The rheological properties of paper coating suspension and its application. Part 1: the influence of solid content and ionic strength on flow properties

1996 ◽  
Vol 25 (4) ◽  
pp. 15-24 ◽  
Author(s):  
Houssni El‐Saied ◽  
Altaf H. Basta ◽  
Samir Y. El‐Sayed ◽  
Fatma Morsy
Keyword(s):  
Ionic Strength ◽  
Rheological Properties ◽  
Solid Content ◽  
Flow Properties ◽  
Paper Coating ◽  
Coating Suspension

Effect of ionic strength on assembly behaviors and rheological properties of rice glutelin based fibrils

2021 ◽  
pp. 103224
Author(s):  
Ting Li ◽  
Li Wang ◽  
Xinxia Zhang ◽  
Peibin Yu ◽  
Zhengxing Chen
Keyword(s):  
Ionic Strength ◽  
Rheological Properties

Effect of Cationic Polyacrylate Emulsion Properties on Paper Coating Properties

2011 ◽  
Vol 380 ◽  
pp. 156-159
Author(s):  
Jin Li Li ◽  
Quan Xiao Liu ◽  
Wen Cai Xu ◽  
Yu Bin Lv
Keyword(s):  
Adverse Effects ◽  
Ph Value ◽  
Solid Content ◽  
Moderate Level ◽  
Density Increase ◽  
Content Increase ◽  
Coating Properties ◽  
Paper Coating ◽  
Surface Sizing

Cationic polyacrylate emulsions with different properties were prepared in lad and used as surface sizing agent, the results showed that as the increase of solid content, the properties of paper increase at first but keep constant if the solid content increase further; as the increase of the pH value of the emulsion, the strength of the paper decrease, smoothness increase, gloss and whiteness decrease, saturation and printing density increase; the increase of the size of emulsion has adverse effects on the properties of the paper, so the size should not be too large; the viscosity should not be too large and not be too low, it should be kept in a moderate level.

Rheology of bentonite dispersions: Role of ionic strength and solid content

2021 ◽  
Vol 214 ◽  
pp. 106275
Author(s):  
Yuan Lin ◽  
Huaitao Qin ◽  
Jin Guo ◽  
Jiawang Chen
Keyword(s):  
Ionic Strength ◽  
Solid Content

Development of New Models to Determine the Rheological Parameters of Water-based Drilling Fluid Using Artificial Intelligence

2021 ◽  
Author(s):  
Farqad Hadi ◽  
Ali Noori ◽  
Hussein Hussein ◽  
Ameer Khudhair
Keyword(s):  
Rheological Properties ◽  
High Performance ◽  
Drilling Fluid ◽  
Gel Strength ◽  
Solid Content ◽  
Rheological Parameters ◽  
Water Based ◽  
Fluid Properties ◽  
Drilling Operations ◽  
Marsh Funnel

Abstract It is well known that drilling fluid is a key parameter for optimizing drilling operations, cleaning the hole, and managing the rig hydraulics and margins of surge and swab pressures. Although the experimental works present valid and reliable results, they are expensive and time consuming. On the other hand, continuous and regular determination of the rheological mud properties can perform its essential functions during well construction. More uncertainties in planning the drilling fluid properties meant that more challenges may be exposed during drilling operations. This study presents two predictive techniques, multiple regression analysis (MRA) and artificial neural networks (ANNs), to determine the rheological properties of water-based drilling fluid based on other simple measurable properties. While mud density (MW), marsh funnel (MF), and solid% are key input parameters in this study, the output functions or models are plastic viscosity (PV), yield point (YP), apparent viscosity (AV), and gel strength. The prediction methods were demonstrated by means of a field case in eastern Iraq, using datasets from daily drilling reports of two wells in addition to the laboratory measurements. To test the performance ability of the developed models, two error-based metrics (determination coefficient R2 and root mean square error RMSE) have been used in this study. The current results of this study support the evidence that MW, MF, and solid% are consistent indexes for the prediction of rheological properties. Both mud density and solid content have a relative-significant effect on increasing PV, YP, AV, and gel strength. However, a scattering around each fit curve is observed which proved that one rheological property alone is not sufficient to estimate other properties. The results also reveal that both MRA and ANN are conservative in estimating the fluid rheological properties, but ANN is more precise than MRA. Eight empirical mathematical models with high performance capacity have been developed in this study to determine the rheological fluid properties based on simple and quick equipment as mud balance and marsh funnel. This study presents cost-effective models to determine the rheological fluid properties for future well planning in Iraqi oil fields.

scholarly journals Compositional and Temperature Effects on the Rheological Properties of Polyelectrolyte–Surfactant Hydrogels

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 927 ◽  
Author(s):  
Jiří Smilek ◽  
Sabína Jarábková ◽  
Tomáš Velcer ◽  
Miloslav Pekař
Keyword(s):  
Ionic Strength ◽  
Rheological Properties ◽  
Surfactant Concentration ◽  
Background Electrolyte ◽  
Effect Of Temperature ◽  
Physical Interactions ◽  
Chain Conformations ◽  
Oppositely Charged ◽  
Electrolyte Ph ◽  
Positively Charged

The rheological properties of hydrogels prepared by physical interactions between oppositely charged polyelectrolyte and surfactant in micellar form were studied. Specifically, hyaluronan was employed as a negatively charged polyelectrolyte and Septonex (carbethopendecinium bromide) as a cationic surfactant. Amino-modified dextran was used as a positively charged polyelectrolyte interacting with sodium dodecylsulphate as an anionic surfactant. The effects of the preparation method, surfactant concentration, ionic strength (the concentration of NaCl background electrolyte), pH (buffers), multivalent cations, and elevated temperature on the properties were investigated. The formation of gels required an optimum ionic strength (set by the NaCl solution), ranging from 0.15–0.3 M regardless of the type of hydrogel system and surfactant concentration. The other compositional effects and the effect of temperature were dependent on the polyelectrolyte type or its molecular weight. General differences between the behaviour of hyaluronan-based and cationized dextran-based materials were attributed to differences in the chain conformations of the two biopolymers and in the accessibility of their charged groups.

scholarly journals Effect of ionic strength on shear-thinning nanoclay–polymer composite hydrogels

2018 ◽  
Vol 6 (8) ◽  
pp. 2073-2083 ◽  
Author(s):  
Amir Sheikhi ◽  
Samson Afewerki ◽  
Rahmi Oklu ◽  
Akhilesh K. Gaharwar ◽  
Ali Khademhosseini
Keyword(s):  
Ionic Strength ◽  
Rheological Properties ◽  
Polymer Composite ◽  
Biomedical Applications ◽  
Shear Thinning ◽  
Composite Hydrogels ◽  
Polymer Interactions ◽  
Fundamental Insight ◽  
Insight Into

The effect of ionic strength on the structure and rheological properties of nanoclay–gelatin shear-thinning biomaterials (STBs) is investigated. A fundamental insight into nanoclay–polymer interactions in physiological environments is provided to design clay-based biomaterials for biomedical applications.

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