Comparison between the interfacial and bulk rheology of sodium carboxymethylcellulose in the presence of cationic and non-ionic surfactants

Masrat, Rohi; Shah, Rais Ahmad; Lone, Mohd Sajid; Ashraf, Uzma; Afzal, Saima; Rather, Ghulam Mohammad; Dar, Aijaz Ahmad

doi:10.1016/j.molliq.2020.112477

Cited by 7 publications

(2 citation statements)

References 55 publications

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“…From application based objectives, studies reported on the emulsion stability governed by electrolyte addition in the mixture of phospholipids with varied nonionic surfactants, ABA poly(oxyethylene) (POE), poly(oxypropylene) (POP) block copolymers (poloxamers), where POE segments provided stability in the aqueous media by a repulsion effect and POP acted as the initiator of monomer formation. , Meanwhile, a recent study explored the non-Newtonian and shear thinning behavior of a cationic-nonionic surfactant (CPB-Span-40) with varied nonionic head groups on sodium carboxymethyl cellulose (NaCMC). These interactions were studied in bulk as well as at the air–water interface using solution theory insight providing applications as viscosity modifiers in food additives, as a thickener and binder in cosmetic products and in enhanced oil recovery …”

Section: Introductionmentioning

confidence: 99%

Effect of Electrolytes on Solution and Interfacial Behaviors of Double Chain Cationic–Nonionic Surfactant Mixtures for Hydrophobic Surface Wetting and Oil/Water Emulsion Stability Applications

Banerjee

Paria

2021

Langmuir

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The solution behaviors of the binary mixture of double chain cationic surfactant didodecyldimethylammonium bromide (DDAB) with nonionic surfactants of varied head groups, EO-9 and EO-40, in the presence and absence of electrolytes were studied and found nonideal behavior. The different physicochemical properties such as Gibb’s surface excess (Γ), minimum area per molecule (A min), and interaction parameters at bulk (β M ) and interface (β σ ) were calculated. In the presence of nonionic surfactants, lowering of CMC, CVC, and surface tension at these two concentrations of DDAB were observed. The β M and β σ values indicate strong interaction between DDAB and EO-40 mixed system. Further, addition of electrolytes to the mixed systems show increased interaction and change of physicochemical properties because of the combination of electrical and salting out effects.

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Section: Introductionmentioning

confidence: 99%

Effect of Electrolytes on Solution and Interfacial Behaviors of Double Chain Cationic–Nonionic Surfactant Mixtures for Hydrophobic Surface Wetting and Oil/Water Emulsion Stability Applications

Banerjee

Paria

2021

Langmuir

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“…3.1 Rheological experiment CMC solution (Masrat et al, 2020) has a wide range of uses in food, medicine, chemical and petroleum industries. It is a kind of viscoelastic polymer solutions.…”

Section: Experimental Verificationmentioning

confidence: 99%

Unsteady stagnation-point flow of upper-convected Oldroyd-B nanofluid with variable thermal conductivity and relaxation-retardation double-diffusion model

Bai

Wang

Zhang

2021

HFF

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Purpose This paper aims to examine the unsteady stagnation-point flow, heat and mass transfer of upper-convected Oldroyd-B nanofluid along a stretching sheet. The thermal conductivity is taken in a temperature-dependent fashion. With the aid of Cattaneo–Christov double-diffusion theory, relaxation-retardation double-diffusion model is advanced, which considers not only the effect of relaxation time but also the influence of retardation time. Convective heat transfer is not ignored. Additionally, experiments verify that with sodium carboxymethylcellulose (CMC) solutions as base fluid, not only the flow curve conforms to Oldroyd-B model but also thermal conductivity decreases linearly with the increase of temperature. Design/methodology/approach The suitable pseudo similarity transformations are adopted to address partial differential equations to ordinary differential equations, which are computed analytically through homotopy analysis method (HAM). Findings It is worth noting that the increase of stagnation-point parameter diminishes momentum loss, so that the velocity enlarges, which makes boundary layer thickness thinner. With the increase of thermal retardation time parameter, the nanofluid temperature rises that implies heat penetration depth boosts up and the additional time required for nanofluid to heat transfer to surrounding nanoparticles is less, which is similar to the effects of concentration retardation time parameter on concentration field. Originality/value This paper aims to explore the unsteady stagnation-point flow, heat and mass transfer of upper-convected Oldroyd-B nanofluid with variable thermal conductivity and relaxation-retardation double-diffusion model.

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Rheology and microscopy analysis of polymer–surfactant complexes

Moud

2022

Colloid Polym Sci

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Comparison between the interfacial and bulk rheology of sodium carboxymethylcellulose in the presence of cationic and non-ionic surfactants

Cited by 7 publications

References 55 publications

Effect of Electrolytes on Solution and Interfacial Behaviors of Double Chain Cationic–Nonionic Surfactant Mixtures for Hydrophobic Surface Wetting and Oil/Water Emulsion Stability Applications

Effect of Electrolytes on Solution and Interfacial Behaviors of Double Chain Cationic–Nonionic Surfactant Mixtures for Hydrophobic Surface Wetting and Oil/Water Emulsion Stability Applications

Unsteady stagnation-point flow of upper-convected Oldroyd-B nanofluid with variable thermal conductivity and relaxation-retardation double-diffusion model

Rheology and microscopy analysis of polymer–surfactant complexes

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