Effects of Bentonite Nanoclay and Cetyltrimethyl Ammonium Bromide Modified Bentonite Nanoclay on Phase Inversion of Water-in-Oil Emulsions

Ogunlaja, Sileola B.; Pal, Rajinder

doi:10.3390/colloids4010002

Cited by 9 publications

(3 citation statements)

References 19 publications

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“…Figure 4b shows the surface morphology of bentonite containing MMT which has layered pores that are evenly distributed and no further clumping occurs, this is due to the addition of CTAB surfactant. This study is in line with that carried out by (Ogunlaja & Pal, 2020), who reported that nano bentonite modified with CTAB surfactants could reduce particle agglomeration in the MMT structure.…”

Section: Scanning Electron Microscopy (Sem) Analysis Of Nanobentonite...supporting

confidence: 93%

Modification and Characterization of Polyamide Nanocomposites with Organobentonite Cetyltrimethylammonium Bromide

Aritonang,

Ritonga,

Harefa

2023

AJNS

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Modification of bentonite with Cetyl Trimethyl Ammonium Bromide (CTAB) has been successfully carried out, resulting in the application of organobentonite as a filler. The purpose of this study was to determine the characteristics of the polyamide nanocomposite material before and after the addition of organobentonite filler. Commercial bentonite after being modified with CTAB is organophilic with a particle size of 9.55 nm. The results of the Fourier Transform Infra Red spectrum analysis show that there is a wide and sharp absorption band at wave number 3749.6 cm-1 which indicates the presence of Al-OH groups. The results of Scanning Electron Microscopy analysis of the surface morphology of the polyamide/organobentonite nanocomposite obtained a homogeneous and compatible mixture. The conclusion from the CTAB research results can unite polyamide and bentonite which have different polarities

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Section: Scanning Electron Microscopy (Sem) Analysis Of Nanobentonite...supporting

confidence: 93%

Modification and Characterization of Polyamide Nanocomposites with Organobentonite Cetyltrimethylammonium Bromide

Aritonang,

Ritonga,

Harefa

2023

AJNS

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“…Table 3 demonstrates that Peak 1 is centered at H = 10.4 nm with the smallest standard deviation (±2.7 nm) and 28% of the intensity of size distribution, being evidence of nanoparticles in the C20A nanoclay used in this work: Peak 2 is centered at H = 361.7 nm with the highest intensity (28.6%) and the highest standard deviation (±28.6 nm). There are several other studies with H like Peak 2, highlighting the H of the organo‐modified MMT nanoclay (between 300 and 400 nm), 63 bentonite nanoclay modified with ammonium bromide (between 100 and 700 nm), 64 and for Cloisite® 30A nanoclay (~300 nm) 51 …”

Section: Resultsmentioning

confidence: 98%

Two different routes to prepare porous biodegradable composite membranes containing nanoclay

Zanini,

Ferreira,

Barbosa

et al. 2023

J of Applied Polymer Sci

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The method employed for membrane preparation and nanoparticle incorporation in membrane systems can affect their properties. This work aims to compare the better strategy to obtain membranes from the preparation of PBAT [Poly(butylene adipate co‐terephthalate)] containing nanoclay Cloisite® 20A (C20A) (0, 0.5, and 1 wt.%) by combined Evaporation/Non‐solvent Induced Phase Separation (EIPS/NIPS) or dip coating methods. The SEM, TGA, contact angle measurements, FTIR, XRD, mechanical testing, and cost analysis characterized EIPS/NIPS to dip coating membranes. EIPS/NIPS membranes had smaller pores (0.3–0.5 μm), with a more homogeneous pore diameter distribution due to C20A nanoclay insertion. PBAT/0.5% C20AEIPS/NIPS was the more hydrophilic membrane (37°) with better mechanical properties proven by statistical analysis. The cost analysis showed that EIPS/NIPS membranes production cost per square meter (m2) was lower (US$ 73.4–73.8) than dip coating (US$ 89.0–99.2). The EIPS/NIPS method was the most economically and statistically advantageous, and its properties can favor future applications for PTEs removal in aqueous media.

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“…Thus far, various methods have been utilized to make the hydrophobicity of bentonite, such as cetyltrimethylammonium bromide (CTAB), polymers (for example, polyethylene), octadecyl dimethyl phenylmethyl ammonium chloride (ODPAC), silanes, and stearic acid (SA) (Hong et al, 2020;Huang et al, 2015;Johansson and Clegg, 2014;Ogunlaja and Pal, 2020;Saki et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of hydrophobic bentonite effects on reducing evaporation from water surfaces

Jajin

Feizi

Ghorbanpour

2022

Journal of Hydrology and Hydromechanics

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In recent years, due to the occurrence of water shortage and drought problems, particularly in arid and semi-arid regions of the world, new methods to reduce evaporation from the surface of dam reservoirs, lakes, and other water-free surfaces are investigated. This study aimed to use hydrophobic bentonite to reduce water evaporation from water surfaces, on a laboratory scale, and field conditions for the first time. Bentonite initially became hydrophobic by stearic acid (SA). Under such conditions, hydrophobic bentonite floats on the surface of water and forms a thin coating layer. The produced hydrophobic bentonite had a contact angle of 150°, indicating its superhydrophobicity. Evaporation reduction was measured under laboratory and field conditions and it was compared to hexadecanol as the reference material. The results demonstrated that the hydrophobic bentonite efficiency under laboratory conditions was similar to that of hexadecanol and prevented water evaporation by 36%. However, under field conditions, hydrophobic bentonite and hexadecanol efficiencies were 40% and 23% to reduce evaporation for 30 days, respectively. In terms of stability, hexadecanol needed to be re-injected after three days, while hydrophobic bentonite was stable and remained on the surface for more than 100 days under laboratory conditions and for more than 15 days under field conditions without needing re-injection. This coverage with method can be used to reduce evaporation from lakes, tanks, and reservoirs of small dams.

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Effects of Bentonite Nanoclay and Cetyltrimethyl Ammonium Bromide Modified Bentonite Nanoclay on Phase Inversion of Water-in-Oil Emulsions

Cited by 9 publications

References 19 publications

Modification and Characterization of Polyamide Nanocomposites with Organobentonite Cetyltrimethylammonium Bromide

Modification and Characterization of Polyamide Nanocomposites with Organobentonite Cetyltrimethylammonium Bromide

Two different routes to prepare porous biodegradable composite membranes containing nanoclay

Experimental investigation of hydrophobic bentonite effects on reducing evaporation from water surfaces

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