориснике
2023
Аутори
Wojas, Natalia A.Tyrode, Eric
Corkery, Robert
Ernstsson, Marie
Wallqvist, Viveca
Järn, Mikael
Swerin, Agne
Schoelkopf, Joachim
Gane, Patrick A.C.
Claesson, Per M.
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
A fundamental understanding of the interactions between mineral surfaces and amphiphilic surface modification agents is needed for better control over the production and uses of mineral fillers. Here, we controlled the carboxylic acid layer formation conditions on calcite surfaces with high precision via vapor deposition. The properties of the resulting carboxylic acid layers were analyzed using surface-sensitive techniques, such as atomic force microscopy (AFM), contact angle measurements, angle resolved X-ray photoelectron spectroscopy (XPS), and vibrational sum-frequency spectroscopy. A low wettability was achieved with long hydrocarbon chain carboxylic acids such as stearic acid. The stearic acid layer formed by vapor deposition is initially patchy, but with increasing vapor exposure time, the patches grow and condense into a homogeneous layer with a thickness close to that expected for a monolayer as evaluated by AFM and XPS. The build-up process of the layer occurs more rapidly a...t higher temperatures due to the higher vapor pressure. The stability of the deposited fatty acid layer in the presence of a water droplet increases with the chain length and packing density in the adsorbed layer. Vibrational sum frequency spectroscopy data demonstrate that the stearic acid monolayers on calcite have their alkyl chains in an all-trans conformation and are anisotropically distributed on the plane of the surface, forming epitaxial monolayers. Vibrational spectra also show that the stearic acid molecules interact with the calcite surface through the carboxylic acid headgroup in both its protonated and deprotonated forms. The results presented provide new molecular insights into the properties of adsorbed carboxylic acid layers on calcite.
Извор:
Langmuir : the ACS journal of surfaces and colloids, 2023, 39, 42, 14840-14852Издавач:
- American Chemical Society (ACS)
Финансирање / пројекти:
- Omya International AG
- Swedish Research Council (VR)
DOI: 10.1021/acs.langmuir.3c01252
ISSN: 0743-7463
PubMed: 37824837
Scopus: 2-s2.0-85175357225
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Wojas, Natalia A. AU - Tyrode, Eric AU - Corkery, Robert AU - Ernstsson, Marie AU - Wallqvist, Viveca AU - Järn, Mikael AU - Swerin, Agne AU - Schoelkopf, Joachim AU - Gane, Patrick A.C. AU - Claesson, Per M. PY - 2023 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6808 AB - A fundamental understanding of the interactions between mineral surfaces and amphiphilic surface modification agents is needed for better control over the production and uses of mineral fillers. Here, we controlled the carboxylic acid layer formation conditions on calcite surfaces with high precision via vapor deposition. The properties of the resulting carboxylic acid layers were analyzed using surface-sensitive techniques, such as atomic force microscopy (AFM), contact angle measurements, angle resolved X-ray photoelectron spectroscopy (XPS), and vibrational sum-frequency spectroscopy. A low wettability was achieved with long hydrocarbon chain carboxylic acids such as stearic acid. The stearic acid layer formed by vapor deposition is initially patchy, but with increasing vapor exposure time, the patches grow and condense into a homogeneous layer with a thickness close to that expected for a monolayer as evaluated by AFM and XPS. The build-up process of the layer occurs more rapidly at higher temperatures due to the higher vapor pressure. The stability of the deposited fatty acid layer in the presence of a water droplet increases with the chain length and packing density in the adsorbed layer. Vibrational sum frequency spectroscopy data demonstrate that the stearic acid monolayers on calcite have their alkyl chains in an all-trans conformation and are anisotropically distributed on the plane of the surface, forming epitaxial monolayers. Vibrational spectra also show that the stearic acid molecules interact with the calcite surface through the carboxylic acid headgroup in both its protonated and deprotonated forms. The results presented provide new molecular insights into the properties of adsorbed carboxylic acid layers on calcite. PB - American Chemical Society (ACS) T2 - Langmuir : the ACS journal of surfaces and colloids T1 - Calcite Surfaces Modified with Carboxylic Acids (C 2 to C 18 ): Layer Organization, Wettability, Stability, and Molecular Structural Properties EP - 14852 IS - 42 SP - 14840 VL - 39 DO - 10.1021/acs.langmuir.3c01252 ER -
