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Hu Y, Chen Y, Cai Z, Lei S, Guo R. Unusual Increasing Viscoelasticity of Wormlike Micelles Composed of Imidazolium Gemini Surfactants with Temperature. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:7143-7153. [PMID: 37162499 DOI: 10.1021/acs.langmuir.3c00574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The viscoelasticity of wormlike micelles composed of ionic surfactants typically shows an exponential decrease with increasing temperature, which limits their application in relatively high-temperature (>90.0 °C) oilfields and the synthesis of functional materials as supramolecular templates at high temperatures. In this work, a series of imidazolium gemini surfactants, 1,9-(ethane-1,2-diyl)bis(3-alkyl-1H-imidazol-3-ium) bromide ([Cn-2-Cnim]Br2, n = 12, 14, 16, 18, 20), were synthesized. Their surface activities and aggregation behaviors in water were studied by electrical conductivity, rheology, polarization optical microscopy, small-angle X-ray scattering, ζ potential, and hydrogen nuclear magnetic resonance measurements. [C12-2-C12im]Br2 and [C14-2-C14im]Br2 mainly precipitate in water. [Cn-2-Cnim]Br2 (n = 16, 18, 20) forms lamellar liquid crystals over a large range of concentrations at low temperatures. With the increase of temperature, the lamellar liquid crystals transit to wormlike micelles. Interestingly, the viscoelasticity of the three wormlike micelles first increases to the maximum and then decreases with increasing temperature. These wormlike micelles without additives retain high viscoelasticity up to 90.0 °C or above. With the increase of the alkyl chain length of the surfactants, the transition temperature of lamellar liquid crystal to wormlike micelles and the disintegration temperature of wormlike micelles increase. The unusual increase of the viscoelasticity of wormlike micelles was due to the desorption of weakly bound counterions and the extension of the long hydrophobic chains of surfactants at high temperatures.
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Affiliation(s)
- Yimin Hu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Yu Chen
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Zixian Cai
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Shaoan Lei
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Rong Guo
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
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2
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Cai Z, Lei S, Hu Y, Chen Y, Shen M, Lei M. Iron doped BiOBr loaded on carbon spheres for improved visible-light-driven detoxification of 2-chloroethyl sulfide. Dalton Trans 2023; 52:3040-3051. [PMID: 36779551 DOI: 10.1039/d2dt03666e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
In this study, flower-like porous iron doped bismuth oxybromide on porous activated carbon visible light catalysts (BiOBr/Fe@AC) were prepared by a reactive imidazole ionic liquid surfactant assisted solvothermal process. The morphologies, structures, optical properties and photocatalytic properties were investigated in detail. The morphology of the synthesized Fe doped BiOBr composites gradually changed from a regular spherical shape to a non-specific shape with the increase of the alkyl chain length of the ionic liquid surfactants. The photocurrent of BiOBr/Fe@AC composites is greatly influenced by the content of Fe, the type of carbon sphere and the size of the composites. The photocatalytic activity of the obtained BiOBr/Fe@AC composites was evaluated by the degradation of 2-chloroethyl sulfide (CEES) under visible light. The BiOBr/Fe@AC composites exhibited significantly enhanced photocatalytic performance compared to that of pure BiOBr and the 10.0% Fe doped BiOBr/Fe@AC composite displayed the highest photocatalytic activity. The main active species were determined to be holes and superoxide radicals by electron spin resonance (ESR) analysis and free radical trapping experiments. The introduction of iron can improve the separation and transfer rate of photoinduced charges. Carbon spheres can enhance light harvesting, improve electron transfer and increase the number of catalytic active sites. Iron and carbon embellishment is an effective strategy to enhance the photocatalytic efficiency of BiOBr. Finally, a possible photocatalytic mechanism of BiOBr/Fe@AC has been proposed.
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Affiliation(s)
- Zixian Cai
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, P. R. China. .,School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu, 225002, P. R. China.
| | - Shaoan Lei
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu, 225002, P. R. China.
| | - Yimin Hu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu, 225002, P. R. China.
| | - Yu Chen
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu, 225002, P. R. China.
| | - Ming Shen
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu, 225002, P. R. China.
| | - Meiling Lei
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, P. R. China.
