Formation and rheological properties of wormlike micelles by N-hexadecyl-N-methylpiperidinium bromide and sodium salicylate

Zhao, Mingwei; Yan, Zhihu; Dai, Caili; Du, Mingyong; Li, Hui; Zhao, Yurong; Wang, Kai; Ding, Qinfang

doi:10.1007/s00396-014-3495-2

Cited by 23 publications

(12 citation statements)

References 67 publications

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“…The surfactants can self-assemble to form aggregates with different microstructures. At a concentration above the critical micelle concentration (cmc), they usually form spherical micelles [ 1 ]. With the further increase of concentration, surfactant molecules can form aggregates with different morphologies, such as rodlike micelles, wormlike micelles, vesicles, lamellar phases, and liquid crystals [ 2 ].…”

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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Section: Introductionmentioning

confidence: 99%

The Study of a Novel Nanoparticle-Enhanced Wormlike Micellar System

et al. 2017

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“…Molecular self-assembly is a kind of entity with a special structure, which associates spontaneously by molecules [ 1 , 2 , 3 , 4 , 5 , 6 ]. It not only promotes the development of functional and complex materials, but also leads to the formation of different aggregate morphologies such as crystalline structures, wormlike micelles, vesicles, and spherical micelles [ 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

The Formation of pH-Sensitive Wormlike Micelles in Ionic Liquids Driven by the Binding Ability of Anthranilic Acid

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et al. 2015

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Wormlike micelles are typically formed by mixing cationic and anionic surfactants because of attractive interactions in oppositely charged head-groups. The structural transitions of wormlike micelles triggered by pH in ionic liquids composed of N-alkyl-N-methylpyrrolidinium bromide-based ILs (ionic liquids) and anthranilic acid were investigated. These structures were found responsible for the variations in flow properties identified by rheology and dynamic light scattering, and account for the structures observed with cryogenic transmission electron microscopy (Cryo-TEM). High-viscosity, shear-thinning behavior, and Maxwell-type dynamic rheology shown by the system at certain pH values suggested that spherical micelles grow into entangled wormlike micelles. Light scattering profiles also supported the notion of pH-sensitive microstructural transitions in the solution. Cryo-TEM images confirmed the presence of spherical micelles in the low-viscosity sample and entangled wormlike micelles in the peak viscosity sample. Nuclear magnetic resonance spectroscopy analysis revealed that the pH sensitivity of ionic liquid systems originated from the pH-dependent binding ability of anthranilic acid to the cationic headgroup of ionic liquids.

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“…While at high shear frequencies, practical data begin to deviate from theoretical semicircle in the Cole-Cole plot. This phenomenon can be explained by the appearance of Rouse modes or “breather modes” [ 14 , 26 ], which is usually observed in other wormlike micelles reported before [ 16 , 25 ].…”

Section: Resultsmentioning

confidence: 84%

“…From Figure 2 , it can be seen clearly that with the increase of temperature, steady shear viscosities become smaller dramatically, which can be interpreted as the acceleration of the dynamic process of breaking and recombination of micelles with temperature increasing [ 25 ]. Similarly, even at different temperatures, NEWMS still have larger viscosities than wormlike micelles without nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

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Can More Nanoparticles Induce Larger Viscosities of Nanoparticle-Enhanced Wormlike Micellar System (NEWMS)?

et al. 2017

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There have been many reports about the thickening ability of nanoparticles on the wormlike micelles in the recent years. Through the addition of nanoparticles, the viscosity of wormlike micelles can be increased. There still exists a doubt: can viscosity be increased further by adding more nanoparticles? To answer this issue, in this work, the effects of silica nanoparticles and temperature on the nanoparticles-enhanced wormlike micellar system (NEWMS) were studied. The typical wormlike micelles (wormlike micelles) are prepared by 50 mM cetyltrimethyl ammonium bromide (CTAB) and 60 mM sodium salicylate (NaSal). The rheological results show the increase of viscoelasticity in NEWMS by adding nanoparticles, with the increase of zero-shear viscosity and relaxation time. However, with the further increase of nanoparticles, an interesting phenomenon appears. The zero-shear viscosity and relaxation time reach the maximum and begin to decrease. The results show a slight increasing trend for the contour length of wormlike micelles by adding nanoparticles, while no obvious effect on the entanglement and mesh size. In addition, with the increase of temperature, remarkable reduction of contour length and relaxation time can be observed from the calculation. NEWMS constantly retain better viscoelasticity compared with conventional wormlike micelles without silica nanoparticles. According to the Arrhenius equation, the activation energy E a shows the same increase trend of NEWMS. Finally, a mechanism is proposed to explain this interesting phenomenon.

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Formation and rheological properties of wormlike micelles by N-hexadecyl-N-methylpiperidinium bromide and sodium salicylate

Cited by 23 publications

References 67 publications

The Study of a Novel Nanoparticle-Enhanced Wormlike Micellar System

The Study of a Novel Nanoparticle-Enhanced Wormlike Micellar System

The Formation of pH-Sensitive Wormlike Micelles in Ionic Liquids Driven by the Binding Ability of Anthranilic Acid

Can More Nanoparticles Induce Larger Viscosities of Nanoparticle-Enhanced Wormlike Micellar System (NEWMS)?

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