1
|
Mohammadi S, Hemmat A, Afifi H, Mahmoudi Alemi F. Improvement of the Rheological Behavior of Viscoelastic Surfactant Fracturing Fluids by Metallic-Type Nanoparticles. ACS OMEGA 2024; 9:28676-28690. [PMID: 38973834 PMCID: PMC11223126 DOI: 10.1021/acsomega.4c03000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 06/10/2024] [Accepted: 06/12/2024] [Indexed: 07/09/2024]
Abstract
The use of nanotechnology in the field of acidizing, particularly in fracturing fluids, has garnered significant attention over the past decade. Viscoelastic surfactants (VESs) are utilized as one of the most effective fracturing fluids, possessing both elasticity and viscosity properties. These fluids are crucial additives in acidizing packages, enhancing their performance. However, various factors, such as salinity, temperature, pressure, and concentration, can sometimes weaken the efficacy of these fluids. To address this, the integration of nanoparticles has been explored to improve fluid retention in reservoirs and enhance the efficiency. This study focuses on investigating the impact of the main metallic-type nanoparticles on the rheological behavior of VES fluids. Iron oxide, magnesium oxide, and zinc oxide nanoparticles were utilized, and the microscopic-scale rheological behavior of the fluids was thoroughly evaluated. The highest performance for enhancing fluid gelation, stability, and rheological characteristics of VES fluids was found for Fe2O3 nanoparticles at an optimum concentration of 500 ppm. At this concentration and shear rate of 100 s-1, the viscosity of the fluid reached 169.61 cP. For iron oxide nanoparticles at a concentration of 500 ppm, by increasing the temperature from 25 to 85 °C, the gelation state of the fluid increased from 7 h and 50 min to 17 h and 45 min. This improvement is attributed to their high surface area and the increased density of entanglement points within the micelles, leading to a more interconnected structure with enhanced viscoelastic properties. Furthermore, iron oxide nanoparticles significantly enhance gelation by physically connecting the micelles, thereby improving stability and structure. The absorption of surfactant molecules by the nanoparticles additionally contributes to micelle reconstruction and shape alteration. The presence of iron oxide nanoparticles helps maintain the gel structure even at elevated temperatures, preventing rapid viscosity decrease. Our findings may provide new insights for development of high-performance, economical, and environment-friendly fracturing fluids used in well stimulation operations.
Collapse
Affiliation(s)
- Saber Mohammadi
- Petroleum
Engineering Department, Research Institute
of Petroleum Industry (RIPI), Tehran 14665-1998, Iran
| | - Alimohammad Hemmat
- Department
of Chemical Engineering, Isfahan University
of Technology, Isfahan 84156-83111, Iran
| | - Hamidreza Afifi
- Petroleum
Engineering Department, Research Institute
of Petroleum Industry (RIPI), Tehran 14665-1998, Iran
| | - Fatemeh Mahmoudi Alemi
- Petroleum
Engineering Department, Research Institute
of Petroleum Industry (RIPI), Tehran 14665-1998, Iran
| |
Collapse
|
2
|
Müller W, Schweins R, Nöcker B, Egold H, Hannappel Y, Huber K. SANS contrast matching for the unambiguous localization of anionic dye in cationic surfactant micelles. NANOSCALE ADVANCES 2023; 5:5367-5384. [PMID: 37767037 PMCID: PMC10521298 DOI: 10.1039/d3na00556a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023]
Abstract
Contrast variation in small-angle neutron scattering (SANS) was successfully applied to localize the anionic azo dye Blue in co-assemblies with the cationic surfactant dodecyltrimethylammoniumbromide (DTAB). For this purpose, the scattering contrast between DTAB and the aqueous solvent was eliminated by SANS contrast matching, leaving only the scattering signal from Blue to be detected. Results obtained by contrast matching were confirmed by NOESY NMR-spectroscopy, showing that Blue interacts with the positively charged DTAB head groups and with up to the 4th neighbouring methylene group of the DTAB C12-alkyl chain. Its localization in the outer layer of the Blue-DTAB co-assembly explains the uniaxial growth of spheroidal DTAB micelles to wormlike micelles with increasing [Blue] : [DTAB] ratio from 0 : 1 to 1 : 3. This is in line with the concept of the packing parameter for amphiphilic substances.