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3
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Wu Y, Xing W, Wen J, Wu Z, Zhang Y, Zhang H, Wu H, Yao H, Xue H, Gao J. Mixed solvent exchange enabled high-performance polymeric gels. POLYMER 2023. [DOI: 10.1016/j.polymer.2022.125661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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4
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Liu W, Wang Y, Tan Y, Ye Z, Chen Q, Shang Y. pH and light dual stimuli-responses of mixed system of 2-hydroxyl-propanediyl-α,ω-bis(dimethyldodecyl ammonium bromide) and trans-ortho-hydroxyl cinnamic acid. RSC Adv 2022; 12:34601-34613. [PMID: 36545609 PMCID: PMC9714207 DOI: 10.1039/d2ra05098f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 10/18/2022] [Indexed: 12/03/2022] Open
Abstract
Stimuli-responsive smart supramolecular self-assembly with controllable morphology and adjustable rheological property has attracted widespread concern of scientists in recent years due to the great potential application in microfluidics, controlled release, biosensors and so on. In this study, a pH and UV light dual stimuli-responsive system was constructed by combining Gemini surfactant 2-hydroxyl-propanediyl-α,ω-bis(dimethyldodecyl ammonium bromide) (12-3(OH)-12·2Br-) with trans-ortho-hydroxyl cinnamic acid (trans-OHCA) in aqueous solution. The phase behavior and stimuli-responsive behavior of the system including the microstructural transition, rheological property, intermolecular interaction, and isomerization reaction were explored by various experiment techniques such as rheometer, UV-vis spectrum, polarized optical microscopy (POM), transmission electron microscopy (TEM), dynamic light scattering (DLS) as well as theoretical calculation. The system displays abundant phase behaviors that supramolecular self-assemblies of different morphologies in different states such as spherical micelle, wormlike micelle, lamellar liquid crystal, and aqueous two phase system (ATPS) were observed even at lower concentration, which provide the research basis on the abundant stimuli-responsiveness of the system. The results prove that the multiple ionization and the photo-isomerization of trans-OHCA endow the system with plentiful responses to pH and UV light stimuli. It is expected that this study on the dual stimuli-responsive system with abundant self-assembly behaviors and adjustable rheological behaviors would be of theoretical and practical importance, which would provide essential guidance in designing and constructing smart materials with multiple stimuli-responses.
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Affiliation(s)
- Wenxiu Liu
- School of Materials and Chemical Engineering, Anhui Jianzhu UniversityHefei 230601AnhuiChina
| | - Yaqin Wang
- School of Materials and Chemical Engineering, Anhui Jianzhu UniversityHefei 230601AnhuiChina,Functional Membrane Laboratory, School of Chemistry and Material Science, University of Science and Technology of ChinaHefei 230026AnhuiChina,Shandong Tianwei Membrane Technology Co., Ltd, Binhai Economic and Technological Development AreaWeifang 262737ShandongChina
| | - Yue Tan
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering, East China University of Science and TechnologyShanghai 200237China
| | - Zhicheng Ye
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering, East China University of Science and TechnologyShanghai 200237China
| | - Qizhou Chen
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering, East China University of Science and TechnologyShanghai 200237China
| | - Yazhuo Shang
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering, East China University of Science and TechnologyShanghai 200237China
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5
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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.
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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.
