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Artículos de revistas sobre el tema "Water-clay interaction"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 1 de febrero de 2022

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1

El-Sheikhy, Refat, and Mosleh Al-Shamrani. "Fast Laboratory Test for Mechanism of Natural Nanoclay-Water Interaction." Advanced Materials Research 214 (February 2011): 426–29. http://dx.doi.org/10.4028/www.scientific.net/amr.214.426.

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The relation between nanoclay and water effects is very complicated. Interactions of water and nano size type of silicate –aluminum is more complicated due to the special properties of nano material. A new simple technique is developed for studying the swelling phenomenon which represents the most important property of clay-water relation. The developed technique could find more aspects of water-clay behavior. The swelling property is not always only disadvantage with bad effects but sometimes has very important advantages. A comparison and differences with conventional clay-water are made. Th
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2

Sobolev, O., F. Favre Buivin, E. Kemner, et al. "Water–clay surface interaction: A neutron scattering study." Chemical Physics 374, no. 1-3 (2010): 55–61. http://dx.doi.org/10.1016/j.chemphys.2010.06.012.

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3

Iwata, S., F. Izumi, and A. Tsukamoto. "Differential heat of water adsorption for montmorillonite, kaolinite and allophane." Clay Minerals 24, no. 3 (1989): 505–12. http://dx.doi.org/10.1180/claymin.1989.024.3.04.

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AbstractDifferential heat of water vapour adsorption for Cs+-saturated montmorillonite, kaolinite and allophane was measured over a low relative humidity range from 10−4 to 10−1. Two interactions (clay surface atom-water and counterion-water) are mainly involved in the water vapour adsorption process. To assess the affinity of water to the clay surface, the amounts of adsorbed water and the differential heat due to Cs+ were estimated from equilibrium constants in the gas phase reactions. It is tentatively concluded that (i) a dominant role of water adsorption due to the Cs+-water interaction i
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4

Yang, Yu, Sanjeev Adhikari, and Guoyuan Xu. "Molecular Dynamics Simulation in the Interlayer of Mixed-Layer Clays Due to Hydration and Swelling Mechanism." Crystals 11, no. 6 (2021): 586. http://dx.doi.org/10.3390/cryst11060586.

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The swelling behavior of clay minerals is widely known for its importance in soil and environmental sciences and its detrimental effects in engineering fields. Although more than 70 percent of all clays are of mixed-layer types, the vast majority of the previous experiments and simulations are focused on pure clays, which cause the swelling mechanism of the widespread mixed-layer clay (MLC) and its role in soils are little understood, especially the most common illite-montmorillonite (I-M) mixed-layer clay (MLC). This paper reports on a molecular dynamics (MD) study of the differences in swell
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5

Sun, He-mei, Wei Yang, Ren-peng Chen, and Xin Kang. "A coarse-grained water model for mesoscale simulation of clay-water interaction." Journal of Molecular Liquids 318 (November 2020): 114085. http://dx.doi.org/10.1016/j.molliq.2020.114085.

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6

Lin, Yuan, Huaitao Qin, Jin Guo, and Jiawang Chen. "Study on the Rheological Behavior of a Model Clay Sediment." Journal of Marine Science and Engineering 9, no. 1 (2021): 81. http://dx.doi.org/10.3390/jmse9010081.

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Clay sediments are the main component of seabed sediment. Interactions between the nano-sized, disk-shaped and charged clay particles are complicated, as they control the sediment’s rheology. In this study, we studied the rheological behavior of the clay sediment modeled by laponite and bentonite suspensions experimentally using a rotational rheometer. The yield stress decreased when water content increased. Meanwhile, the yield stress of the laponite suspension first increased and then decreased with increasing salinity. It is considered that the face-to-face repulsive electrostatic interacti
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7

Díaz-Pérez, A., I. Cortés-Monroy, and J. C. Roegiers. "The role of water/clay interaction in the shale characterization." Journal of Petroleum Science and Engineering 58, no. 1-2 (2007): 83–98. http://dx.doi.org/10.1016/j.petrol.2006.11.011.

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8

Sun, Y., H. Lin, and P. F. Low. "The nonspecific interaction of water with the surfaces of clay minerals." Journal of Colloid and Interface Science 112, no. 2 (1986): 556–64. http://dx.doi.org/10.1016/0021-9797(86)90126-8.

