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10.3390/ma10091096
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Article

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

by
Mingwei Zhao
,
Yue Zhang
,
Chenwei Zou
,
Caili Dai
*,
Mingwei Gao
,
Yuyang Li
,
Wenjiao Lv
,
Jianfeng Jiang
and
Yining Wu
*
State Key Laboratory of Heavy Oil Processing, School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
*
Authors to whom correspondence should be addressed.
Materials 2017, 10(9), 1096; https://doi.org/10.3390/ma10091096
Submission received: 28 August 2017 / Revised: 15 September 2017 / Accepted: 15 September 2017 / Published: 18 September 2017
(This article belongs to the Section Advanced Materials Characterization)
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Abstract

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 Ea shows the same increase trend of NEWMS. Finally, a mechanism is proposed to explain this interesting phenomenon.
Keywords: nanoparticle; viscosity; NEWMS; viscoelasticity; temperature nanoparticle; viscosity; NEWMS; viscoelasticity; temperature

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MDPI and ACS Style

Zhao, M.; Zhang, Y.; Zou, C.; Dai, C.; Gao, M.; Li, Y.; Lv, W.; Jiang, J.; Wu, Y. Can More Nanoparticles Induce Larger Viscosities of Nanoparticle-Enhanced Wormlike Micellar System (NEWMS)? Materials 2017, 10, 1096. https://doi.org/10.3390/ma10091096

AMA Style

Zhao M, Zhang Y, Zou C, Dai C, Gao M, Li Y, Lv W, Jiang J, Wu Y. Can More Nanoparticles Induce Larger Viscosities of Nanoparticle-Enhanced Wormlike Micellar System (NEWMS)? Materials. 2017; 10(9):1096. https://doi.org/10.3390/ma10091096

Chicago/Turabian Style

Zhao, Mingwei, Yue Zhang, Chenwei Zou, Caili Dai, Mingwei Gao, Yuyang Li, Wenjiao Lv, Jianfeng Jiang, and Yining Wu. 2017. "Can More Nanoparticles Induce Larger Viscosities of Nanoparticle-Enhanced Wormlike Micellar System (NEWMS)?" Materials 10, no. 9: 1096. https://doi.org/10.3390/ma10091096

APA Style

Zhao, M., Zhang, Y., Zou, C., Dai, C., Gao, M., Li, Y., Lv, W., Jiang, J., & Wu, Y. (2017). Can More Nanoparticles Induce Larger Viscosities of Nanoparticle-Enhanced Wormlike Micellar System (NEWMS)? Materials, 10(9), 1096. https://doi.org/10.3390/ma10091096

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