Collapse
Affiliation(s)
- Wenke Müller
- Institut Laue-Langevin, DS/LSS 71 Avenue des Martyrs 38000 Grenoble France
| | - Ralf Schweins
- Institut Laue-Langevin, DS/LSS 71 Avenue des Martyrs 38000 Grenoble France
| | - Bernd Nöcker
- KAO Germany GmbH Pfungstädter Straße 98-100 64297 Darmstadt Germany
| | - Hans Egold
- Universität Paderborn Warburger Straße 100 33098 Paderborn Germany
| | - Yvonne Hannappel
- Universität Bielefeld Universitätsstrasse 25 33615 Bielefeld Germany
| | - Klaus Huber
- Universität Paderborn Warburger Straße 100 33098 Paderborn Germany
| |
Collapse
|
3
|
Yang C, Su Z, Li Z, Yao R, Liu W, Yin H. Harvest of nisin from fermentation broth using foam separation with the assistance of ultrasonic treatment: foam property evaluation and antimicrobial activity retention. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
4
|
Ya. Zakharova L, Vasilieva EA, Mirgorodskaya AB, Zakharov SV, Pavlov RV, Kashapova NE, Gaynanova GA. Hydrotropes: solubilization of nonpolar compounds and modification of surfactant solutions. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
|
5
|
Zhang J, Li H, Xue L, Pei X, Cui Z, Song B. Rheological behavior of thread-like fiber solutions formed from a rosin-based surfactant with two head groups. SOFT MATTER 2022; 18:6694-6702. [PMID: 36017747 DOI: 10.1039/d2sm00964a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Wormlike micelles are conventional aggregates that exist in viscoelastic solutions. However, to achieve a solution with prominent viscoelasticity, rather high concentrations of surfactants are usually required due to the flexibility of aggregates in solution. If thread-like aggregates with rigidity can be formed by surfactants, the solutions are expected to show strong viscoelasticity at very low surfactant concentrations. Herein, A novel rosin-based quaternary ammonium surfactant with two head groups (abbreviated as R-11-3-DA) was synthesized. Cryogenic transmission electron microscopy (Cryo-TEM) images showed that flexible nanofibers with diameters of about 7-8 nm and lengths of over 1 μm were formed in the 1 : 1.5 R-11-3-DA : SL solutions. The rigidity of the aggregates seems to be inherited from the rigidity of the surfactant molecules. The novel aggregates endow the solutions with remarkable viscoelasticity at very low concentrations, with a critical overlap concentration of 0.01 wt% and a critical gelling concentration of 0.58 wt%. The rheological behavior of the solutions also shows excellent shear resistance and weak sensitivity to temperature below the critical gelation temperature (Tgel). This work reveals the advantages of viscoelastic solutions containing flexible nanofibers. The design principles of new molecular structures and system compositions can be applied to the preparation of smart soft materials based on the self-assembly of molecules.
Collapse
Affiliation(s)
- Jinpeng Zhang
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China.
| | - Hongye Li
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China.
| | - Linyu Xue
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China.
| | - Xiaomei Pei
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China.
| | - Zhenggang Cui
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China.
| | - Binglei Song
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China.
