Rheological behavior of polyacrylamide solution in the presence of cationic Gemini surfactants/conventional surfactants

Khan, Mohd Bilal

doi:10.1002/apj.2109

Cited by 13 publications

(8 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…10). 72 This leads to the formation of ionic plasma that can be interrogated by time-of-flight mass spectroscopy or charge integrators. The instruments used for mass spectroscopy are typically duplicates of mass spectrometers on-board various spacecraft.…”

Section: Impact Ionisation Experimentsmentioning

confidence: 99%

See 1 more Smart Citation

Space science applications for conducting polymer particles: synthetic mimics for cosmic dust and micrometeorites

et al. 2015

View full text Add to dashboard Cite

Over the last decade or so, a range of polypyrrole-based particles have been designed and evaluated for space science applications. This electrically conductive polymer enables such particles to efficiently acquire surface charge, which in turn allows their acceleration up to the hypervelocity regime (>1 km s(-1)) using a Van de Graaff accelerator. Either organic latex (e.g. polystyrene or poly(methyl methacrylate)) or various inorganic materials (such as silica, olivine or pyrrhotite) can be coated with polypyrrole; these core-shell particles are useful mimics for understanding the hypervelocity impact ionisation behaviour of micro-meteorites (a.k.a. cosmic dust). Impacts on metal targets at relatively low hypervelocities (<10 km s(-1)) generate ionic plasma composed mainly of molecular fragments, whereas higher hypervelocities (>10 km s(-1)) generate predominately atomic species, since many more chemical bonds are cleaved if the particles impinge with higher kinetic energy. Such fundamental studies are relevant to the calibration of the cosmic dust analyser (CDA) onboard the Cassini spacecraft, which was designed to determine the chemical composition of Saturn's dust rings. Inspired by volcanism observed for one of the Jupiter's moons (Io), polypyrrole-coated sulfur-rich latexes have also been designed to help space scientists understand ionisation spectra originating from sulfur-rich dust particles. Finally, relatively large (20 μm diameter) polypyrrole-coated polystyrene latexes have proven to be useful for understanding the extent of thermal ablation of organic projectiles when fired at ultralow density aerogel targets at up to 6.1 km s(-1) using a Light Gas Gun. In this case, the sacrificial polypyrrole overlayer simply provides a sensitive spectroscopic signature (rather than a conductive overlayer), and the scientific findings have important implications for the detection of organic dust grains during the Stardust space mission.

show abstract

Section: Impact Ionisation Experimentsmentioning

confidence: 99%

“…Schematic representation showing the main events during a typical hypervelocity impact experiment. Adapted from Khan et al,72 Fig. 3.…”

mentioning

confidence: 99%

Space science applications for conducting polymer particles: synthetic mimics for cosmic dust and micrometeorites

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Since polymer was the earliest drag reduction additive that has been widely studied, the current commonly used constitutive equations are mostly established for polymer solution, but there is still lack of constitutive equations specifically for surfactant solution 40 . Considering that the surfactant solution has a certain similarity with the polymer solution, the constitutive equations of the polymer solution are generally used in the research of surfactant turbulence drag reduction.…”

Section: Resultsmentioning

confidence: 99%

Effects of oilfield injection water component on rheological characteristics of CTAC/NaSal aqueous solution

Jing

Yuan

Yin

et al. 2020

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

The additive drag reduction technology has wide application and high economic value in drag reduction of oilfield water injection system. With CTAC/NaSal (cetyltrimethyl ammonium chloride/sodium salicylate) aqueous solution as the research object, this paper explores the effects of oilfield water component on its rheological characteristics under the experimental condition of 10–60°C, .1–1 000 s−1, and 0.01–0.21 wt %. The experimental results reveal that the oil cannot inhibit the formation of shear‐induced structure in the solution and strengthen the temperature resistance of the solution; NaHCO3 and CaCl2, two types of salts, have similar effects on rheological characteristics of the CTAC/NaSal solution. The solution viscosity increases first and then decreases with the increase of salt concentration. And the viscosity peak gradually moves to the left lower with the increase of temperature, which means that the salt tolerance of the solution decreases with the increase of temperature. Moreover, the Giesekus model has the best performance for describing the rheological characteristics of surfactant solutions. Within the experimental concentration range, the relative error is ±25%.

show abstract

“…At present, there have been many studies reporting on the viscosity property of water-soluble polymer solutions [6][7][8][9]. It is well known that the factors influencing the viscosity property of polymer solutions include, not only the polymer structure itself, but also the salts, pH, surfactants, and so on, in the solutions [10][11][12]. Due to the existence of salts in most polymer solutions when in practical application, the effect of the salts on the viscosity property of the polymer solution is still a topic of interest [8,13].…”

Section: Introductionmentioning

confidence: 99%

Viscosity Behavior of P(DAC-AM) with Serial Cationicity and Intrinsic Viscosity in Inorganic Salt Solutions

Chen

Zhang

et al. 2019

Polymers

View full text Add to dashboard Cite

The poly(acryloyloxyethyl trimethyl ammonium chloride–co–acrylamide), P(DAC-AM), is a kind of cationic polyelectrolyte usually applied in a solution form, and its performance is affected by its structure and the environment where it is used. In particular, its viscosity properties in salt solutions are directly related to its efficacy in various applications, and the performance is one of the most important solution properties. Therefore, in this paper, the effects of the salt concentration and valence of seven kinds of inorganic salts, NaCl, LiCl, KCl, MgCl2, AlCl3, Na2SO4, and Na3PO4, on the values of apparent viscosity (ηa) of P(DAC-AM) samples with cationicity of 10%, 50%, and 90%, and intrinsic viscosity ([η]) of 5, 10, and 15 dL/g were investigated. The ηa was determined using a rotational viscometer. The interaction mechanism between the polymers and salt ions was also investigated. The results showed that depending on the salt concentration, the ηa firstly decreased sharply to the inflection point which indicated the minimum volume of the molecule shrinking, and then either maintained the value unchanged or increased. The salt concentration corresponding to the inflection point decreased with the increase of the salt ion valence but with the reduction of the cationicity of the polymer. The ηa at the inflection point increased as the [η] of the polymer grew. This indicated that the salt concentration and the salt ion valence had a notable impact on the stretch of the cationic polymer molecule in the salt solutions. It was discovered that the phenomenon of the increase of the ηa of P(DAC-AM) samples in the multivalent salt solutions after the inflection point was caused by not only the increase of the ηa of the complexes formed from the pure salts, but also the viscosity resistance of the charge and volume between the polymer molecules and salt ions, as well as the complexes themselves. The linear relationship between the increased ηa and the salt concentration, representing the interaction both among the complexes themselves and between the polymer and complexes, was obtained. Furthermore, the interaction model between the salt ions and P(DAC-AM) molecules in a wide range of salt concentrations was illustrated.

show abstract

Rheological behavior of polyacrylamide solution in the presence of cationic Gemini surfactants/conventional surfactants

Cited by 13 publications

References 16 publications

Space science applications for conducting polymer particles: synthetic mimics for cosmic dust and micrometeorites

Space science applications for conducting polymer particles: synthetic mimics for cosmic dust and micrometeorites

Effects of oilfield injection water component on rheological characteristics of CTAC/NaSal aqueous solution

Viscosity Behavior of P(DAC-AM) with Serial Cationicity and Intrinsic Viscosity in Inorganic Salt Solutions

Contact Info

Product

Resources

About