Nanoparticles induced micellar growth in sodium oleate wormlike micelles solutions

Fan, Qing; Li, Wenhong; Zhang, Yongqiang; Fan, Wei; Li, Xuefeng; Dong, Jinfeng

doi:10.1007/s00396-015-3641-5

Cited by 29 publications

(29 citation statements)

References 33 publications

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“…It was suggested that the WLMs are connected to surfactant layer on the particle surface by their end-caps because these parts are energetically less favorable in comparison with cylindrical central parts of the micelles. Similar results were obtained for silica nanoparticles oppositely charged with respect to WLMs [14,18]. At the same time, addition of particles into dense WLM network either decreased rheological properties or did not significantly alter them [14,18].…”

Section: Introductionsupporting

confidence: 82%

“…Similar results were obtained for silica nanoparticles oppositely charged with respect to WLMs [14,18]. At the same time, addition of particles into dense WLM network either decreased rheological properties or did not significantly alter them [14,18].…”

Section: Introductionsupporting

confidence: 82%

“…Properties of the WLM network can be modified by nanoparticles. Until now, only spherical inorganic particles were dispersed within WLM network [14][15][16][17][18][19][20]. It was shown that these particles can significantly increase the rheological properties.…”

Section: Introductionmentioning

confidence: 99%

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Injectable ultra-soft hydrogel with natural nanoclay

Молчанов¹,

Efremova²,

Kiseleva³

et al. 2019

Nanosystems: Phys. Chem. Math.

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Soft hydrogels based on a transient network of wormlike surfactant micelles containing bentonite nanoclay tactoids as physical cross-links were developed. The network was composed of mixed micelles of nontoxic zwitterionic surfactant oleylamidopropyldimethylcarboxybetaine and an anionic surfactant sodium dodecyl sulfate. It was demonstrated that before nanoclay addition the solution has pronounced viscoelastic properties with zero-shear viscosity of 100 Pa s and plateau modulus around 7 Pa, which were attributed to the formation of an entangled micellar network. The solution demonstrated pronounced shear thinning behavior provided by the elongation of wormlike micellar chains in flow direction. Upon addition of non-exfoliated nanoclay particles, the zero-shear viscosity increases by an order of magnitude, while the useful property of shear-induced thinning is retained. Oscillation amplitude tests show that viscoelastic fluid becomes hydrogel upon addition of nanoclay, because elastic response was observed even at large stress amplitudes. This behavior was attributed to the formation of nanoclaywormlike micelles junctions. Prepared soft hydrogel is a promising candidate for injection applications, because of its self-assembled structure providing pronounced shear-thinning behavior and fast recovery of rheological properties at rest. In this nanocomposite material, nanoclay tactoids strengthen the hydrogels and can serve as reservoirs for the delivery of various substances.

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Section: Introductionsupporting

confidence: 82%

Section: Introductionsupporting

confidence: 82%

See 1 more Smart Citation

Injectable ultra-soft hydrogel with natural nanoclay

Молчанов¹,

Efremova²,

Kiseleva³

et al. 2019

Nanosystems: Phys. Chem. Math.

View full text Add to dashboard Cite

show abstract

“…Luo et al used barium titanate (BaTiO 3 ) nanoparticles to modify wormlike micelles by the anionic surfactant fatty acid methyl ester sulfonate sodium and investigated influence of different factors on the viscoelasticity of wormlike micelles, such as concentration of surfactant, mass fraction of nanoparticles, and temperature. Fan et al found that silica nanoparticles can induce micellar growth in NaOA (sodium oleate) wormlike micelles solutions, enhancing the bulk viscosity [ 23 ]. Pletneva et al have investigated novel viscoelastic smart suspensions based on cationic wormlike micelles with the addition of oppositely charged submicron magnetic particles [ 24 ].…”

Section: Introductionmentioning

confidence: 99%

The Study of a Novel Nanoparticle-Enhanced Wormlike Micellar System

et al. 2017

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In this work, a novel nanoparticle-enhanced wormlike micellar system (NEWMS) was proposed based on the typical wormlike micelles composed of cetyltrimethylammonium bromide (CTAB) and sodium salicylate (NaSal). In order to strengthen the structure of wormlike micelles, silica nanoparticles are used to design the novel nanoparticle-enhanced wormlike micelle. The stability and morphologies of silica nanoparticles were studied by dynamic light scattering (DLS) and transmission electron microscopy (TEM) at first. After the formation of NEWMS, the rheological properties were discussed in detail. The zero-shear viscosity of NEWMS increases with the addition of silica nanoparticles. Dynamic oscillatory measurements show the viscoelastic properties of NEWMS. Through comparison with the original wormlike micelles, the entanglement length and mesh size of NEWMS are nearly unchanged, while the contour length increases with the increase of silica concentration. These phenomena confirm the enhanced influence of silica nanoparticles on wormlike micelles. The formation mechanism of NEWMS, especially the interactions between wormlike micelles and nanoparticles, is proposed. This work can deepen the understanding of the novel NEWMS and widen their applications.

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“…To solve this urgent problem, several research groups have proposed adding nanoparticles to enhance the viscoelasticity of wormlike micellar systems (Dai et al, ; Fei et al, ; Sambasivam et al, ). Fan et al analyzed the rheological properties of a system consisting of sodium oleate/octyltrimethyl ammonium bromide (NaOA/OTAB) and nanosilica (Fan et al, ). Compared with the pure micellar solution, the system with a moderate concentration of nanoparticles has a larger zero‐shear viscosity.…”

Section: Introductionmentioning

confidence: 99%

Effect of Silica Nanoparticles on Wormlike Micelles with Different Entanglement Degrees

Zhao

Gao

Dai

et al. 2019

J Surfact & Detergents

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Enhancing the viscoelastic properties of wormlike micelles by adding nanoparticles has been widely reported. Various mechanisms have been proposed to explain how nanoparticles strengthen the network formed by wormlike micelles. It remains unclear whether nanoparticles produce the same effect on systems with different entanglement degrees. To clarify this issue, the concentration of potassium chloride was used to control the entanglement degree of wormlike micelles. The rheological behavior of different nanoparticle‐enhanced wormlike micellar systems (NEWMS) was investigated using rheology. Three critical parameters including zero‐shear viscosity (η0), relaxation time (τR), and contour length (L) were calculated to analyze the effect of nanoparticles on the different wormlike micellar systems. An appropriate mechanism describing the interaction between nanoparticles and wormlike micelles with different structures was proposed.

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Nanoparticles induced micellar growth in sodium oleate wormlike micelles solutions

Cited by 29 publications

References 33 publications

Injectable ultra-soft hydrogel with natural nanoclay

Injectable ultra-soft hydrogel with natural nanoclay

The Study of a Novel Nanoparticle-Enhanced Wormlike Micellar System

Effect of Silica Nanoparticles on Wormlike Micelles with Different Entanglement Degrees

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