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9

Katti, Dinesh R., Lakshmikanth Srinivasamurthy, and Kalpana S. Katti. "Molecular modeling of initiation of interlayer swelling in Na–montmorillonite expansive clay." Canadian Geotechnical Journal 52, no. 9 (2015): 1385–95. http://dx.doi.org/10.1139/cgj-2014-0309.

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Expansive soils are found in many parts of the world. A major constituent of these clays is the mineral montmorillonite. Molecular interactions between clay, cations, and water play an important role in swelling. Molecular models of Na–montmorillonite clay are constructed, and solvation studies are conducted using molecular dynamics. Analysis of molecular trajectories, conformations, and interaction energies reveal key mechanisms that initiate interlayer swelling. In the initially dry interlayer, the interlayer collapses due to strong attractive interactions between Na ions and clay sheets. Th
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10

Primanti, Ima Sandra, and Oteng Haridjaja. "Phonska Fertilizer Leaching and Its Effect on Spinach Growth and Productivity (Amaranthus tricolor. L) on Latosol with Different Clay Content." Jurnal Ilmu Tanah dan Lingkungan 7, no. 1 (2005): 22–26. http://dx.doi.org/10.29244/jitl.7.1.22-26.

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Sufficient available water in soil is very essential for plant growth, not only as a nutrient solvent but also to maintainoptimal turgor pressure. Occasionally, additional water supply from irrigation is necessary to achieve optimal soil water,:ondition. The aim of this research was to study leaching of several nutrients correlated to the growth and productivity ofspinach. PHONSKA fertilizer as a source of nutrients was applied to Latosols Darmaga having different clay content. Thetreatments were subjected to different level of water supply resulting in different soil moisture regime. Factoria
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11

Leite, Raquel Santos, Renalle Cristina Alves de Medeiros Nascimento, and Luciana Viana Amorim. "Study of the Interaction between Particles of Bentonite: Use of Dispersant Additives." Materials Science Forum 798-799 (June 2014): 659–64. http://dx.doi.org/10.4028/www.scientific.net/msf.798-799.659.

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This study has evaluated the influence of dispersant additives on the interaction of sodium bentonite clay in aqueous dispersion. Measurements of apparent viscosity (AV) and plastic viscosity (PV) for the dispersions, before and after additive, were done in a Fann 35A viscometer at ambient temperature and after thermal ageing (366K during 57600 seconds in Fann Roller Oven). The dispersions were prepared with clay contents of 0.04 and 0.08 kg/10-3m3 of water and the dispersants (sodium polyacrylate and sodium polyphosphate) with 0.02 and 0.04 kg/10-3m3 of water. Was observed that the dispersion
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12

Stucki, J. W., K. Lee, L. Zhang, and R. A. Larson. "Effects of iron oxidation states on the surface and structural properties of smectites." Pure and Applied Chemistry 74, no. 11 (2002): 2145–58. http://dx.doi.org/10.1351/pac200274112145.

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The oxidation state of iron (Fe) in the crystal structure of smectite clay minerals profoundly alters their physical-chemical properties. Among the properties affected are layer charge, cation exchange and fixation capacity, swelling in water, particle size, specific surface area, layer stacking order, magnetic exchange interactions, octahedral site occupancy, surface acidity, and reduction potential. Also affected is the surface chemistry of the clay, which alters clay–water and clay–organic interaction mechanisms. Rates and extents of degradation of pesticides are increased in the presence o
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13

Keren, Rami, and Meni Ben-Hur. "Interaction effects of clay swelling and dispersion and CaCO3 content on saturated hydraulic conductivity." Soil Research 41, no. 5 (2003): 979. http://dx.doi.org/10.1071/sr02102.

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Typic Chromoxeret-sand and Lithic Ruptic Xerochrept-sand mixtures, of high sodicity, and containing 8 and ~0% CaCO3, respectively, were packed in columns and leached with electrolyte solutions. When a reference solution of 500 mmol/L was replaced successively with solutions containing 100, 50, 10, 5, and 1 mmol/L and then with deionised water (gradual leaching), the saturated hydraulic conductivity (Ks) decreased gradually to steady-state values, and no clay was observed in the leachate. Under deionised leaching, the relative Ks (Ks/Ks0) (the ratio between the observed Ks and that under leachi
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14

Behrends, Thilo, Iris van der Veen, Alwina Hoving, and Jasper Griffioen. "First assessment of the pore water composition of Rupel Clay in the Netherlands and the characterisation of its reactive solids." Netherlands Journal of Geosciences 95, no. 3 (2016): 315–35. http://dx.doi.org/10.1017/njg.2016.23.