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6
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Sabah CK, Yalçın B, Şimşek C, Gürsel YH, Erbil C. Improved mechanical properties of antimicrobial poly( N-[3-(dimethylaminopropyl)] methacrylamide) hydrogels prepared by free radical polymerization in the presence of cetyltrimethylammonium bromide as a lyotropic liquid crystal template. SOFT MATTER 2022; 18:4156-4166. [PMID: 35583255 DOI: 10.1039/d2sm00186a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The poor mechanical strength of the poly(N-[3-(dimethylamino)propyl] methacrylamide) (PDMAPMAAm) hydrogel limits its application as a drug delivery system and antimicrobial agent. In this study, both its morphology and antibacterial effectiveness were controlled through free radical solution polymerization in the presence of cetyltrimethylammonium bromide (CTAB; cationic nonreactive surfactant), forming lyotropic liquid crystal (LLC) mesophases. All the templated reactions proceeded in four different CTAB concentrations with three different concentrations of DMAPMAAm (2.0, 3.0 and 4.0 mol L-1), which were carried out in distilled-deionized water (DDW) using potassium persulfate (KPS) and N,N'-methylenebisacrylamide (BIS) as the initiator and crosslinker, respectively. The pH-dependent phase transition temperature (34 °C at pH 14), compression moduli, antibacterial and diffusion properties, and the effect of the LLC mesophases of CTAB on the hydrogel properties were investigated by mechanical measurements, image analysis, inhibition zone tests, X-ray diffractograms and polarized optical microscopy (POM). It was found that the compression moduli of the templated (T)-PDMAPMAAm hydrogels increased by nearly ten times (from ∼3.0 to 30.0 kPa) compared to that of the isotropic (I) ones. The POM and XRD results before the removal of CTAB exhibited the formation of lamellar and hexagonal mesophases. Further, the inhibition zones showed the ability of the I-PDMAPMAAm hydrogels to reduce the activity of E. coli even in the absence of CTAB, gentamicin (GS) and ciprofloxacin (CF). This was because the quaternary ammonium (QA) groups on the DMAPMAAm units could interact with the bacterial membrane.
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Affiliation(s)
- Cansu Kozbekci Sabah
- Chemistry Department, Istanbul Technical University, Maslak, Istanbul 34469, Turkey.
| | - Bestenur Yalçın
- Department of Molecular Biology and Genetics, Faculty of Engineering and Natural Sciences, Bahcesehir University, Besiktas, Istanbul 34353, Turkey
| | - Ceyda Şimşek
- Chemistry Department, Istanbul Technical University, Maslak, Istanbul 34469, Turkey.
| | - Yeşim H Gürsel
- Chemistry Department, Istanbul Technical University, Maslak, Istanbul 34469, Turkey.
| | - Candan Erbil
- Chemistry Department, Istanbul Technical University, Maslak, Istanbul 34469, Turkey.
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7
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Lei M, Sun J, Chen Y, Cai Z, Hu Y. The effect of alkyl chain length of the imidazole ionic liquid surfactants on the improving lubricating properties of the hexagonal lyotropic liquid crystal composed of the [C16imCn]Br/hydrotalcite/H2O. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118918] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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8
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Hu K, Ouyang M, Jiang Q, Zhang H, Kong M, Wang G, Zhuang L. Experimental and DFT studies on micellization features of anionic surface active ionic liquid and nonionic surfactant mixtures: Effect of imidazolium cations. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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9
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Hu Y, Chen Y, Cai Z, Jin X, Fan L, Han J, Guo R. Brij 30 Induced Transition of Rodlike Micelles to Wormlike Micelles and Gels in the Imidazole Ionic Liquid Surfactants: The Alkyl Chain Length Effect. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:3051-3063. [PMID: 35226483 DOI: 10.1021/acs.langmuir.1c02602] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The effect of the hydrocarbon chain length of ionic liquid surfactants 1-hexadecyl-3-alkyl imidazolium bromide [C16imCn]Br (n = 1-16) on their aggregation behavior with polyoxyethylene lauryl ether (Brij 30) in aqueous solution was inspected. The rheological behavior, thermal properties, and microstructures of the different samples were studied using freeze-fractured electron microscopy. The interactions between [C16imCn]Br and Brij 30 were studied using nuclear magnetic resonance spectroscopy and theoretical simulation. With the addition of Brij 30, the rodlike micelles of [C16imCn]Br (n = 1, 2, 4, and 6) transition into wormlike micelles. The effects of the molar ratio of Brij 30 and [C16imCn]Br and the hydrocarbon chain length of [C16imCn]Br on the Brij 30/[C16imCn]Br (n = 1, 2, 4, and 6) wormlike micelles were studied. When Brij 30 was mixed with the rodlike micelles of [C16imC8]Br, the Brij 30/[C16imC8]Br mixtures form wormlike micelles at low Brij 30 concentration and gels at high Brij 30 concentration. The [C16imCn]Br (n = 10, 12, 14, and 16) rodlike micelles were induced by Brij 30 to turn into the Brij 30/[C16imCn]Br gels. The effect of the [C16imCn]Br hydrocarbon chain length on their rodlike micelles with the addition of Brij 30 is also theoretically discussed.