| |
Collapse
|
6
|
Zhou B, Kang W, Yang H, Li Z, Gao Z, Zheng Z, Jia R, He Y, Liu D, Jia H, Lekomtsev A, Dengaev A. Alkyl chain length influence of hydrotrope on the pH responsiveness of surfactant aggregates based on dynamic imine bond. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
7
|
Development of CO2-Sensitive Viscoelastic Fracturing Fluid for Low Permeability Reservoirs: A Review. Processes (Basel) 2022. [DOI: 10.3390/pr10050885] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
There are economic and technical challenges to overcome when increasing resource recovery from low permeability reservoirs. For such reservoirs, the hydraulic fracturing plan with the development of clean and less expensive fracturing fluid plays a vital aspect in meeting the energy supply chain. Numerous recent published studies have indicated that research on worm-like micelles (WLMs) based on viscoelastic surfactant (VES) fluid has progressed substantially. This study looks at the development of CO2-sensitive viscoelastic fracturing fluid (CO2-SVFF), its applications, benefits, limitations, and drawbacks of conventional fracturing fluids. The switchable viscoelasticity of CO2-SVFF system signifies how reusing of this fluid is attained. Compared to conventional surfactants, the CO2-SVFF system can be switched to high viscosity (to fracture formation and transporting proppants) and low viscosity (easy removal after causing fracture). The effect of pH, conductivity, temperature, and rheological behaviors of CO2-SVFFs are also highlighted. Further, the aid of Gemini surfactants and nanoparticles (NPs) with low concentrations in CO2-SVFF can improve viscoelasticity and extended stability to withstand high shear rates and temperatures during the fracturing process. These studies provide insight into future knowledge that might lead to a more environmentally friendly and successful CO2-SVFFs in low-permeability reservoirs. Despite the increased application of CO2-SVFFs, there are still several challenges (i.e., formation with high-temperature range, pressure, and salinity).
Collapse
|
8
|
Preparation and mechanism of pH and temperature stimulus-responsive wormlike micelles. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126788] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
9
|
Effect of aromatic acid on the rheological behaviors and microstructural mechanism of wormlike micelles in betaine surfactant. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115908] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
10
|
Larsson J, Sanchez-Fernandez A, Leung AE, Schweins R, Wu B, Nylander T, Ulvenlund S, Wahlgren M. Molecular structure of maltoside surfactants controls micelle formation and rheological behavior. J Colloid Interface Sci 2021; 581:895-904. [DOI: 10.1016/j.jcis.2020.08.116] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 08/27/2020] [Accepted: 08/28/2020] [Indexed: 12/11/2022]
|
11
|
Mpelwa M, Zheng Y, Tang S, Pu M, Jin L. Performance optimization for the viscoelastic surfactant using nanoparticles for fracturing fluids. CHEM ENG COMMUN 2020. [DOI: 10.1080/00986445.2019.1660650] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Musa Mpelwa
- School of Petroleum Engineering, Yangtze University, Wuhan, China
- Chemistry Department, Nyankumbu Secondary School, Geita, Tanzania
| | - Yahui Zheng
- School of Petroleum Engineering, Yangtze University, Wuhan, China
| | - Shanfa Tang
- School of Petroleum Engineering, Yangtze University, Wuhan, China
- Hubei Cooperative Innovation Center of Unconventional Oil and Gas, Yangtze University, Wuhan, China
| | - Mingzheng Pu
- School of Petroleum Engineering, Yangtze University, Wuhan, China
| | - Lijun Jin
- School of Petroleum Engineering, Yangtze University, Wuhan, China
| |
Collapse
|
12
|
Tsujinoue H, Kobayashi Y, Arai N. Effect of the Janus Amphiphilic Wall on the Viscosity Behavior of Aqueous Surfactant Solutions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:10690-10698. [PMID: 32804514 DOI: 10.1021/acs.langmuir.0c01359] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The effects of the chemical nature of an interface are one of the key parameters which can affect self-assembly and rheological behavior. To date, several studies have reported self-assembled structures and rheological behaviors in the development of various functional materials. In this study, we investigated the self-assembly and viscosity behavior of aqueous surfactant solutions confined in three types of Janus amphiphilic nanotubes (JANTs), which have two, four, and eight sequential domains, respectively, using molecular simulation. We found that the viscosity behavior depends on the surfactant concentration and the chemical nature of the wall surface. For instance, although the concentration levels of the surfactants are the same (c = 10%), completely different viscosity behaviors were observed in the two sequential domains (Newtonian-like) and the four and eight sequential domains (strong shear-thinning) of the JANTs. Our simulations demonstrated how the rheological properties of aqueous surfactant solutions, including viscosity and velocity profiles, can be controlled by the chemical nature of the JANT wall surface, effect of confinement, and their self-assembly structures. Considering the foregoing, we hope that our study offers new knowledge on nanofluid systems.