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AbstractThe Rupel Clay member in the Netherlands largely corresponds to the Boom Formation in Belgium, and this marine, clay-rich deposit is a potential candidate to host radioactive waste disposal facilities. Prediction of the speciation of radionuclides in Rupel Clay pore water and their retardation by interactions with Rupel Clay components requires knowledge about the composition of Rupel Clay pore water, the inventory of reactive solids and understanding of interactions between Rupel Clay and pore water. Here, we studied Rupel Clay material which was obtained from cores collected in the p
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15

Chatterjee, A., T. Iwasaki, T. Ebina, and A. Miyamoto. "A DFT study on clay–cation–water interaction in montmorillonite and beidellite." Computational Materials Science 14, no. 1-4 (1999): 119–24. http://dx.doi.org/10.1016/s0927-0256(98)00083-4.

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16

He, Manchao, Xiaoming Sun, and Jian Zhao. "Advances in interaction mechanism of water (gas) on clay minerals in China." International Journal of Mining Science and Technology 24, no. 6 (2014): 727–35. http://dx.doi.org/10.1016/j.ijmst.2014.10.009.

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17

Wang, Bo, and Yongjun Peng. "The interaction of clay minerals and saline water in coarse coal flotation." Fuel 134 (October 2014): 326–32. http://dx.doi.org/10.1016/j.fuel.2014.05.085.

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18

Gillott, J. E. "Some clay-related problems in engineering geology in North America." Clay Minerals 21, no. 3 (1986): 261–78. http://dx.doi.org/10.1180/claymin.1986.021.3.02.

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AbstractClay minerals are almost ubiquitous in soil and rock and are among the most reactive silicates. They affect the engineering behaviour of soil and rock both as materials of construction and as foundation materials. In the petroleum industry, clay affects the permeability of reservoir formations, it is a common cap-rock, and it is also a constituent of the fluids used in drilling operations. Engineering behaviour almost always involves clay-water interaction and in turn this depends on the nature of water and solutions and on the composition and microstructure of the clay. The importance
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19

Wang, Yan, Jakob Wohlert, Lars A. Berglund, Yaoquan Tu, and Hans Ågren. "Molecular dynamics simulation of strong interaction mechanisms at wet interfaces in clay–polysaccharide nanocomposites." J. Mater. Chem. A 2, no. 25 (2014): 9541–47. http://dx.doi.org/10.1039/c4ta01459f.

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20

Yong, Raymond N., and Sudhakar M. Rao. "Mechanistic evaluation of mitigation of petroleum hydrocarbon contamination by soil medium." Canadian Geotechnical Journal 28, no. 1 (1991): 84–91. http://dx.doi.org/10.1139/t91-009.

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Present in situ chemical treatment technologies for mitigation of petroleum hydrocarbon contamination are in the developmental stage or being tested. To devise efficient strategies for restricting the movement of petroleum hydrocarbon (PHC) molecules in the contaminated soil, it is proposed to utilize the sorption–interaction relationships between the petroleum contaminants and the soil substrate. The basic questions addressed in this paper are as follows (i) What are the prominent chemical constituents of the various petroleum fractions that interact with the soil substrate? (ii) What are the
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21

Slavutsky, Aníbal Marcelo, María Alejandra Bertuzzi, and Margarita Armada. "Water barrier properties of starch-clay nanocomposite films." Brazilian Journal of Food Technology 15, no. 3 (2012): 208–18. http://dx.doi.org/10.1590/s1981-67232012005000014.

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The functional properties of corn starch based films were improved by incorporating nanoclay (Montmorillonite). Nanoclay was incorporated in the polymer matrix using two different methodologies and the films were formed by casting. The effect of film preparation methodology and of the nanoclay concentration on the physicochemical properties of the films was studied. Depending on film preparation method used, intercalated or exfoliated nanocomposite films were obtained. The FTIR spectra showed a strong interaction between the montmorillonite and the starch molecules. Opacity was dependent on th
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22

Swai, Rogers Evarist. "A review of molecular dynamics simulations in the designing of effective shale inhibitors: application for drilling with water-based drilling fluids." Journal of Petroleum Exploration and Production Technology 10, no. 8 (2020): 3515–32. http://dx.doi.org/10.1007/s13202-020-01003-2.