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Affiliation(s)
- Yimin Hu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Yu Chen
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Zixian Cai
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Xiaolan Jin
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Lei Fan
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Jie Han
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Rong Guo
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
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10
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Imidazole-based surface-active gelator: Thermo responsive gel-to-gel transition of 1-hexadecyl-3-methyl imidazolium salicylate for multidimensional applications. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117773] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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11
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The transition of rodlike micelles to wormlike micelles of an ionic liquid surfactant induced by different additives and the template-directed synthesis of calcium oxalate monohydrate to mimic the formation of urinary stones. Colloid Polym Sci 2021. [DOI: 10.1007/s00396-021-04919-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Du H, Wang X. Lamellar crystalline networks in the gel-like phase of potassium stearate-stearic acid-water. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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13
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Hu K, Zhang H, Kong M, Qin M, Ouyang M, Jiang Q, Wang G, Zhuang L. Effect of alkyl chain length of imidazolium cations on foam properties of anionic surface active ionic liquids: Experimental and DFT studies. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117197] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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14
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Wang F, Zhang Z, Wei Y, Zhou T, Wang X, Zhang G. Rheology study of wormlike micellar solution formed by 1-hexadecyl-3-methylimidazolium tetrafluoroborate ionic liquids in present of sodium salicylate. J DISPER SCI TECHNOL 2021. [DOI: 10.1080/01932691.2020.1775636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Fang Wang
- College of Science, China University of Petroleum, Qingdao, P. R. China
| | - Zhiqing Zhang
- College of Science, China University of Petroleum, Qingdao, P. R. China
| | - Ying Wei
- College of Science, China University of Petroleum, Qingdao, P. R. China
| | - Ting Zhou
- College of Science, China University of Petroleum, Qingdao, P. R. China
| | - Xiufeng Wang
- College of Science, China University of Petroleum, Qingdao, P. R. China
| | - Guodong Zhang
- College of Science, China University of Petroleum, Qingdao, P. R. China
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15
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Cao H, Xu W, Guo X. The wormlike micelles formed using an ionic liquid surfactant and polar organic solvents at low temperature without additives and their lubricant properties. SOFT MATTER 2021; 17:1437-1444. [PMID: 33326550 DOI: 10.1039/d0sm01825b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Wormlike micelles (or reverse wormlike micelles) are flexible cylindrical chains that are normally formed in water (or a nonpolar organic solvent) at 25.0 °C or above; the formation of wormlike micelles at lower temperatures is rare. Here, we have reported wormlike micelles formed at low temperature using an ionic liquid surfactant (1-octadecyl-3-nonyl imidazolium bromide) in polar organic solvents (including 1,3-propanediol, 1,2-propylene glycol, N,N-dimethylformamide, and glycerol/1,2-propylene glycol mixture) in the absence of any additives. The viscoelasticity and morphology of the wormlike micelles were studied using rheology, small-angle X-ray scattering, and cryo-transmission electron microscopy. The viscoelastic properties of the wormlike micelles in polar solvents are affected by the solvent type (or the weight ratio of glycerol to 1,2-propylene glycol), surfactant concentration, and temperature. Moreover, the G' and G'' crossover twice in the dynamic curves, which is different from the case in water. The first crossover (at low frequency) corresponds to the relaxation time for the alkyl chains to disentangle from the transient network, and the second crossover (at high frequency) is related to the segmental motion of the chains. Furthermore, the tribological performance of these wormlike micelles is investigated at low temperature. It is found that the protective film (formed by the physical adhesion of the wormlike micelles on the surface of friction disk pair) and the tribochemical reaction together lead to good antifriction and antiwear performance, which indicates the application prospects of these wormlike micelles in low-temperature lubrication.
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Affiliation(s)
- Huijiao Cao
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China.
| | - Wenlin Xu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China.
| | - Xia Guo
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China.
