Influence of cellulose nanofibers on the rheological behavior of silica-based shear-thickening fluid

Ghosh, Aranya; Chauhan, Indu; Majumdar, Abhijit; Butola, Bhupendra Singh

doi:10.1007/s10570-017-1440-5

Cited by 41 publications

(16 citation statements)

References 28 publications

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“…Our results concretize recent scientific effort to unravel shear thickening in dense suspensions and to understand its control through the addition of plasticizers [25,52,53], nanofibers [54], or large particles [55] and the application of magnetic fields [56] or transverse shear [57]. Our work may also shed new light on undesirable effects in industrial processes such as stress surges [23,58], granulation, and slurry fracture [59,60], and help to further develop promising applications such as fabrics impregnated with shear-thickening fluids for improved resistance to impact [61][62][63][64].…”

Section: Discussionsupporting

confidence: 81%

Uncovering Instabilities in the Spatiotemporal Dynamics of a Shear-Thickening Cornstarch Suspension

2018

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Recent theories predict that discontinuous shear thickening (DST) involves an instability, the nature of which remains elusive. Here, we explore unsteady dynamics in a dense cornstarch suspension by coupling long rheological measurements under constant shear stresses to ultrasound imaging. We demonstrate that unsteadiness in DST results from localized bands that travel along the vorticity direction with a specific signature on the global shear rate response. These propagating events coexist with quiescent phases for stresses slightly above DST onset, resulting in intermittent, turbulentlike dynamics. Deeper into DST, events proliferate, leading to simpler, Gaussian dynamics. We interpret our results in terms of unstable vorticity bands as inferred from recent model and numerical simulations.

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Section: Discussionsupporting

confidence: 81%

Uncovering Instabilities in the Spatiotemporal Dynamics of a Shear-Thickening Cornstarch Suspension

2018

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“…Thus, these oxygen-containing functions could form hydrogen bonds with silanol groups in the surface of silica, which improves the interaction between the M-MWNTs and silica particles. As a result, the particles travel a shorter distance to form the “hydrocluster” and the shear-thickening occurs at a lower shear rate [19]. Additionally, the MWNTs with a high aspect ratio entangled easily and formed networks, which could enhance the viscosity of the system [27].…”

Section: Resultsmentioning

confidence: 99%

“…A series of influence factors, such as particle concentration [13], particle size [14], particle hardness [15], dispersing medium [16], and weave structure [17], have been systematically evaluated. To further enhance the stab resistance of fabrics, nanofillers were explored to promote the effectiveness of STF [5,18,19,20]. Some previous work is summarized in Table 1.…”

Section: Introductionmentioning

confidence: 99%

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Shear-Thickening Fluid Using Oxygen-Plasma-Modified Multi-Walled Carbon Nanotubes to Improve the Quasi-Static Stab Resistance of Kevlar Fabrics

Wang

Liu

et al. 2018

Polymers

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The excellent mechanical property and light weight of protective materials are vital for practical application in body armor. In this study, O2-plasma-modified multi-walled carbon nanotubes (M-MWNTs) were introduced into shear-thickening fluid (STF)-impregnated Kevlar woven fabrics to increase the quasi-static stab resistance and decrease the composite weight. The rheological test showed that the addition of 0.06 wt. % M-MWNT caused a marked increase in the peak viscosity from 1563 to 3417 pa·s and a decrease in the critical shear rate from 14.68 s−1 to 2.53 s−1. The storage modulus (G′) and loss modulus (G″) showed a higher degree of abrupt increase with the increase of shear stress. The yarn pull-out test showed that the yarn friction of M-MWNT/STF/Kevlar fabrics was far superior to the original fabrics. Importantly, under similar areal density, the M-MWNT/STF/Kevlar fabrics could resist 1261.4 N quasi-static stab force and absorb 41.3 J energy, which were much higher than neat Kevlar fabrics. The results of this research indicated that quasi-static stab resistance was improved by M-MWNTs, which was attributed to the excellent shear-thickening effect and the high yarn friction. Therefore, M-MWNT/STF/Kevlar fabrics have a broad prospect in the fields of body protection.

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“…This is especially true when the ultrasonicator power amplitude was increased from 20 to 60% and the sonication time was increased from 5 to 7 h. Another example is that the shear‐thickening behavior is extremely sensitive to the filler loading. Many studies investigated the effect of <0.5 wt% nanoparticles such as clay , carbon nanotubes , cellulose nanofibers , silicon carbide , and zinc oxide on the shear‐thickening behavior of STF. In most cases, the shear‐thickening behavior significantly changed even in the presence of 0.1 wt% nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

High‐velocity impact performance of shear‐thickening fluid/kevlar composites made by the padding process

et al. 2018

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Padding is known to enhance the dyeing of fabric. In this study, shear‐thickening fluid (STF)/multilayer Kevlar composites were constructed through a padding process. This paper describes the padding process used, and discusses the ballistic impact and stab resistance of the resulting composites. Padding STF into Kevlar fabric is better than impregnation. The resulting composites are thinner, lighter, and more flexible than conventional Kevlar body armor, while providing similar protection. Previous studies have shown that padding improves the low‐velocity impact resistance of single‐layer Kevlar. This study demonstrates that padding also improves the high‐velocity impact performance of STF/multilayer Kevlar composites. POLYM. COMPOS., 40:3040–3049, 2019. © 2018 Society of Plastics Engineers

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Influence of cellulose nanofibers on the rheological behavior of silica-based shear-thickening fluid

Cited by 41 publications

References 28 publications

Uncovering Instabilities in the Spatiotemporal Dynamics of a Shear-Thickening Cornstarch Suspension

Uncovering Instabilities in the Spatiotemporal Dynamics of a Shear-Thickening Cornstarch Suspension

Shear-Thickening Fluid Using Oxygen-Plasma-Modified Multi-Walled Carbon Nanotubes to Improve the Quasi-Static Stab Resistance of Kevlar Fabrics

High‐velocity impact performance of shear‐thickening fluid/kevlar composites made by the padding process

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