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Abstract When drilling for oil and gas, maintaining wellbore stability is of primary importance to reduce non-productive time and trouble cost. Shale swelling causes many problems related to stability when drilling with water-based drilling fluids (WBDF). For many years, it remains the number one cause of time wastage and well abandonment. Different shale samples have different chemical compositions that affect their behavior when in contact with water. This factor makes laboratory-based analysis and characterization of the swelling mechanisms and action of swelling inhibitors extremely challe
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23

Paramitha, Tika, Vita Wonoputri, Daniel Steven D Sitompul, Hyung Woo Lee, and Johnner P Sitompul. "Properties of clays reinforced PLA nanocomposites by melt extrusion technique." Malaysian Journal of Fundamental and Applied Sciences 16, no. 4 (2020): 453–57. http://dx.doi.org/10.11113/mjfas.v16n4.1534.

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Nanocomposites were prepared by melt extrusion technique using single screw extruder and subsequent hot compression. In this work, poly lactic acid-clay nanocomposites were obtained using two types of clays, namely commercial montmorillonite (Cloisite 30B) and commercial bentonite. Nanocomposites were prepared at low clay composition of 0.5, 1, 3, and 5 wt.% of clays. From XRD spectra, the partially exfoliation of nanoclay layers were occurred during melting extrusion. It resulted in improvement of mechanical properties, such as Young’s modulus, tensile strength, and elongation at break. The h
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24

Liu, Sheng Chuan, Gui Ling Ding, and Gang Chen. "Long-Term Performance Study of High Moisture Content Cohesive Soil Subgrade in Seasonal Frozen Region." Applied Mechanics and Materials 405-408 (September 2013): 49–56. http://dx.doi.org/10.4028/www.scientific.net/amm.405-408.49.

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This project is aiming at the high water content clay in seasonally frozen ground region, based on the expressway program in Heilongjiang province. By applying laboratory test, field test, field monitoring and theoretical analysis, research has been proposed to understand the deformation law and long-term performance of high water content clay subgrade in freeze-thaw condition. From the comparison test of soil and soil treated with lime, road properties of high water content clay has been found out. It is a very necessary and effective method using lime to treat the high water content clay in
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25

Undabeytia, Tomas, Uri Shuali, Shlomo Nir, and Baruch Rubin. "Applications of Chemically Modified Clay Minerals and Clays to Water Purification and Slow Release Formulations of Herbicides." Minerals 11, no. 1 (2020): 9. http://dx.doi.org/10.3390/min11010009.

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This review deals with modification of montmorillonite and other clay-minerals and clays by interacting them with organic cations, for producing slow release formulations of herbicides, and efficient removal of pollutants from water by filtration. Elaboration is on incorporating initially the organic cations in micelles and liposomes, then producing complexes denoted micelle- or liposome-clay nano-particles. The material characteristics (XRD, Freeze-fracture electron microscopy, adsorption) of the micelle– or liposome–clay complexes are different from those of a complex of the same composition
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26

Houri, Boumadiane, Ahmed Legrouri, Allal Barroug, Claude Forano, and Jean-Pierre Besse. "Use of the Ion-Exchange Properties of Layered Double Hydroxides for Water Purification." Collection of Czechoslovak Chemical Communications 63, no. 5 (1998): 732–40. http://dx.doi.org/10.1135/cccc19980732.

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The sorption of chromate and dichromate ions by a [Zn-Al-Cl] layered double hydroxide was investigated. The anionic clay, prepared by coprecipitation at pH 8, was found to be pure upon characterization by X-ray diffraction, Fourier-transform infrared spectroscopy, and thermogravimetry and to have low BET surface area and small pore volume. The interaction of the clay with both chromate and dichromate ions has been studied by UV-VIS spectroscopy. The treatment of water containing 15-300 ppm of CrO42- or Cr2O72- was successful. The sorption capacities of the clay for CrO42- and Cr2O72- are close
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27

Escobedo, David, Patricia Patrier, Daniel Beaufort, et al. "Contribution of the Paragenetic Sequence of Clay Minerals to Re-Examination of the Alteration Zoning in the Krafla Geothermal System." Minerals 11, no. 9 (2021): 935. http://dx.doi.org/10.3390/min11090935.