Collapse
Affiliation(s)
- Hiroaki Tsujinoue
- Department of Mechanical Engineering, Keio University, Yokohama 223-8522, Japan
| | - Yusei Kobayashi
- Department of Mechanical Engineering, Keio University, Yokohama 223-8522, Japan
| | - Noriyoshi Arai
- Department of Mechanical Engineering, Keio University, Yokohama 223-8522, Japan
| |
Collapse
|
13
|
Kang W, Zhu T, Wang P, Hou X, Zhao Y, Zhang X, Yang H. A pH-responsive anionic wormlike micelle based on ion release effect of phosphate. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.110946] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
14
|
Nanostructured hybrid fluids of amphiphilic diblock copolymers and surfactant worm-like micelles complexes. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.01.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
15
|
Xu J, Xie H, Zhang H, Xu H, Fang L, Zhao W, Wu Y. New insight into the transition mechanism of pH-tunable wormlike micelles based on experiments and DPD simulation. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2018.12.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
16
|
|
17
|
Kang W, Zhao Y, Wang P, Li Z, Hou X, Huang Z, Yang H. Rheological behavior and mechanism of pH-responsive wormlike micelle variations induced by isomers of phthalic acid. SOFT MATTER 2018; 14:4445-4452. [PMID: 29693695 DOI: 10.1039/c8sm00467f] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Responsive wormlike micelles (WLMs) constructed by different carboxylic acids are fascinating. However, it is unknown how the position of the carboxylic groups alters the stimuli-response of wormlike micellar systems. Herein, three pH-responsive WLMs based on Gemini-like surfactants (named o-EAPA, m-EAPA, and p-EAPA) were formed and studied through the complexation of N-erucamidopropyl-N,N-dimethylamine (UC22AMPM) and o-phthalic acid (o-PA), m-phthalic acid (m-PA), or p-phthalic acid (p-PA) at the molar ratio of 2 : 1. The viscoelasticity, phase behavior and aggregate microstructure were separately explored by rheological, appearance observation and cryo-TEM methods. The results show that all phthalic acids can protonate UC22AMPM, thereby forming WLMs. However, with the shorter spacer distance between two carboxyl groups in phthalic acid, o-EAPA exhibits the longer length scale of aggregates and a more efficient thickening ability compared to the other two systems. Similar results in the N,N-dimethyl oleoaminde-propylamine (DOAPA) and o-PA, m-PA, and p-PA systems further verify the applicability of this mechanism. Furthermore, the phthalic acid based WLMs are found to exhibit intriguing reversible pH-responsive behaviors, which include promptly switching between a high elastic system and a low viscosity fluid by pH control. The o-EAPA system possesses a larger viscosity maximum, which produces more precipitous viscosity changes as the pH varies. This study is beneficial for the formation of pH-responsive WLMs and to determine their advantages for applications.
Collapse
Affiliation(s)
- Wanli Kang
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China.
| | | | | | | | | | | | | |
Collapse
|
18
|
Wang P, Kang W, Yang H, Zhao Y, Yin X, Zhu Z, Zhang X. The N-allyl substituted effect on wormlike micelles and salt tolerance of a C 22-tailed cationic surfactant. SOFT MATTER 2017; 13:7425-7432. [PMID: 28967008 DOI: 10.1039/c7sm01322a] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Wormlike micelles (WLMs) have been observed in a wide variety of cationic surfactants. Here we developed WLMs based on an N-allyl substituted cationic surfactant with an unsaturated C22-tail, N-erucamidopropyl-N,N-dimethyl-N-allyl-ammonium bromide (EDAA), and compared them with UC22AMPM at the same concentration. The viscoelasticity, aggregate microstructure and salt tolerance of EDAA solutions were investigated by rheology, surface tension and Cryo-TEM measurements. It was found that EDAA exhibited a higher viscosity and a high salt tolerance. Upon increasing the concentration of NaCl, the viscosity of wormlike micelles in the solutions continuously increased and reached ∼1.10 × 106 mP s at 200 mM. On further increasing the NaCl concentration to 2000 mM, the viscosity remained at ∼106 mP s without any reduction. But the viscosity of UC22AMPM solutions showed a drastic change with the increase of NaCl concentration. This drastic variation in rheological behavior is attributed to the presence of the N-allyl substituent. Besides, the EDAA also shows some advantages such as low overlapping concentration(∼2.2 mM) and stable viscosity over the whole pH range.