@article{ author = "Wojas, Natalia A. and Tyrode, Eric and Corkery, Robert and Ernstsson, Marie and Wallqvist, Viveca and Järn, Mikael and Swerin, Agne and Schoelkopf, Joachim and Gane, Patrick A.C. and Claesson, Per M.", year = "2023", abstract = "A fundamental understanding of the interactions between mineral surfaces and amphiphilic surface modification agents is needed for better control over the production and uses of mineral fillers. Here, we controlled the carboxylic acid layer formation conditions on calcite surfaces with high precision via vapor deposition. The properties of the resulting carboxylic acid layers were analyzed using surface-sensitive techniques, such as atomic force microscopy (AFM), contact angle measurements, angle resolved X-ray photoelectron spectroscopy (XPS), and vibrational sum-frequency spectroscopy. A low wettability was achieved with long hydrocarbon chain carboxylic acids such as stearic acid. The stearic acid layer formed by vapor deposition is initially patchy, but with increasing vapor exposure time, the patches grow and condense into a homogeneous layer with a thickness close to that expected for a monolayer as evaluated by AFM and XPS. The build-up process of the layer occurs more rapidly at higher temperatures due to the higher vapor pressure. The stability of the deposited fatty acid layer in the presence of a water droplet increases with the chain length and packing density in the adsorbed layer. Vibrational sum frequency spectroscopy data demonstrate that the stearic acid monolayers on calcite have their alkyl chains in an all-trans conformation and are anisotropically distributed on the plane of the surface, forming epitaxial monolayers. Vibrational spectra also show that the stearic acid molecules interact with the calcite surface through the carboxylic acid headgroup in both its protonated and deprotonated forms. The results presented provide new molecular insights into the properties of adsorbed carboxylic acid layers on calcite.", publisher = "American Chemical Society (ACS)", journal = "Langmuir : the ACS journal of surfaces and colloids", title = "Calcite Surfaces Modified with Carboxylic Acids (C 2 to C 18 ): Layer Organization, Wettability, Stability, and Molecular Structural Properties", pages = "14852-14840", number = "42", volume = "39", doi = "10.1021/acs.langmuir.3c01252" }
Wojas, N. A., Tyrode, E., Corkery, R., Ernstsson, M., Wallqvist, V., Järn, M., Swerin, A., Schoelkopf, J., Gane, P. A.C.,& Claesson, P. M.. (2023). Calcite Surfaces Modified with Carboxylic Acids (C 2 to C 18 ): Layer Organization, Wettability, Stability, and Molecular Structural Properties. in Langmuir : the ACS journal of surfaces and colloids American Chemical Society (ACS)., 39(42), 14840-14852. https://doi.org/10.1021/acs.langmuir.3c01252
Wojas NA, Tyrode E, Corkery R, Ernstsson M, Wallqvist V, Järn M, Swerin A, Schoelkopf J, Gane PA, Claesson PM. Calcite Surfaces Modified with Carboxylic Acids (C 2 to C 18 ): Layer Organization, Wettability, Stability, and Molecular Structural Properties. in Langmuir : the ACS journal of surfaces and colloids. 2023;39(42):14840-14852. doi:10.1021/acs.langmuir.3c01252 .
Wojas, Natalia A., Tyrode, Eric, Corkery, Robert, Ernstsson, Marie, Wallqvist, Viveca, Järn, Mikael, Swerin, Agne, Schoelkopf, Joachim, Gane, Patrick A.C., Claesson, Per M., "Calcite Surfaces Modified with Carboxylic Acids (C 2 to C 18 ): Layer Organization, Wettability, Stability, and Molecular Structural Properties" in Langmuir : the ACS journal of surfaces and colloids, 39, no. 42 (2023):14840-14852, https://doi.org/10.1021/acs.langmuir.3c01252 . .