The effect of silica nanoparticles on polysulfone–polyethylene glycol (PSF/PEG) composite membrane on gas separation and rheological properties of nanocomposites

2020 ◽  
Author(s):  
Iman Salahshoori ◽  
Danial Nasirian ◽  
Niloufar Rashidi ◽  
Md Kamal Hossain ◽  
Ali Hatami ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Silica Nanoparticles ◽  
Rheological Properties ◽  
Gas Separation ◽  
Composite Membrane

Gamma Irradiation of Cellulose Acetate-Polyethylene Glycol 400 Composite Membrane and Its Performance Test for Gas Separation

2021 ◽  
Vol 12 (6) ◽  
pp. 1198
Author(s):  
Arifina Febriasari ◽  
Meri Suhartini ◽  
Ade L. Yunus ◽  
Rahmawati Rahmawati ◽  
Sudirman Sudirman ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Gamma Irradiation ◽  
Cellulose Acetate ◽  
Gas Separation ◽  
Composite Membrane ◽  
Performance Test ◽  
Polyethylene Glycol 400

Short fiber/polyurethane composite membrane for gas separation

2017 ◽  
Vol 543 ◽  
pp. 40-48 ◽  
Author(s):  
Mohammad Bagher Karimi ◽  
Shadi Hassanajili
Keyword(s):  
Gas Separation ◽  
Composite Membrane ◽  
Short Fiber ◽  
Polyurethane Composite

scholarly journals Evaluating the potential of surface-modified silica nanoparticles using internal olefin sulfonate for enhanced oil recovery

2019 ◽  
Vol 17 (3) ◽  
pp. 722-733 ◽  
Author(s):  
Afaque Ahmed ◽  
Ismail Mohd Saaid ◽  
Abdelazim Abbas Ahmed ◽  
Rashidah M. Pilus ◽  
Mirza Khurram Baig
Keyword(s):  
Silica Nanoparticles ◽  
Rheological Properties ◽  
Oil Recovery ◽  
Displacement Efficiency ◽  
Shear Rates ◽  
Oil Water ◽  
Core Flood ◽  
The Stability ◽  
Modified Silica Nanoparticles ◽  
Surface Modified

AbstractRecently, nanoparticles have proven to enhance oil recovery on the core-flood scale in challenging high-pressure high-temperature reservoirs. Nanomaterials generally appear to improve oil production through wettability alteration and reduction in interfacial tension between oil and water phases. Besides, they are environmentally friendly and cost-effective enhanced oil recovery techniques. Studying the rheological properties of nanoparticles is critical for field applications. The instability of nanoparticle dispersion due to aggregation is considered as an unfavorable phenomenon in nanofluid flooding while conducting an EOR process. In this study, wettability behavior and rheological properties of surface-treated silica nanoparticles using internal olefins sulfonates (IOS20–24 and IOS19–23), anionic surfactants were investigated. Surface modification effect on the stability of the colloidal solution in porous media and oil recovery was inspected. The rheology of pure and surface-treated silica nanoparticles was investigated using a HPHT rheometer. Morphology and particle size distributions of pure and coated silica nanoparticles were studied using a field emission scanning electron microscope. A series of core-flood runs was conducted to evaluate the oil recovery factor. The coated silica nanoparticles were found to alter rheological properties and exhibited a shear-thinning behavior as the stability of the coated silica nanoparticles could be improved considerably. At low shear rates, the viscosity slightly increases, and the opposite happens at higher shear rates. Furthermore, the surface-modified silica nanoparticles were found to alter the wettability of the aqueous phase into strongly water-wet by changing the contact angle from 80° to 3° measured against glass slides representing sandstone rocks. Oil–water IFT results showed that the surface treatment by surfactant lowered the oil–water IFT by 30%. Also, the viscosity of brine increased from 0.001 to 0.008 Pa s by introducing SiO2 nanoparticles to the aqueous phase for better displacement efficiency during chemical-assisted EOR. The core-flood experiments revealed that the ultimate oil recovery is increased by approximately 13% with a surfactant-coated silica nanofluid flood after the conventional waterflooding that proves the potential of smart nanofluids for enhancing oil recovery. The experimental results imply that the use of surfactant-coated nanoparticles in tertiary oil recovery could facilitate the displacement efficiency, alter the wettability toward more water-wet and avoid viscous fingering for stable flood front and additional oil recovery.

Investigation of stability and rheological properties of silver nanoparticles stabilized by polyethylene glycol

2020 ◽  
Vol 31 (13) ◽  
pp. 10470-10477
Author(s):  
Saleem Ullah ◽  
Musa Kaleem Baloch ◽  
Mohsan Nawaz ◽  
Zia Ur Rehman ◽  
Wajid Rehman ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Polyethylene Glycol ◽  
Rheological Properties

Interfacial engineering of metal–organic frameworks/graphene oxide composite membrane by polyethyleneimine for efficient H2/CH4 gas separation

2019 ◽  
Vol 6 (8) ◽  
pp. 2043-2049 ◽  
Author(s):  
Di Liu ◽  
Guangsheng Pang ◽  
Zhiyong Tang ◽  
Shouhua Feng
Keyword(s):  
Graphene Oxide ◽  
Gas Separation ◽  
Composite Membrane ◽  
Metal Organic Frameworks ◽  
Oxide Composite ◽  
Interfacial Engineering ◽  
Highly Efficient ◽  
Metal Organic

Interfacial engineering has demonstrated a significant effect on fabricating highly efficient membranes for gas separation.

Tuning the structure, thermal stability and rheological properties of liquid crystal phases via the addition of silica nanoparticles

2019 ◽  
Vol 21 (46) ◽  
pp. 25649-25657 ◽  
Author(s):  
Joshua B. Marlow ◽  
Thomas M. McCoy ◽  
Cat Q. Ho ◽  
Liliana de Campo ◽  
Robert Knott ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Liquid Crystal ◽  
Light Microscopy ◽  
Surface Chemistry ◽  
Silica Nanoparticles ◽  
Rheological Properties ◽  
Small Angle ◽  
Angle Scattering ◽  
Liquid Crystal System ◽  
Crystal Phases

The effects of adding silica nanoparticles of varying size and surface chemistry to a liquid crystal system were analysed using small-angle scattering and polarising light microscopy, with varying temperature and applied shear.

Microscopic Dynamics of Polyethylene Glycol Chains Interacting with Silica Nanoparticles

2013 ◽  
Vol 110 (17) ◽  
Author(s):  
T. Glomann ◽  
G. J. Schneider ◽  
J. Allgaier ◽  
A. Radulescu ◽  
W. Lohstroh ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Silica Nanoparticles ◽  
Microscopic Dynamics
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