Experimental and theoretical investigation on Nano-fluid surface tension

Ranjbar, Hemat; Khosravi‐Nikou, Mohammad Reza; Safiri, Amir; Bovard, Samaneh; Khazaei, Ali

doi:10.1016/j.jngse.2015.11.010

Cited by 29 publications

(7 citation statements)

References 35 publications

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“…This result was compatible with the results observed by Vafaei et al. [36] and Ranjbar et al [39], which indicated that the surface tension of bismuth telluride (Bi2Te3), Tri Ethylene Glycol-Al2O3 and -MgO nanofluid diminished to a minimum magnitude and then increased again with the loading of more NPs. They adjudged that this type of behavior in surface tension to be an outcome of charged NPs assembly and accumulation at the liquid-gas interface.…”

Section: Surface Tensionsupporting

confidence: 93%

Physicochemical and rheo-mechanical properties of titanium dioxide reinforced sage seed gum nanohybrid hydrogel

Oleyaei

Razavi

Mikkonen

2018

International Journal of Biological Macromolecules

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Sage seed gum (SSG) is a promising biopolymer candidate for utilization and substitution prevalent galactomannan gels of interest in soft biomaterial applications. Herein, physicochemical and rheo-mechanical properties of SSG matrix reinforced by various titanium dioxide (TiO) nanoparticles loading (0-25wt%) were monitored. Particle size and density of the nanocomposite increased with raising TiO content, due to the creation of more compact agglomerated and aggregated microstructure. Increasing the particle size resulted in lower electrophoretic mobility of SSG-TiO systems upon nanoparticles addition, confirmed the adsorption of TiO on the SSG macromolecule. Mechanical spectra of the SSG-based nanocomposites demonstrated a more solid-like behavior by lower frequency-dependent viscoelastic moduli, suggested a structural decoration of the nanohybrid gels discussed in terms of polymer bridging effect and formation of percolated matrix-particle superstructure. Crucial textural parameters improved with increasing TiO until a critical level (15 wt%), after which further increments in filler resulted in a reduction of hardness, adhesiveness and apparent modulus of elasticity. Deformation of rod-like junction zones acting as physical crosslinks in the system and fracture theory were used to explain the strain-stiffening and adhesive behavior of SSG-based gels, respectively. The nanocomposite gels with tunable functional properties might be ideal candidates for biomaterial industry.

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Section: Surface Tensionsupporting

confidence: 93%

Physicochemical and rheo-mechanical properties of titanium dioxide reinforced sage seed gum nanohybrid hydrogel

Oleyaei

Razavi

Mikkonen

2018

International Journal of Biological Macromolecules

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“…). This result was consistent with the findings ofRanjbar, Khosravi-Nikou, Safiri, Bovard, & Khazaei (2015) for Tri Ethylene Glycol-Al2O3 and -MgO nanofluids; and with the observation ofTanvir & Qiao (2012) for n-decane and ethanol-based solutions. It should be noted, that the surface tension of SSG-Laponite system illustrated an irregular increment trend at nanoparticle contents above 10 wt.%.…”

supporting

confidence: 92%

Novel nanobiocomposite hydrogels based on sage seed gum-laponite: Physico-chemical and rheological characterization

Oleyaei

Razavi

Mikkonen

2018

Carbohydrate Polymers

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In this study, the physico-chemical and rheo-mechanical properties of sage seed gum hydrogel, reinforced by various ratios (0-25 wt.%) of Laponite, were investigated. Particles size measurements indicated the formation of large SSG-Laponite microstructures upon nanoparticle adding, due to the interactions generated between the anionic SSG and the charged surfaces of clay platelets. Laponite affected the surface tension and density of the SSG-based systems significantly, but only influenced the ζ-potential above 20 wt.%. The dynamic rheological behavior of SSG-based nanocomposites reflected the reinforcing effect of secondary structures and percolated three-dimensional network, suggested a structural modification of the hydrogels with the Laponite loading. An improvement in texture profile analysis parameters was observed in Laponite content ≤5 wt.%, whereas for nanoparticles >5 wt.%, a significant decrease was obtained. In conclusion, Laponite improved the rheological and physico-chemical properties of SSG-based hydrogel and extended its potential as promising future bio-products for industrial applications.

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“…These inorganic fillers includes aluminum oxide and titanium dioxide and basic substances like potassium silanolate, potassium hydroxide, and trialkyl amine . Furthermore, a study was carried out to show the effect of MgO and γ-Al 2 O 3 nanoparticles on the surface tension of a TEG-based nanofluid . It was found that the increase of particle concentration initially decreases the surface tension.…”

Section: Antifoams In Acid Gas Sweeteningmentioning

confidence: 99%

“…84 Furthermore, a study was carried out to show the effect of MgO and γ-Al 2 O 3 nanoparticles on the surface tension of a TEG-based nanofluid. 85 It was found that the increase of particle concentration initially decreases the surface tension. However, the trend was reversed and the surface tension increased at 2 wt % of MgO and 1 wt % γ-Al 2 O 3 .…”

Section: Antifoams In Acid Gas Sweeteningmentioning

confidence: 99%

Selection Criteria for Antifoams Used in the Acid Gas Sweetening Process

Lau

Partoon

et al. 2021

Ind. Eng. Chem. Res.

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Antifoam plays an essential role in maintaining the continuous removal of acid gases by the absorption process. However, a holistic review of the fundamentals and desirable selection criteria for different types of antifoams for the gas sweetening process is scarcely available. Therefore, this review analyses the selection criteria of each type of antifoam for acid gas sweetening, particularly silicone, polyether glycol, alcohol, and blended-based antifoams. These selection criteria are crucial in defining the properties and antifoaming performance in terms of solubility, dispersibility, surface tension, viscosity, defoaming rate, thermal stability, stability of defoaming performance, potential hazard, and chemical inertness. Hence, this review provides valuable insight into the existing and potential antifoams that could be employed in the acid gas sweetening process along with their distinctive antifoaming ability, benefits, and drawbacks. From this review, blended antifoam is able to fulfill most of the selection criteria and will be further explored in a subsequent study.

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Experimental and theoretical investigation on Nano-fluid surface tension

Cited by 29 publications

References 35 publications

Physicochemical and rheo-mechanical properties of titanium dioxide reinforced sage seed gum nanohybrid hydrogel

Physicochemical and rheo-mechanical properties of titanium dioxide reinforced sage seed gum nanohybrid hydrogel

Novel nanobiocomposite hydrogels based on sage seed gum-laponite: Physico-chemical and rheological characterization

Selection Criteria for Antifoams Used in the Acid Gas Sweetening Process

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