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16
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Cao H, Hu Y, Xu W, Wang Y, Guo X. Recent progress in the assembly behavior of imidazolium-based ionic liquid surfactants. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114354] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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17
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Peng YY, Liao YF, Gan W, Tong QX, Yuan QH. Hydroxyl group modifies aggregation behavior of a non-ionic hydro-fluorocarbon hybrid surfactant by disrupting interfacial water. CHINESE J CHEM PHYS 2020. [DOI: 10.1063/1674-0068/cjcp2006092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Ying-ying Peng
- Flexible Printed Electronics Technology Center, and School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
- Department of Chemistry, and Key Laboratory for Preparation and Application of Ordered Structural Material of Guangdong Province, Shantou University, Shantou 515063, China
| | - Yi-fan Liao
- Department of Chemistry, and Key Laboratory for Preparation and Application of Ordered Structural Material of Guangdong Province, Shantou University, Shantou 515063, China
| | - Wei Gan
- Flexible Printed Electronics Technology Center, and School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Qing-xiao Tong
- State Key Laboratory of Advanced Welding and Joining, and School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Qun-hui Yuan
- State Key Laboratory of Advanced Welding and Joining, and School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
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18
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Hu Y, Han J, Guo R. Influence of the Alkyl Chain Length of the Imidazole Ionic Liquid-Type Surfactants on Their Aggregation Behavior with Sodium Dodecyl Sulfate. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:10494-10503. [PMID: 32787020 DOI: 10.1021/acs.langmuir.0c01673] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The influence of the alkyl chain length of the ionic liquid surfactants 1-hexadecyl-3-alkyl imidazolium bromide [C16imCn]Br (n = 2-16) on their aggregation behavior with sodium dodecyl sulfate (SDS) in water was studied. The rheological properties, thermostability, and microstructure of the samples were characterized via a combination of rheology, cryo-transmission electron microscopy, polarization optical microscopy, and small-angle X-ray scattering. Upon the addition of SDS, the [C16imCn]Br (n = 2, 4, 6) rodlike micelles transit into the gels with high water content. The effects of molar ratio and alkyl chain length on the viscoelasticity and thermal stability of the SDS/[C16imCn]Br (n = 2, 4, 6) gels were studied. However, the [C16imCn]Br (n = 8, 10, 12, 14, 16) rodlike micelles precipitate with the addition of SDS. The [C16imCn]Br (n = 10, 12, 14, 16) gels transit to the rodlike micelles with the proper addition of SDS. The mechanism of the influence of the alkyl chain length of the [C16imCn]Br on their aggregation behavior with SDS was proposed.
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Affiliation(s)
- Yimin Hu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Jie Han
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Rong Guo
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
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19
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Torres MD, Corchero R, Rodríguez-Escontrela I, Soto A, Moreira R. Thermo‐Rheology of a Proline‐Based Surface‐Active Ionic Liquid: Mixtures with Water and
n
‐Octane. Chem Eng Technol 2019. [DOI: 10.1002/ceat.201800269] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- María Dolores Torres
- Universidade de Santiago de CompostelaDepartment of Chemical Engineering rúa Lope Gómez de Marzoa 15782 Santiago de Compostela Spain
| | - Raquel Corchero
- Universidade de Santiago de CompostelaDepartment of Chemical Engineering rúa Lope Gómez de Marzoa 15782 Santiago de Compostela Spain
| | - Iria Rodríguez-Escontrela
- Universidade de Santiago de CompostelaDepartment of Chemical Engineering rúa Lope Gómez de Marzoa 15782 Santiago de Compostela Spain
| | - Ana Soto
- Universidade de Santiago de CompostelaDepartment of Chemical Engineering rúa Lope Gómez de Marzoa 15782 Santiago de Compostela Spain
| | - Ramón Moreira
- Universidade de Santiago de CompostelaDepartment of Chemical Engineering rúa Lope Gómez de Marzoa 15782 Santiago de Compostela Spain
