Rheological properties of three different microstructures of water-soluble polymers prepared by solution polymerization

2010 ◽  
Vol 67 (2) ◽  
pp. 251-262 ◽  
Author(s):  
Valeria J. González Coronel ◽  
Enrique J. Jiménez-Regalado
Keyword(s):  
Rheological Properties ◽  
Water Soluble ◽  
Solution Polymerization ◽  
Water Soluble Polymers ◽  
Soluble Polymers

Improving Gas Bubbles’ Half Life in Foam Drilling Fluid

2013 ◽  
Vol 62 (1) ◽  
Author(s):  
Issham Ismail ◽  
Nur Suriani Mamat ◽  
Baihaqi Mamat ◽  
Ahmad Shamsulizwan Ismail ◽  
Azmi Kamis ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Xanthan Gum ◽  
Drilling Fluid ◽  
Water Soluble ◽  
Polymer Foam ◽  
Water Soluble Polymers ◽  
Stable Foam ◽  
Soluble Polymers ◽  
The Stability ◽  
Foam Drilling

An underbalanced drilling using foam drilling fluid is one of the most effective solutions which are capable of preventing formation damage, differential sticking, or circulation lost. Nevertheless, the limitation of using foam drilling fluid is the stability of its rheological properties which would affect its lubricity characteristics. Therefore, a research study was carried out to determine the stability and effectiveness of water soluble polymers as an additive in foam drilling fluid. To produce the required and most stable foam, four types of surfactants had been tested, namely sodium dodecyl sulfate (anionic), cetyltrimethylammonium bromide (cationic), T×100 (non ionic), and n-alkyl betaines (amphoteric). Then, the water soluble polymers, namely xanthan gum, hydroxyethyl cellulose, guar gum, and carboxymethyl cellulose, were evaluated as a stabilizer in the said foam drilling fluid. The laboratory works involved lubricity and rheological properties tests, which were conducted at ambient condition. The experimental results showed that the use of xanthan gum with anionic surfactant produced the most stable foam drilling fluid compared to other polymers. Rheological properties of the polymer foam drilling fluid were compared with water-based mud, and it was revealed that polymer foam drilling fluid could perform as effective as the latter. The significant advantage of using polymer foam drilling fluid was its coefficient of friction which was found to be lower than the water-based mud. 

Influence of Viscosity-Modifying Admixtures on the Thixotropic Behaviour of Cement Pastes

2008 ◽  
Vol 18 (4) ◽  
pp. 45604-1-45604-8 ◽  
Author(s):  
R. Bouras ◽  
M. Chaouche ◽  
S. Kaci
Keyword(s):  
Rheological Properties ◽  
Cement Paste ◽  
Water Soluble ◽  
Mix Design ◽  
Scale Level ◽  
Cement Pastes ◽  
Water Soluble Polymers ◽  
Soluble Polymers ◽  
Thixotropic Behaviour ◽  
The Stability

Abstract Water soluble polymers such as cellulosic or starch ethers are often included in the mix-design of Self Compacting Concretes (SCCs) in order to improve their stability and robustness. The stability, including resistance to liquid-solid separation and sedimentation, may be attributed to the increase of the viscosity of the liquid phase due to the thickening effect of the polymer. The later is then referred to as a Viscosity-Modifying Admixture (VMA). In the present study, we consider the influence of VMAs on the rheological properties of the material at cement scale level. In particular, the change in the thixotropic properties of the cement paste due to the inclusion of VMA is investigated. It is found that addition of VMA significantly enhances rebuild-up kinetics at rest following shearing at high shear rate. The influence of VMA on the steady state rheological properties is also considered. As reported in the literature, the yield stress is found to monotonically increase with VMA content, while the consistency presents a minimum indicating the existence of an optimum value of the VMA for which the workability of the cement paste is maximum.

To the Question of the Cement-Polymer Composite Materials’ Rheological Properties

2019 ◽  
Vol 974 ◽  
pp. 156-161 ◽  
Author(s):  
N.N. Onoprienko
Keyword(s):  
Mechanical Properties ◽  
Aqueous Solution ◽  
Composite Materials ◽  
Rheological Properties ◽  
Correlation Coefficient ◽  
Water Soluble ◽  
Rheological Parameters ◽  
Water Soluble Polymers ◽  
Soluble Polymers ◽  
Bonding Material

The domestic and foreign production polymers effects studies’ results on the cement-polymer test rheological indicators are analyzed, taking into account the composition of the functional groups of water-soluble polymers and the viscosity of their one-percent aqueous solution. The rheological studies’ results of the Yunis Granit bonding material for fixing the large-format slabs of natural stone and porcelain are presented. The Ostwald, Bingham and Barkley-Herschel equations are considered to describe the flow of pseudoplastic, viscoelastic and rheological complex bodies and their disadvantages. The formula for calculating the rheological parameters: the flowability and the dilution coefficient of nonlinear visco-plastic bodies is proposed and verified. It is shown that the proposed formula describes the structural-mechanical properties of nonlinear visco-plastic systems with a high correlation coefficient.

New quenching media based on water-soluble polymers

1981 ◽  
Vol 23 (2) ◽  
pp. 104-106 ◽  
Author(s):  
A. V. Tolstousov ◽  
O. A. Bannykh
Keyword(s):  
Water Soluble ◽  
Water Soluble Polymers ◽  
Soluble Polymers ◽  
Quenching Media

scholarly journals SANS quantification of bound water in water-soluble polymers across multiple concentration regimes

Soft Matter ◽  
2021 ◽  
Author(s):  
Helen Yao ◽  
Bradley D. Olsen
Keyword(s):  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Bound Water ◽  
Water Soluble ◽  
Wide Concentration Range ◽  
Water Molecules ◽  
Water Soluble Polymers ◽  
Soluble Polymers

Small-angle neutron scattering is used to measure the number of bound water molecules associating with three polymers over a wide concentration range. Different fitting workflows are evaluated and recommended depending on the concentration regime.

Water-soluble polymers and gels from the polycondensation between cyclodextrins and poly(carboxylic acid)s: A study of the preparation parameters

2005 ◽  
Vol 97 (2) ◽  
pp. 433-442 ◽  
Author(s):  
B. Martel ◽  
D. Ruffin ◽  
M. Weltrowski ◽  
Y. Lekchiri ◽  
M. Morcellet
Keyword(s):  
Carboxylic Acid ◽  
Water Soluble ◽  
Water Soluble Polymers ◽  
Soluble Polymers

scholarly journals Flow Enhancement of Water-Soluble Polymers through Porous Media by Preshearing

2021 ◽  
Author(s):  
Mohsen Mirzaie Yegane ◽  
Julia Schmidt ◽  
Fatima Dugonjic-Bilic ◽  
Benjamin Gerlach ◽  
Pouyan E. Boukany ◽  
...  
Keyword(s):  
Porous Media ◽  
Water Soluble ◽  
Water Soluble Polymers ◽  
Soluble Polymers ◽  
Flow Enhancement
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