Effects of silica nanoparticles on the rheological properties and morphologies of polyvinyl alcohol/silver nanowire suspensions

2021 ◽  
Vol 33 (4) ◽  
pp. 321-331
Author(s):  
Seung Hak Lee ◽  
Si Yoon Kim ◽  
Reza Salehiyan ◽  
Kyu Hyun
Keyword(s):  
Polyvinyl Alcohol ◽  
Silica Nanoparticles ◽  
Rheological Properties ◽  
Silver Nanowire

scholarly journals Morphological influence of cellulose nanoparticles (CNs) from cottonseed hulls on rheological properties of polyvinyl alcohol/CN suspensions

2016 ◽  
Vol 153 ◽  
pp. 445-454 ◽  
Author(s):  
Ling Zhou ◽  
Hui He ◽  
Mei-Chun Li ◽  
Kunlin Song ◽  
H.N. Cheng ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Rheological Properties ◽  
Cellulose Nanoparticles

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.

Study of Rheological Properties of Polyvinyl Alcohol Aqueous Solution by Flow Birefringence

1969 ◽  
Vol 8 (2) ◽  
pp. 283-284 ◽  
Author(s):  
Noboru Nakatani ◽  
Tomoharu Yamada ◽  
Yoshio Soezima
Keyword(s):  
Aqueous Solution ◽  
Polyvinyl Alcohol ◽  
Rheological Properties ◽  
Flow Birefringence

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.

Ionenes based on polyvinyl alcohol and the rheological properties of their solutions

1991 ◽  
Vol 33 (11) ◽  
pp. 2189-2194
Author(s):  
V.V. Ryabenko ◽  
D.O. Timoshenko ◽  
A.N. Dudka ◽  
I.A. Uskov
Keyword(s):  
Polyvinyl Alcohol ◽  
Rheological Properties

scholarly journals Studying the Rheological Properties of Non-Newtonian Fluids Under the Addition of Different Chemical Additives

2020 ◽  
Vol 23 (1) ◽  
pp. 68-80
Author(s):  
Douaa Hussein Ali ◽  
Muhannad A.R. Mohammed
Keyword(s):  
Sodium Chloride ◽  
Polyvinyl Alcohol ◽  
Rheological Properties ◽  
Apparent Viscosity ◽  
Xanthan Gum ◽  
Methyl Cellulose ◽  
Carboxy Methyl Cellulose ◽  
Chemical Additives ◽  
Low Viscosity ◽  
Carboxy Methyl

This research study the rheological properties ( plastic viscosity, yield point and apparent viscosity) of non-Newtonian fluids under the addition of different chemical additives with different concentrations, such as (xanthan gum (xc-polymer) , carboxy methyl cellulose ( high and low viscosity ) ,polyacrylamide, polyvinyl alcohol, starch, quebracho, chrome lignosulfonate, and sodium chloride (NaCl). Fann viscometer model 800 with 8-speeds was used to measure the rheological properties of these samples, that have already been prepared. All samples were subjected to Bingham plastic model. It was concluded that the plastic viscosity, yield point and apparent viscosity should be increased with increasing the concentrations of (xanthan gum (xc-polymer) , carboxy methyl cellulose ( high and low viscosity ) ,polyacrylamide, polyvinyl alcohol, starch and sodium chloride (NaCl), while the opposite is true for quebracho, chrome lignosulfonate.

Sign in / Sign up

Export Citation Format

Share Document