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Thermodynamic insights and molecular environments into catanionic surfactant systems: Influence of chain length and molar ratio. J Colloid Interface Sci 2019; 548:77-87. [PMID: 30981965 DOI: 10.1016/j.jcis.2019.04.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 04/05/2019] [Accepted: 04/07/2019] [Indexed: 01/09/2023]
Abstract
HYPOTHESIS Imidazolium-based Ionic liquids as new generation cationic surfactants can provide designable alkyl chain length. In the catanionic surfactant systems, the alkyl chain lengths and molar ratios can greatly influence the interactions such as electrostatic and hydrophobic interaction. The variation in these interactions has a significant effect on the molecular environments of the self-assembly structure, and this process is always accompanied by the transition of aggregates and release or consumption of heat. Hence, it is of interest to study the relationship between intermolecular interactions, molecular environments, self-assembly structure and the change in energy of system in the catanionic surfactant mixed systems. EXPERIMENTS The enthalpy change ΔH of titrations the imidazolium-based into SDS micelle solution was studied to characterize the heat by using isothermal titration calorimetry (ITC) during the transitions of the aggregate structures. The corresponding self-assembly structure was monitored via cryogenic transmission electron microscopy (cryo-TEM). Employing proton magnetic resonance (1H NMR), we focus on the interactions between imidazolium-based ILs and SDS based on the variations in the molecular environments of aggregates. FINDINGS Of these imidazolium-based ionic liquids/SDS system, the 1-octyl-3-methylimidazolium ([OMIM]Cl)/SDS system shows several features such as intense energy absorption and releasing processes, which indicate the formation of high entanglement wormlike micelles and vesicles. This is related to the formation of self-adjusting state between the SDS and [OMIM]Cl molecules due to the balance between the electrostatic interaction and hydrophobic interaction. Varying the alkyl chain length appears to cause significant differences to the molecular environments. From the molecular environments, three different models about the polarity of the catanionic surfactant molecules are used to explain the balance of the intermolecular interactions.
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Wei D, Ge L, Guo R. Effect of hydrophilically modified ibuprofen on thermoresponsive gelation of pluronic copolymer. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.05.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Gao J, Li K, Xu J, Zhang W, Ma J, Liu L, Sun Y, Zhang H, Li K. Unexpected Rheological Behavior of a Hydrophobic Associative Shellac-Based Oligomeric Food Thickener. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:6799-6805. [PMID: 29878772 DOI: 10.1021/acs.jafc.8b01148] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Sodium shellac constituted of a "surfactant" monomer, which is sensitive to shear stress, exhibits shear-thickening behavior at a low concentration (5 wt %), and reacts with H+ to retain transient high viscosity under shear, is introduced in this study. The steady shear flow test proved that, under a high shear rate, sodium shellac suspension could change from Newtonian fluid to continuous shear-thickening non-Newtonian fluid. The dynamic oscillation test suggested that the sodium shellac solution at low concentrations (0.1 and 1 wt %) under a low shear rate behaved as the viscous fluid ( G″ > G'), and the solution at high concentrations (5, 10, and 15 wt %) behaved as the elastic fluid ( G″ < G'). Moreover, a high shear rate caused a cross-linking point between the G″ and G' curve. At a low concentration, it could be the sol-gel point. At a high concentration, it could be the gel-sol point. All of these transforming points were related to the interaction between the sodium clusters. This interaction should be the hydrophobic association between the particles. To prove the assumption, hydrophilic polymer poly(ethylene oxide) (PEO) was employed as the disrupting factor to the hydrophobic association. As expected, the shear-thickening behavior vanished after mixing with PEO, which verified our assumption. On the other hand, the high viscosity of the suspension under shear could be retained by reaction with H+ to solidify the transient hydroclusters under shear. Meanwhile, sodium shellac had great potential as the functional shear thickener, which could modify the rheological property of the polymer with carboxyl groups, e.g., pectin, alginate, or poly(acrylic acid). Thus, this natural and green thicker has great potential in food, medical gel, green adhesive, or cosmetic products.
