pH-Responsive wormlike micelles (WLMs) have attracted lots of attention due to their abundant advantages, for example, ease of adjustment and strong reversibility. We have learned that the degree of protonation of diethylenetriamine (DETA) varies with pH, and the anionic sodium dodecyl sulfate (SDS) can connect with cationic groups. Inspired by this, a novel pH-responsive WLMs was prepared based on noncovalent electrostatic interaction with sodium dodecyl sulfate (SDS) and DETA at a molar ratio of 3:1. Properties of the SDS/DETA system were assessed from the aspects of rheology, macro-morphology, aggregates diameter, and micro-morphology. When the pH decreased from 9.98 to 6.80, the SDS/DETA system represented as a weak gel with the viscosity increasing from 7.6 mPa s to 1.4 × 103 mPa·s and the average hydrodynamic radius increasing from 5.6 to 91.3 nm. The phenomenon is attributed to the protonation of DETA when reducing the pH and the formation of WLMs based on electrostatic interaction between DETA and SDS. However, when pH was further reduced by adding HCl, the SDS/DETA system would reach its isoelectric point, thus the solution became turbid with low viscosity. The SDS/DETA solution represents excellent reversibility (at least three cycles) in viscoelasticity by adjusting the pH value, and such pH-responsive WLM holds significant potential for broader applications in biomedical, oilfield chemistry, and other fields.
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November 2023
Research Article|
November 08 2023
A novel pH-responsive wormlike micelles combinated sodium dodecyl sulfate (SDS) and diethylenetriamine (DETA) based on noncovalent electrostatic interaction
Bobo Zhou (周博博);
Bobo Zhou (周博博)
(Methodology, Project administration, Resources, Writing – original draft, Writing – review & editing)
1
Key Laboratory of Unconventional Oil and Gas Development, China University of Petroleum (East China), Ministry of Education
, Qingdao 266580, People's Republic of China
2
School of Petroleum Engineering, China University of Petroleum (East China)
, Qingdao 266580, People's Republic of China
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Hongbin Yang (杨红斌)
;
Hongbin Yang (杨红斌)
a)
(Data curation, Formal analysis, Funding acquisition)
1
Key Laboratory of Unconventional Oil and Gas Development, China University of Petroleum (East China), Ministry of Education
, Qingdao 266580, People's Republic of China
2
School of Petroleum Engineering, China University of Petroleum (East China)
, Qingdao 266580, People's Republic of China
a)Author to whom correspondence should be addressed: [email protected]
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Xinxin Li (李欣欣);
Xinxin Li (李欣欣)
(Methodology, Visualization)
3
Shengli Oilfield Branch of Sinopec
, Dongying 257000, People's Republic of China
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Zhe Li (李哲)
;
Zhe Li (李哲)
(Writing – original draft, Writing – review & editing)
4
National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology
, Xuzhou 221116, People's Republic of China
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Sarsenbekuly Bauyrzhan
;
Sarsenbekuly Bauyrzhan
(Methodology, Writing – review & editing)
2
School of Petroleum Engineering, China University of Petroleum (East China)
, Qingdao 266580, People's Republic of China
5
School of Energy and Petroleum Industry, Kazakh-British Technical University
, Almaty 050000, Kazakhstan
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Wanli Kang (康万利)
;
Wanli Kang (康万利)
(Formal analysis, Funding acquisition, Methodology, Supervision)
1
Key Laboratory of Unconventional Oil and Gas Development, China University of Petroleum (East China), Ministry of Education
, Qingdao 266580, People's Republic of China
2
School of Petroleum Engineering, China University of Petroleum (East China)
, Qingdao 266580, People's Republic of China
5
School of Energy and Petroleum Industry, Kazakh-British Technical University
, Almaty 050000, Kazakhstan
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Jingjing Shen (沈静静);
Jingjing Shen (沈静静)
(Methodology, Software)
1
Key Laboratory of Unconventional Oil and Gas Development, China University of Petroleum (East China), Ministry of Education
, Qingdao 266580, People's Republic of China
2
School of Petroleum Engineering, China University of Petroleum (East China)
, Qingdao 266580, People's Republic of China
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Changyuan Ning (宁长元);
Changyuan Ning (宁长元)
(Formal analysis, Methodology, Writing – review & editing)
1
Key Laboratory of Unconventional Oil and Gas Development, China University of Petroleum (East China), Ministry of Education
, Qingdao 266580, People's Republic of China
2
School of Petroleum Engineering, China University of Petroleum (East China)
, Qingdao 266580, People's Republic of China
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Xiaoke Yang (杨小珂)
Xiaoke Yang (杨小珂)
(Data curation, Methodology)
1
Key Laboratory of Unconventional Oil and Gas Development, China University of Petroleum (East China), Ministry of Education
, Qingdao 266580, People's Republic of China
2
School of Petroleum Engineering, China University of Petroleum (East China)
, Qingdao 266580, People's Republic of China
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a)Author to whom correspondence should be addressed: [email protected]
Physics of Fluids 35, 117110 (2023)
Article history
Received:
September 11 2023
Accepted:
October 19 2023
Citation
Bobo Zhou, Hongbin Yang, Xinxin Li, Zhe Li, Sarsenbekuly Bauyrzhan, Wanli Kang, Jingjing Shen, Changyuan Ning, Xiaoke Yang; A novel pH-responsive wormlike micelles combinated sodium dodecyl sulfate (SDS) and diethylenetriamine (DETA) based on noncovalent electrostatic interaction. Physics of Fluids 1 November 2023; 35 (11): 117110. https://doi.org/10.1063/5.0176124
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