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This paper revisits the clay mineralogy of the “smectite” alteration zone in the Krafla geo-thermal field via the study of an exploratory well in which temperatures range from 40 °C to 215 °C. The clay alteration consists of several mineral assemblages superimposed in time and space, resulting from different stages of water-rock interaction. Trioctahedral clay minerals (chlorite, corrensite and smectite) are observed throughout the studied section. These minerals can form in nearly closed systems as replacements of groundmass minerals/glass after interactions with resident and nearly stagnant
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28

Charpentier, D., R. Mosser-Ruck, M. Cathelineau, and D. Guillaume. "Oxidation of mudstone in a tunnel (Tournemire, France): consequences for the mineralogy and crystal chemistry of clay minerals." Clay Minerals 39, no. 2 (2004): 135–49. http://dx.doi.org/10.1180/0009855043920126.

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AbstractThe excavation of a tunnel through a mudstone formation provides an opportunity to examine the effects of the modification of the physical and chemical environment on the rock. The mineralogical and chemical consequences of hydration-dehydration cycles and of oxidation have been evaluated in the case of the Toarcian mudstone formation at the Tournemire experimental site (France). Studies by X-ray diffraction and tansmission electron microscopy of both altered and preserved samples show that the introduction of air and condensed water causes the oxidation of pyrite and the subsequent ge
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29

Boudissa, Farida, Meriem Zekkari, Vasilica-Alisa Arus, et al. "Clay-catalyzed ozonation of endocrine-disrupting compounds in solvent-free media – to better understand soil catalytic capacity." Dalton Transactions 49, no. 46 (2020): 16693–706. http://dx.doi.org/10.1039/d0dt02776f.

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An original approach never followed so far allowed correlating the basicity and hydrophilic character of clay catalysts with surface interaction with 17α-Ethinylestradiol (EE2) during ozonation in water.
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30

Zhong, Hanyi, Dong Sun, Weian Huang, Yunfeng Liu, and Zhengsong Qiu. "Effect of Cycloaliphatic Amine on the Shale Inhibitive Properties of Water-Based Drilling Fluid." Open Fuels & Energy Science Journal 8, no. 1 (2015): 19–27. http://dx.doi.org/10.2174/1876973x01508010019.

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In order to improve the inhibitive properties and high temperature resistance of shale inhibitor, cycloaliphatic amines were introduced as shale hydration inhibitors in water-based drilling fluids. Bulk hardness test, shale cuttings dispersion test, bentonite inhibition test and water adsorption test were carried out to characterize the inhibitive properties of the novel amines. Surface tension measurement, zeta potential measurement, XRD, contact angle test, SEM and TGA were performed to investigate the interaction between the cycloaliphatic amines and clay particles. The results indicated th
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31

Lu, Cheng, Xuwen Qin, Lu Yu, et al. "The Characteristics of Gas-Water Two-Phase Radial Flow in Clay-Silt Sediment and Effects on Hydrate Production." Geofluids 2021 (May 11, 2021): 1–14. http://dx.doi.org/10.1155/2021/6623802.

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Many hydrate-bearing sediments in the Shenhu area of the South China Sea are featured with unconsolidated clayed silt, small particle size, and high content of clay, which can pose a great challenge for gas production. In order to investigate the gas-water relative permeability in clay-silt sediments, through a radial flow experiment, samples from the target sediment in the Shenhu area were selected and studied. The results show that the irreducible water saturation is high and the influence of the gas-water interaction is obvious. The relative permeability analysis shows that the two-phase fl
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32

Sun, Jian Cheng, Zi Jia, and Cheng Zhi Xiao. "Pullout Tests Study on Performance of Interface between Geogrid and Soil." Advanced Materials Research 446-449 (January 2012): 1661–65. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.1661.