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Affiliation(s)
- Jianan Gao
- Research Institute of Resources Insects , Chinese Academy of Forestry , Kunming , Yunnan 650224 , People's Republic of China
- Faculty of Chemical Engineering and Technology , Kunming University of Science and Technology , Kunming , Yunnan 650224 , People's Republic of China
| | - Kun Li
- Research Institute of Resources Insects , Chinese Academy of Forestry , Kunming , Yunnan 650224 , People's Republic of China
| | - Juan Xu
- Research Institute of Resources Insects , Chinese Academy of Forestry , Kunming , Yunnan 650224 , People's Republic of China
| | - Wenwen Zhang
- Research Institute of Resources Insects , Chinese Academy of Forestry , Kunming , Yunnan 650224 , People's Republic of China
| | - Jinju Ma
- Research Institute of Resources Insects , Chinese Academy of Forestry , Kunming , Yunnan 650224 , People's Republic of China
| | - Lanxiang Liu
- Research Institute of Resources Insects , Chinese Academy of Forestry , Kunming , Yunnan 650224 , People's Republic of China
| | - Yanlin Sun
- Faculty of Chemical Engineering and Technology , Kunming University of Science and Technology , Kunming , Yunnan 650224 , People's Republic of China
| | - Hong Zhang
- Research Institute of Resources Insects , Chinese Academy of Forestry , Kunming , Yunnan 650224 , People's Republic of China
| | - Kai Li
- Research Institute of Resources Insects , Chinese Academy of Forestry , Kunming , Yunnan 650224 , People's Republic of China
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Fan H, Zheng T, Chen H, Huang J, Wei Z, Kang W, Dai C, Zeng H. Viscoelastic Surfactants with High Salt Tolerance, Fast-Dissolving Property, and Ultralow Interfacial Tension for Chemical Flooding in Offshore Oilfields. J SURFACTANTS DETERG 2018. [DOI: 10.1002/jsde.12042] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Haiming Fan
- Shandong Provincial Key Laboratory of Oilfield Chemistry, School of Petroleum Engineering; China University of Petroleum (East China); Qingdao Shandong Province 266580 China
| | - Tong Zheng
- Shandong Provincial Key Laboratory of Oilfield Chemistry, School of Petroleum Engineering; China University of Petroleum (East China); Qingdao Shandong Province 266580 China
| | - Haolin Chen
- Shandong Provincial Key Laboratory of Oilfield Chemistry, School of Petroleum Engineering; China University of Petroleum (East China); Qingdao Shandong Province 266580 China
| | - Jun Huang
- Department of Chemical and Materials Engineering; University of Alberta, 116 Street and 85 Avenue; Edmonton Alberta T6G 2G6 Canada
| | - Zhiyi Wei
- Shandong Provincial Key Laboratory of Oilfield Chemistry, School of Petroleum Engineering; China University of Petroleum (East China); Qingdao Shandong Province 266580 China
| | - Wanli Kang
- Shandong Provincial Key Laboratory of Oilfield Chemistry, School of Petroleum Engineering; China University of Petroleum (East China); Qingdao Shandong Province 266580 China
| | - Caili Dai
- Shandong Provincial Key Laboratory of Oilfield Chemistry, School of Petroleum Engineering; China University of Petroleum (East China); Qingdao Shandong Province 266580 China
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering; University of Alberta, 116 Street and 85 Avenue; Edmonton Alberta T6G 2G6 Canada
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Hu Y, Han J, Ge L, Guo R. Viscoelastic wormlike micelles formed by ionic liquid-type surfactant [C 16imC 8]Br towards template-assisted synthesis of CdS quantum dots. SOFT MATTER 2018; 14:789-796. [PMID: 29308491 DOI: 10.1039/c7sm02223a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this paper, viscoelastic wormlike micelles consisting of cationic liquid-type surfactant, 1-hexadecyl-3-octyl imidazolium bromide ([C16imC8]Br), water and different additives were utilized for the synthesis of CdS quantum dots. First, the influence of different additives, such as [Cd(NH3)6]Cl2 and ethanethioamid (precursors for the synthesis of CdS quantum dots), and temperature on the viscoelasticity of the [C16imC8]Br aqueous solution was studied by dynamic and steady rheology. Furthermore, the synthesized CdS quantum dots and their photoluminescence properties were characterized by transmission electron microscopy (TEM), UV-Vis absorption spectroscopy, X-ray diffraction (XRD) and energy-dispersive X-ray spectroscopy (EDX). In the end, the mechanism for the synthesis of CdS quantum dots in [C16imC8]Br wormlike micelles is proposed.
