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Slejko E, Hribar-lee B. The effect of macromolecular crowders on dielecric constant of aqueous electrolyte solutions. J Mol Liq 2021; 336:116295. [DOI: 10.1016/j.molliq.2021.116295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Rahdar A, Hajinezhad MR, Nasri S, Beyzaei H, Barani M, Trant JF. The synthesis of methotrexate-loaded F127 microemulsions and their in vivo toxicity in a rat model. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113449] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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3
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Lukšič M, Slejko E, Hribar-Lee B. The influence of the poly(ethylene glycol) on the mean activity coefficients of NaCl aqueous solutions. The application of the MSA and HNC method. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2017.11.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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4
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Galimova VR, Liu M, Franko M, Volkov DS, Hibara A, Proskurnin MA. Hemichrome Determination by Thermal Lensing with Polyethylene Glycols for Signal Enhancement in Aqueous Solutions. ANAL LETT 2018. [DOI: 10.1080/00032719.2017.1391828] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Viktoriya R. Galimova
- Chemistry Department, M.V. Lomonosov Moscow State University, Moscow, Russia
- University of Nova Gorica, Laboratory for Environmental Research, Nova Gorica, Slovenia
| | - Mingqiang Liu
- University of Nova Gorica, Laboratory for Environmental Research, Nova Gorica, Slovenia
| | - Mladen Franko
- University of Nova Gorica, Laboratory for Environmental Research, Nova Gorica, Slovenia
| | - Dmitry S. Volkov
- Chemistry Department, M.V. Lomonosov Moscow State University, Moscow, Russia
| | - Akihide Hibara
- Institute of Multidisciplinary Research for Advanced Material (IMRAM), Tohoku University, Sendai, Japan
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Abstract
We study the conformation of a polymer (polyethylene glycol) in a nanoscopic soft confinement with attractive walls. The polymer is added to a water-in-oil microemulsion based on the deuterated anionic surfactant AOT, d-octane and D2O. Three different droplet sizes and up to three polymers per droplet are investigated with small angle scattering combining X-rays and neutrons. This allows determining the confinement size and polymer conformation on identical samples. Whereas polymer conformation in bulk is found to be well described with the model of a Gaussian coil its radius of gyration is drastically increased in the droplet. At the same time it is compressed on a local scale. This supports the picture of a polymer strongly adsorbed on the surfactant layer with a thickness of several Angstroms.
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Affiliation(s)
- Björn Kuttich
- Experimental Condensed Matter Physics, TU Darmstadt, Germany.
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Gurnev PA, Stanley CB, Aksoyoglu MA, Hong K, Parsegian VA, Bezrukov SM. Poly(ethylene glycol)s in Semidilute Regime: Radius of Gyration in the Bulk and Partitioning into a Nanopore. Macromolecules 2017; 50:2477-2483. [PMID: 29033467 DOI: 10.1021/acs.macromol.6b02571] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Using two approaches, small-angle neutron scattering (SANS) from bulk solutions and nanopore conductance-fluctuation analysis, we studied structural and dynamic features of poly(ethylene glycol) (PEG) water/salt solutions in the dilute and semidilute regimes. SANS measurements on PEG 3400 at the zero-average contrast yielded the single chain radius of gyration (Rg) over 1-30 wt %. We observed a small but statistically reliable decrease in Rg with increasing PEG concentration: at 30 wt % the chain contracts by a factor of 0.94. Analyzing conductance fluctuations of the α-hemolysin nanopore in the mixtures of PEG 200 with PEG 3400, we demonstrated that polymer partitioning into the nanopore is mostly due to PEG 200. Specifically, for a 1:1 wt/wt mixture the smaller polymer dominates to the extent that only about 1/25 of the nanopore volume is taken by the larger polymer. These findings advance our conceptual and quantitative understanding of nanopore polymer partitioning; they also support the main assumptions of the recent "polymers-pushing-polymers" model.