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The interface interaction between geogrid and soil is one of key issues on stability of geosynthetic-reinforced soil structures. Comparative analysis of properties of geogrid-clay interface under the different kinds of geogrid, different normal stresses, speeds of pullout and water contents of clay are conducted by medium-sized pullout tests. The tests results showed that ultimate pullout force of geogrid, interfacial cohesion and frictional coefficient are significantly affected by various water contents of clay. Ultimate pullout forces of geogrid tending to remarkably difference when subject
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33

Barbosa, Renata, Tatianny Soares Alves, Celso Hartmann Júnior, and Gabriel Neiva Cadah. "Evaluation of Attapulgite Clay Content from Piauí in Sorption Characterization of Water in the Polyester Matrix Composites." Materials Science Forum 775-776 (January 2014): 471–75. http://dx.doi.org/10.4028/www.scientific.net/msf.775-776.471.

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The physico-chemical characteristics of attapulgite clay confer appropriate properties to their different industrial uses, such as: Drilling fluid, bleaching of vegetable oils, mineral and animal grease and oil absorbents, pet waste absorbents (pet litter), purification of drinking water etc. The aim of this study was the chemical modification of attapulgite originally from state of Piauí, for applications in polyester-based composites. The unmodified and modified clay were characterized by X-ray diffraction (XRD). In order to evaluate the interaction of clays with organic solvents, the test
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34

Shen, Xinyi, and Ian C. Bourg. "Molecular dynamics simulations of the colloidal interaction between smectite clay nanoparticles in liquid water." Journal of Colloid and Interface Science 584 (February 2021): 610–21. http://dx.doi.org/10.1016/j.jcis.2020.10.029.

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35

Weiss, Charles A., and Walter V. Gerasimowicz. "Interaction of water with clay minerals as studied by 2H nuclear magnetic resonance spectroscopy." Geochimica et Cosmochimica Acta 60, no. 2 (1996): 265–75. http://dx.doi.org/10.1016/0016-7037(95)00396-7.

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36

Shi, He, Guan Cheng Jiang, Kai Wang, and Xin Liang Li. "Synthesis of a Dendrimer as Rheological Modifier for Deep-Water Drilling Fluids and Study of its Interaction with Organo-Clay at Different Temperatures." Key Engineering Materials 792 (December 2018): 111–18. http://dx.doi.org/10.4028/www.scientific.net/kem.792.111.

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As the influence of large temperature range during deep-water drilling on rheological properties of water-in-oil emulsified drilling fluids, a dendrimer synthesized from a dodecyl dibasic acid and triethylenetetramine was introduced as a rheological modifier to get a flat-rheology. The product was characterized by infrared spectroscopy and its interaction with organo-clay was studied with sedimentation experiment, optical microscope, X-ray diffraction (XRD), Transmission electron microscopy (TEM), and rheological test. The results showed that the dendrimer can improve the dispersion of organo-
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37

Shu, Xiaobo, Liping Wan, and Mubai Duan. "Persistent inhibition performance of amine polymers to inhibit clay swelling." Journal of Polymer Engineering 38, no. 4 (2018): 323–31. http://dx.doi.org/10.1515/polyeng-2016-0428.

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AbstractClay hydration and swelling can cause shale instability in the drilling of oil and gas wells. The persistent inhibition performance of polyether amine (PEA) and poly(vinyl alcohol-g-dimethyl aminopropyl methacrylamide) (PVA-g-DMAPMA) as amine clay inhibitors has been investigated through hot rolling dispersion test, bulk hardness test, and bentonite inhibition test. The micro-mechanism has also been explained by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), scanning electron microscope (SEM), and X-ray diffraction (XRD) analyses. Through the interact
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38

Skipper, N. T. "Computer simulation of aqueous pore fluids in 2:1 clay minerals." Mineralogical Magazine 62, no. 5 (1998): 657–67. http://dx.doi.org/10.1180/002646198548043.

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AbstractMonte Carlo and molecular dynamics computer simulations are now able to provide detailed information concerning the structure, dynamics, and thermodynamics of pore fluids in 2:1 clays. This article will discuss interparticle interaction potentials currently available for atomistic simulations of clay-water systems, and will describe how computational techniques can be applied to modelling of clay systems. Some recent simulation studies of 2:1 clay hydration will then be reviewed. Comparison with experimental data promotes confidence in the molecular models and simulation techniques, an
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39

Li, Yu Feng, Xiao Hui Gao, Hong Lei Zhu, and Liu Yang. "Water-Based Polyaniline/Montmorillonite/Epoxy Composite Coatings for the Corrosion Protection of Mild Steel." Advanced Materials Research 79-82 (August 2009): 1067–70. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.1067.