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Affiliation(s)
- Yimin Hu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, P. R. China.
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Sun P, Lu F, Wu A, Shi L, Zheng L. Spontaneous wormlike micelles formed in a single-tailed zwitterionic surface-active ionic liquid aqueous solution. SOFT MATTER 2017; 13:2543-2548. [PMID: 28321452 DOI: 10.1039/c7sm00304h] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Wormlike micelles were successfully fabricated by the self-assembly of a single-tailed zwitterionic surface-active ionic liquid (SAIL), 3-(1-hexadecyl-3-imidazolio) propanesulfonate β-naphthalene sulfonate (C16IPS-Nsa), in aqueous solutions without any additives. With increasing zwitterionic SAIL concentration, spontaneous transition from micelles to wormlike micelles and then a hexagonal phase occurs. Interestingly, the wormlike micelles are closed, stretched and directionally arranged, which was rarely found in previous research studies. This kind of wormlike micelle is useful to serve as novel soft template in the synthesis of functional materials. 1H NMR illustrated that the introduced π-π stacking and hydrophobic interactions originated from the hydrophobic aromatic counterions are responsible for the structural transformation. Density functional theory (DFT) simulated the optimum configuration of C16IPS-Nsa and calculated the interaction energy of C16IPS-Nsa-H2O is 39.6 kJ mol-1. This work paves the way for regulating the self-assembly structures of amphiphiles through changing specific weak interactions.
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Affiliation(s)
- Panpan Sun
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan 250100, China.
| | - Fei Lu
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan 250100, China.
| | - Aoli Wu
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan 250100, China.
| | - Lijuan Shi
- Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, China.
| | - Liqiang Zheng
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan 250100, China.
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Jurjiu A, Galiceanu M, Farcasanu A, Chiriac L, Turcu F. Relaxation dynamics of Sierpinski hexagon fractal polymer: Exact analytical results in the Rouse-type approach and numerical results in the Zimm-type approach. J Chem Phys 2016; 145:214901. [PMID: 28799361 DOI: 10.1063/1.4968209] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In this paper, we focus on the relaxation dynamics of Sierpinski hexagon fractal polymer. The relaxation dynamics of this fractal polymer is investigated in the framework of the generalized Gaussian structure model using both Rouse and Zimm approaches. In the Rouse-type approach, by performing real-space renormalization transformations, we determine analytically the complete eigenvalue spectrum of the connectivity matrix. Based on the eigenvalues obtained through iterative algebraic relations we calculate the averaged monomer displacement and the mechanical relaxation moduli (storage modulus and loss modulus). The evaluation of the dynamical properties in the Rouse-type approach reveals that they obey scaling in the intermediate time/frequency domain. In the Zimm-type approach, which includes the hydrodynamic interactions, the relaxation quantities do not show scaling. The theoretical findings with respect to scaling in the intermediate domain of the relaxation quantities are well supported by experimental results.
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Affiliation(s)
- Aurel Jurjiu
- Faculty of Physics, Babes-Bolyai University, Street Mihail Kogalniceanu 1, 400084 Cluj-Napoca, Romania
| | - Mircea Galiceanu
- Departamento de Fisica, Universidade Federal do Amazonas, 69077-000 Manaus, Brazil
| | - Alexandru Farcasanu
- Faculty of Physics, Babes-Bolyai University, Street Mihail Kogalniceanu 1, 400084 Cluj-Napoca, Romania
| | - Liviu Chiriac
- Faculty of Physics, Babes-Bolyai University, Street Mihail Kogalniceanu 1, 400084 Cluj-Napoca, Romania
| | - Flaviu Turcu
- Faculty of Physics, Babes-Bolyai University, Street Mihail Kogalniceanu 1, 400084 Cluj-Napoca, Romania
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Moussa W, Colombani O, Benyahia L, Nicolai T, Chassenieux C. Structure of a self-assembled network made of polymeric worm-like micelles. Polym Bull (Berl) 2016. [DOI: 10.1007/s00289-016-1615-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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