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Affiliation(s)
- Philip A Gurnev
- Section on Molecular Transport, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Christopher B Stanley
- Biology and Soft Matter Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - M Alphan Aksoyoglu
- Department of Physics, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Kunlun Hong
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - V Adrian Parsegian
- Department of Physics, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Sergey M Bezrukov
- Section on Molecular Transport, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892, United States
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Briceño Ahumada ZC, Soltero Martínez JFA, Carvajal Ramos F, Maldonado A. Rheology of the Sponge Phase of the SDS–Hexanol–Brine System. J SURFACTANTS DETERG 2017. [DOI: 10.1007/s11743-017-1930-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Affiliation(s)
- Ryan McDonough
- Department
of Physics, Cleveland State University, Cleveland, Ohio 44115, United States
| | - Rafael Cueto
- Department
of Chemistry and Macromolecular Studies Group, Louisiana State University, Baton
Rouge, Louisiana 70803, United States
| | - George D. J. Phillies
- Department
of Physics, Worcester Polytechnic Institute, Worcester, Massachusetts 01609, United States
| | - Paul S. Russo
- Department
of Chemistry and Macromolecular Studies Group, Louisiana State University, Baton
Rouge, Louisiana 70803, United States
| | - Derek Dorman
- Department
of Chemistry and Macromolecular Studies Group, Louisiana State University, Baton
Rouge, Louisiana 70803, United States
| | - Kiril A. Streletzky
- Department
of Physics, Cleveland State University, Cleveland, Ohio 44115, United States
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Dey J, Sultana N, Kumar S, Aswal VK, Choudhury S, Ismail K. Controlling the aggregation of sodium dodecylsulphate in aqueous poly(ethylene glycol) solutions. RSC Adv 2015. [DOI: 10.1039/c5ra13096d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The role of PEG's of different molecular weights on the self-assembly of SDS and the role of added NaCl has been addressed opening new scopes for further studies.
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Affiliation(s)
- J. Dey
- Department of Chemistry
- North-Eastern Hill University
- NEHU Campus
- Shillong – 793022
- India
| | - N. Sultana
- Department of Chemistry
- North-Eastern Hill University
- NEHU Campus
- Shillong – 793022
- India
| | - S. Kumar
- Solid State Physics Division
- Bhabha Atomic Research Center
- Mumbai – 400085
- India
| | - V. K. Aswal
- Solid State Physics Division
- Bhabha Atomic Research Center
- Mumbai – 400085
- India
| | - S. Choudhury
- Chemistry Division
- Bhabha Atomic Research Center
- Mumbai – 400085
- India
| | - K. Ismail
- Department of Chemistry
- North-Eastern Hill University
- NEHU Campus
- Shillong – 793022
- India
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Kamal MS, Hussien IA, Sultan AS, Han M. Rheological Study on ATBS-AM Copolymer-Surfactant System in High-Temperature and High-Salinity Environment. J CHEM-NY 2013; 2013:1-9. [DOI: 10.1155/2013/801570] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Experimental studies were conducted to evaluate the rheological properties of surfactant-polymer (SP) system. This SP system consists of a copolymer of acrylamide (AM) and acrylamido tertiary butyl sulfonate (ATBS) and sodium dodecyl sulphate (SDS) surfactant. Effects of surfactant concentration, temperature, polymer concentration, and salinity on rheological properties of SP system were investigated by means of oscillation and shear measurements. Comparison with classical partially hydrolyzed polyacrylamide (HPAM) was made. For the same temperature range, the viscosity drop for HPAM was about four times higher than the viscosity drop for ATBS-AM copolymer. In deionized water, viscosity of both polymers and SP systems was very high as compared to viscosity in saline water. Viscosity reduction of ATBS-AM copolymer was higher for salts having divalent cations. The SP system showed precipitation in presence of divalent cations. It worked well with monovalent cations even at relatively high salinities. The addition of 0.1% surfactant to the polymer resulted in a 60% decrease in the viscosity. Some interfacial rheological experiments were also carried out to investigate the behaviors on the interface between SP solutions and oil. Addition of 0.1% surfactant showed a 65% decrease inG′at SP solution-oil interface. SP system consisting of ATBS-AM and SDS showed better performance at high temperature compared to HPAM-SDS system. Due to precipitation, the SP system should be restricted to environment having low divalent cations.