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Polystyrene sulfonic acid (PSSA) doped water-dispersible polyaniline (PANI) /montmorillonite (MMT) clay composites were firstly synthesized by intercalation polymerisation in aqueous medium and characterized by XRD and FT-IR. The results showed exfoliated silicate nanolayers of MMT clay dispersed in the PANI matrix and has interaction involving hydrogen bonding between the PSSA-PANI chain and the surface of the MMT clay layer. This composites is more thermal stable than that of without clay samples and results in good stable temperature-dependent dc conductivity [σdc(T)] as temperature changed
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40

Sohrabi, M., P. Mahzari, S. A. Farzaneh, J. R. Mills, P. Tsolis, and S. Ireland. "Novel Insights Into Mechanisms of Oil Recovery by Use of Low-Salinity-Water Injection." SPE Journal 22, no. 02 (2016): 407–16. http://dx.doi.org/10.2118/172778-pa.

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Summary The underlying mechanism of oil recovery by low-salinity-water injection (LSWI) is still unknown. It would, therefore, be difficult to predict the performance of reservoirs under LSWI. A number of mechanisms have been proposed in the literature, but these are controversial and have largely ignored crucial fluid/fluid interactions. Our direct-flow-visualization investigations (Emadi and Sohrabi 2013) have revealed that a physical phenomenon takes place when certain crude oils are contacted by low-salinity water, leading to a spontaneous formation of micelles that can be seen in the form
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41

Fulignati, Paolo. "Clay Minerals in Hydrothermal Systems." Minerals 10, no. 10 (2020): 919. http://dx.doi.org/10.3390/min10100919.

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The study of active and fossil hydrothermal systems shows clay minerals to be a fundamental tool for the identification and characterization of hydrothermal alteration facies. The occurrence and composition of hydrothermal alteration facies could provide useful information on the physicochemical conditions of the hydrothermal activity affecting a rock volume. In particular, clay minerals (i.e., smectite group, chlorite, illite, kaoline group, pyrophyllite, biotite) are pivotal for extrapolating important parameters that strongly affect the development of water/rock interaction processes such a
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42

Navea, Juan G., Haihan Chen, Min Huang, Gregory R. Carmichel, and Vicki H. Grassian. "A comparative evaluation of water uptake on several mineral dust sources." Environmental Chemistry 7, no. 2 (2010): 162. http://dx.doi.org/10.1071/en09122.

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Environmental context. Dust particles produced from wind blown soils are of global significance as these dust particles not only impact visibility, as evident in the recent 2009 Australian dust storm, but also atmospheric chemistry, climate and biogeochemical cycles. The amount of water vapour in the atmosphere (relative humidity) can play a role in these global processes yet there are few studies and little quantitative data on water-dust particle interactions. The focus of this research is on quantifying water-dust particle interactions for several dust sources including Asia and Africa wher
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43

Azeh, Yakubu, Yohanna Bello Paiko, Stephen Chinenyeze Agwuncha, et al. "Polymer Composite Film Based on Polyethylene and Organoclay." Asian Journal of Materials Chemistry 4, no. 1-2 (2019): 7–13. http://dx.doi.org/10.14233/ajmc.2019.ajmc-p72.

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Clay is an inorganic material with hydrophilic surface which cannot interact well with hydrophobic polymer as a reinforcement filler phase. However, surface modification allows useful applications as fillers in composite fabrication with most hydrophobic polymers. To achieve this, native clay was activated by mineral acids, modified through acetylation using commercial vinegar to convert the hydrophilic clay surface to hydrophobic one, capable of interaction with polyethylene. The formulated composite films were biodegraded after one month of test experiment carried out at different locations.
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44

Chang, Ilhan, Yeong-Man Kwon, Jooyoung Im, and Gye-Chun Cho. "Soil consistency and interparticle characteristics of xanthan gum biopolymer–containing soils with pore-fluid variation." Canadian Geotechnical Journal 56, no. 8 (2019): 1206–13. http://dx.doi.org/10.1139/cgj-2018-0254.