Collapse
Affiliation(s)
- Pengxiang Wang
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, P. R. China.
| | | | | | | | | | | | | |
Collapse
|
19
|
Padasala S, Chavda S, Ray D, Aswal VK, Bahadur P. The effect of glycols and their ethers on micellar behavior of cetyltrimethylammonium tosylate. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.07.044] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
20
|
Chavda S, Danino D, Aswal V, Singh K, Marangoni D, Bahadur P. Microstructure and transitions in mixed micelles of cetyltrimethylammonium tosylate and bile salts. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2016.10.047] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
21
|
Padasala S, Patel V, Singh K, Ray D, Aswal V, Bahadur P. Effect of polymers on worm-like micelles of cetyltrimethylammonium tosylate. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.04.064] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
22
|
Jia K, Hu J, Dong J, Li X. Light-responsive multillamellar vesicles in coumaric acid/alkyldimethylamine oxide binary systems: Effects of surfactant and hydrotrope structures. J Colloid Interface Sci 2016; 477:156-65. [PMID: 27262081 DOI: 10.1016/j.jcis.2016.05.046] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Revised: 05/22/2016] [Accepted: 05/23/2016] [Indexed: 11/24/2022]
Abstract
Herein, we report a series of novel light-responsive multilamellar vesicles based on the surfactant/hydrotrope binary systems. The phase behaviors of alkyldimethylamine oxide (CmDMAO, m=10, 12, 14) and trans-coumaric acid (trans-CA) isomerides, including trans-ortho-coumaric acid (trans-OCA), trans-meta-coumaric acid (trans-MCA) and trans-para-coumaric acid (trans-PCA), show that the multilamellar vesicle (MLV) formation region is commonly presented in the trans-CA/CmDMAO systems except trans-PCA/C12DMAO. Moreover, the molecular structures of CmDMAO and trans-CA affect the multilamellar vesicle formation region significantly. Generally speaking, the bigger the m, the larger the MLV region. Various techniques such as rheology, polarized optical microscopy (POM), (1)H NMR, (2)H NMR, cryogen transmission electron microscopy (cryo-TEM) and freeze-fracture transmission electron microscopy (FF-TEM) are used to characterize the aggregate structures. The multilamellar vesicles can transform into a homogeneous and transparent micelle phase or a two-phase system in the trans-OCA/CmDMAO binary systems under UV light irradiation, which depends on the chain length of CmDMAO and the molar ratio of [trans-OCA]/[CmDMAO]. Specifically, the light-stimuli response of multilamellar vesicles in the trans-OCA/C12DMAO system is representatively studied in detail. UV-vis spectra and (1)H NMR measurements illustrate that the light-induced trans-OCA to cis-OCA isomerization is essential during the transitions and the light-induced two-phase formation is attributed to the enrichment of surfactants, because the trans-cis isomerization can not only strengthen the hydrophilicity of cis-OCA but also increase the steric hindrance between cis-OCA and C12DMAO, and thereby altering the morphology of aggregate and the rheological response of bulk phase significantly.
Collapse
Affiliation(s)
- Kangle Jia
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
| | - Junwen Hu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
| | - Jinfeng Dong
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
| | - Xuefeng Li
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China.
| |
Collapse
|
23
|
Xia Z, Jia K, Li X, Dong J. Light-responsive fluids based on reversible wormlike micelle to rodlike micelle transitions. RSC Adv 2016. [DOI: 10.1039/c6ra05529j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
A new family of rheological responsive fluids based on azobenzene surfactant and 5-methyl salicylic acid binary mixtures is developed due to the light-induced reversible transitions between wormlike micelles and rodlike micelles.
Collapse
Affiliation(s)
- Zhiyu Xia
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- PR China
| | - Kangle Jia
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- PR China
| | - Xuefeng Li
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- PR China
| | - Jinfeng Dong
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- PR China
| |
Collapse
|