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Nambam J, Philip J. Competitive adsorption of polymer and surfactant at a liquid droplet interface and its effect on flocculation of emulsion. J Colloid Interface Sci 2012; 366:88-95. [DOI: 10.1016/j.jcis.2011.07.100] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2011] [Revised: 06/28/2011] [Accepted: 07/08/2011] [Indexed: 11/26/2022]
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Déléris I, Andriot I, Gobet M, Moreau C, Souchon I, Guichard E. Determination of aroma compound diffusion in model food systems: Comparison of macroscopic and microscopic methodologies. J FOOD ENG 2010; 100:557-66. [DOI: 10.1016/j.jfoodeng.2010.05.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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Wei D, Ge L, Guo R. Binding Characteristics between Poly(ethylene glycol) and Hydrophilic Modified Ibuprofen in Aqueous Solution. J Phys Chem B 2010; 114:3472-81. [DOI: 10.1021/jp910315e] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Duo Wei
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, People’s Republic of China
| | - Lingling Ge
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, People’s Republic of China
| | - Rong Guo
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, People’s Republic of China
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Íñiguez-palomares R, Maldonado A. Topology change by screening the electrostatic interactions in a polymer–surfactant system. Colloid Polym Sci 2009; 287:1475-9. [DOI: 10.1007/s00396-009-2118-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Lauverjat C, Loubens CD, Déléris I, Tréléa IC, Souchon I. Rapid determination of partition and diffusion properties for salt and aroma compounds in complex food matrices. J FOOD ENG 2009. [DOI: 10.1016/j.jfoodeng.2009.02.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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López-Esparza R, Guedeau-Boudeville M, Larios-Rodríguez E, Maldonado A, Ober R, Urbach W. Confinement of a hydrophilic polymer in membrane lyotropic phases. J Colloid Interface Sci 2009; 331:185-90. [DOI: 10.1016/j.jcis.2008.11.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2008] [Revised: 11/08/2008] [Accepted: 11/11/2008] [Indexed: 11/15/2022]
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James-Smith MA, Shekhawat D, Cheung S, Moudgil BM, Shah DO. Role of Ethylene Oxide and Propylene Oxide Groups of Pluronics in Binding of Fatty Acid to Pluronics in Microemulsions. J SURFACTANTS DETERG 2008. [DOI: 10.1007/s11743-008-1077-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Cuny V, Antoni M, Arbelot M, Liggieri L. Structural properties and dynamics of C12E5 molecules adsorbed at water/air interfaces: A molecular dynamic study. Colloids Surf A Physicochem Eng Asp 2008. [DOI: 10.1016/j.colsurfa.2008.03.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Déléris I, Atlan S, Souchon I, Marin M, Tréléa IC. An experimental device to determine the apparent diffusivities of aroma compounds. J FOOD ENG 2008; 85:232-42. [DOI: 10.1016/j.jfoodeng.2007.07.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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James-Smith MA, Shekhawat D, Cheung S, Moudgil BM, Shah DO. Effect of chain length on binding of fatty acids to Pluronics in microemulsions. Colloids Surf B Biointerfaces 2007; 62:5-10. [PMID: 18155450 DOI: 10.1016/j.colsurfb.2007.08.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2007] [Revised: 08/27/2007] [Accepted: 08/28/2007] [Indexed: 11/29/2022]
Abstract
We investigated the effect of fatty acid chain length on the binding capacity of drug and fatty acid to Pluronic F127-based microemulsions. This was accomplished by using turbidity experiments. Pluronic-based oil-in-water microemulsions of various compositions were synthesized and titrated to turbidity with concentrated Amitriptyline, an antidepressant drug. Sodium salts of C(8), C(10), or C(12) fatty acid were used in preparation of the microemulsion and the corresponding binding capacities were observed. It has been previously determined that, for microemulsions prepared with sodium caprylate (C(8) fatty acid soap), a maximum of 11 fatty acid molecules bind to the microemulsion per 1 molecule of Pluronic F127 and a maximum of 12 molecules of Amitriptyline bind per molecule of F127. We have found that with increasing the chain length of the fatty acid salt component of the microemulsion, the binding capacity of both the fatty acid and the Amitriptyline to the microemulsion decreases. For sodium salts of C(8), C(10) and C(12) fatty acids, respectively, a maximum of approximately 11, 8.4 and 8.3 molecules of fatty acid molecules bind to 1 Pluronic F127 molecule. We propose that this is due to the decreasing number of free monomers with increasing chain length. As chain length increases, the critical micelle concentration (cmc) decreases, thus leading to fewer monomers. Pluronics are symmetric tri-block copolymers consisting of propylene oxide (PO) and ethylene oxide (EO). The polypropylene oxide block, PPO is sandwiched between two polyethylene oxide (PEO) blocks. The PEO blocks are hydrophilic while PPO is hydrophobic portion in the Pluronic molecule. Due to this structure, we propose that the fatty acid molecules that are in monomeric form most effectively diffuse between the PEO "tails" and bind to the hydrophobic PPO groups.
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Affiliation(s)
- Monica A James-Smith
- Center for Surface Science & Engineering, University of Florida, Gainesville, FL 32611-6005, USA
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Ge L, Zhang X, Guo R. Microstructure of Triton X-100/poly (ethylene glycol) complex investigated by fluorescence resonance energy transfer. POLYMER 2007; 48:2681-91. [DOI: 10.1016/j.polymer.2007.01.061] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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