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Biopolymer–soil technology is currently recognized as an environmentally friendly soil improvement method for geotechnical engineering practices. However, concerns exist regarding biopolymer fine-soil applications because the performance of biopolymers is based on an electrical interaction with clay or a pore fluid. Thus, the effect of water content and pore-fluid chemistry on biopolymer behavior in soil must first be clarified in terms of biopolymer applications. In this study, the liquid limits of xanthan gum biopolymer–treated clay–sand mixtures (clayey silt, kaolinite, montmorillonite, and
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45

Gautier, M., F. Muller, J. M. Beny, L. Le Forestier, P. Alberic, and P. Baillif. "Interactions of ammonium smectite with low-molecular-weight carboxylic acids." Clay Minerals 44, no. 2 (2009): 207–19. http://dx.doi.org/10.1180/claymin.2009.044.2.207.

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AbstractThe percolation of water through waste landfill sites produces leachates with large amounts of pollutants. Clay barriers are often used to limit soil and underground water pollution. A better understanding of the interaction between ammonium smectite and carboxylic acids would contribute significantly to our understanding of such systems. The SWy-2 (Wyoming smectite) was exchanged with NH4+ and then batched with carboxylic acids (acetic, formic, chloroacetic and oxalic) in concentrations between 0.01 M and 1 M. The solid phases obtained were analysed chemically and characterized by inf
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46

Hama, K., K. Bateman, P. Coombs, et al. "Influence of bacteria on rock-water interaction and clay mineral formation in subsurface granitic environments." Clay Minerals 36, no. 4 (2001): 599–613. http://dx.doi.org/10.1180/0009855013640012.

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AbstractStudies of the subsurface microbiology of the Äspö Hard Rock Laboratory, Sweden have revealed the presence of many different bacteria in the deep groundwaters which appear to maintain reducing conditions. Experiments were conducted to study the rock-water and microbial interactions. These used crushed Äspö diorite, Äspö groundwater and iron- and sulphate-reducing bacteria in flowing systems under anaerobic conditions. In column experiments, there was evidence of loss and mobilization of fine-grained crushed material (<5 μm) which had originally adhered to grain surfaces in the start
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47

Martins, David M. S., Marco Molinari, Mário A. Gonçalves, José P. Mirão, and Stephen C. Parker. "Toward Modeling Clay Mineral Nanoparticles: The Edge Surfaces of Pyrophyllite and Their Interaction with Water." Journal of Physical Chemistry C 118, no. 47 (2014): 27308–17. http://dx.doi.org/10.1021/jp5070853.

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48

Delevoye, L., J. L. Robert, and J. Grandjean. "23Na 2D 3QMAS NMR and 29Si, 27Al MAS NMR investigation of Laponite and synthetic saponites of variable interlayer charge." Clay Minerals 38, no. 1 (2003): 63–69. http://dx.doi.org/10.1180/0009855033810079.

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Abstract29Si, 27Al MAS NMR is used to characterize Laponite RD and synthetic saponites of variable interlayer charge. The Si/Al ratios are in good agreement with the calculated charge from chemical analysis except for the lowest-charged saponite. In contrast to the 29Si MAS NMR spectra in which resolved signals are detected, the 27Al MAS NMR spectra show one signal whose linewidth increases with the clay charge. The water content of the clay samples was obtained from 1H MAS NMR.The 2D MQMAS NMR technique is required to obtain a high-resolution spectrum of nuclei with strong quadrupolar interac
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49

Abd El-Fattah, Ahmed, and Eman Abd ElKader. "Influence of different clays on the mechanical, thermal, and water absorption properties of recycled high-density polyethylene/wood flour hybrid composites." Journal of Composite Materials 52, no. 9 (2017): 1215–26. http://dx.doi.org/10.1177/0021998317723180.

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Wood plastic composites based on recycled high-density polyethylene (r-HDPE)/wood flour with the addition of organically modified clays were prepared by melt mixing and compression molding. The effect of two different types and contents of clays, bentonite and layered double hydroxide – on the mechanical, thermal, and water absorption properties of the wood plastic composites – was examined to identify the most effective clay type for wood plastic composites. It was found that incorporation of 2 wt% modified bentonite (mBNT) clay was the most effective in the composite formulation; it has sign
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50

Takahashi, Tadahito, and Michihiro Yamaguchi. "Host-guest interaction between swelling clay minerals and poorly water-soluble drugs. 1: Complex formation between a swelling clay mineral and griseofulvin." Journal of Inclusion Phenomena and Molecular Recognition in Chemistry 10, no. 2 (1991): 283–97. http://dx.doi.org/10.1007/bf01066211.

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