Synergistic effect of pH-responsive wormlike micelles based on a simple amphiphile

Soft Matter ◽  
2016 ◽  
Vol 12 (20) ◽  
pp. 4549-4556 ◽  
Author(s):  
Xuepeng Wu ◽  
Yining Wu ◽  
Shuai Yang ◽  
Mingwei Zhao ◽  
Mingwei Gao ◽  
...  
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pp. 10063-10070
Author(s):  
Zhaolan Zhai ◽  
Shengfeng Ye ◽  
Xinyan Yan ◽  
Zhanqian Song ◽  
Shibin Shang ◽  
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Author(s):  
Yujun Feng ◽  
Zonglin Chu ◽  
Cécile A. Dreiss

2013 ◽  
Vol 5 (13) ◽  
pp. 6247-6254 ◽  
Author(s):  
Nichola M. Kinsinger ◽  
Alexander Dudchenko ◽  
Ashley Wong ◽  
David Kisailus

2013 ◽  
Vol 172 (1) ◽  
pp. e33-e34 ◽  
Author(s):  
Haijun Yu ◽  
Xuetao Shi ◽  
Pengcheng Yu ◽  
Jianhua Zhou ◽  
Zhiwen Zhang ◽  
...  

ChemPhysChem ◽  
2012 ◽  
Vol 13 (18) ◽  
pp. 4105-4109 ◽  
Author(s):  
Jutaek Nam ◽  
Hyoseok Nam ◽  
Sungwook Jung ◽  
Sekyu Hwang ◽  
Taejun Wang ◽  
...  

Materials ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2525
Author(s):  
Hyunwook Choo ◽  
Youngmin Choi ◽  
Woojin Lee ◽  
Changho Lee

The pH-responsive polymers, such as polyacrylamide (PAM), show distinct conformational states according to the pH of their environmental groundwater. Therefore, the interactions between clay–polymer and polymer–water molecules, which determine the yield stress of bentonite–polymer composites, can be affected by the pH of groundwater. This study aims to evaluate the effect of pH variation on the yield stress of calcium bentonite treated with PAM. The yield stresses (τy) of untreated and PAM treated clays were measured with varying volume fractions of solid (VF = 10–23%) and under varying pH conditions (pH = 7.6–9.6). In addition, the zeta potential was measured for both untreated and treated clays to figure out the change in the surface charge of the mineral surface due to PAM treatment. The results of this study demonstrate that τy for treated clay is higher than that for untreated clay at a given VF, because van der Walls attraction dominates electrostatic repulsion in the case of treated clay. Due to the change in conformational states of PAM and the consequent change in surface charge that comes with varying pH, the pH-dependent change in τy of treated clay is significantly different from that of untreated clay.


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