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Guzmán E, Fernández-Peña L, S. Luengo G, Rubio AM, Rey A, Léonforte F. Self-Consistent Mean Field Calculations of Polyelectrolyte-Surfactant Mixtures in Solution and upon Adsorption onto Negatively Charged Surfaces. Polymers (Basel) 2020; 12:E624. [PMID: 32182867 PMCID: PMC7182847 DOI: 10.3390/polym12030624] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 03/07/2020] [Accepted: 03/08/2020] [Indexed: 01/18/2023] Open
Abstract
Self-Consistent Mean-Field Calculations (SCF) have provided a semi-quantitative description of the physico-chemical behavior of six different polyelectrolyte-surfactant mixtures. The SCF calculations performed showed that both the formation of polymer-surfactant in bulk and the adsorption of the formed complexes onto negatively-charged surfaces are strongly affected by the specific nature of the considered systems, with the polymer-surfactant interactions playing a central role in the self-assembly of the complexes that, in turn, affects their adsorption onto interfaces and surfaces. This work evidences that SCF calculations are a valuable tool for deepening on the understanding of the complex physico-chemical behavior of polyelectrolyte-surfactant mixtures. However, it is worth noting that the framework obtained on the basis of an SCF approach considered an equilibrium situation which may, in some cases, be far from the real situation appearing in polyelectrolyte-surfactant systems.
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Affiliation(s)
- Eduardo Guzmán
- Departamento de Química Física, Universidad Complutense de Madrid, 28040 Madrid, Spain; (L.F.-P.); (A.M.R.); (A.R.)
- Instituto Pluridisciplinar, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Laura Fernández-Peña
- Departamento de Química Física, Universidad Complutense de Madrid, 28040 Madrid, Spain; (L.F.-P.); (A.M.R.); (A.R.)
| | | | - Ana María Rubio
- Departamento de Química Física, Universidad Complutense de Madrid, 28040 Madrid, Spain; (L.F.-P.); (A.M.R.); (A.R.)
| | - Antonio Rey
- Departamento de Química Física, Universidad Complutense de Madrid, 28040 Madrid, Spain; (L.F.-P.); (A.M.R.); (A.R.)
| | - Fabien Léonforte
- L’Oréal Research and Innovation, 93600 Aulnay-Sous Bois, France;
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Bergsma J, van der Gucht J, Leermakers FAM. Coarse‐Grained Dendrimers in a Good Solvent: Comparison of Monte Carlo Simulations, Self‐Consistent Field Theory, and a Hybrid Modeling Strategy. MACROMOL THEOR SIMUL 2019. [DOI: 10.1002/mats.201800064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Johan Bergsma
- Physical Chemistry and Soft MatterWageningen University & Research Stippeneng 4 6708 WE Wageningen The Netherlands
| | - Jasper van der Gucht
- Physical Chemistry and Soft MatterWageningen University & Research Stippeneng 4 6708 WE Wageningen The Netherlands
| | - Frans A. M. Leermakers
- Physical Chemistry and Soft MatterWageningen University & Research Stippeneng 4 6708 WE Wageningen The Netherlands
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Midya L, Das R, Bhaumik M, Sarkar T, Maity A, Pal S. Removal of toxic pollutants from aqueous media using poly (vinyl imidazole) crosslinked chitosan synthesised through microwave assisted technique. J Colloid Interface Sci 2019; 542:187-197. [DOI: 10.1016/j.jcis.2019.01.121] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 01/20/2019] [Accepted: 01/28/2019] [Indexed: 10/27/2022]
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Li F, Zhu W, Song H, Wang K, Li W. Study of surfactant-polymer system containing a novel ternary sulfonated polyacrylamide on the oil-water interface properties. J DISPER SCI TECHNOL 2018. [DOI: 10.1080/01932691.2017.1421081] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Feng Li
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing, Heilongjiang, China
| | - Wenxi Zhu
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing, Heilongjiang, China
| | - Hua Song
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing, Heilongjiang, China
| | - Keliang Wang
- College of Petroleum Engineering, Northeast Petroleum University, Daqing, Heilongjiang, China
| | - Wei Li
- College of Petroleum Engineering, Northeast Petroleum University, Daqing, Heilongjiang, China
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Sweeney J, Webber GB, Atkin R. Poly(ethylene oxide) Mushrooms Adsorbed at Silica-Ionic Liquid Interfaces Reduce Friction. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:1947-1954. [PMID: 26844589 DOI: 10.1021/acs.langmuir.5b04503] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The adsorbed layer conformation and lubricity of 35, 100, and 300 kDa PEO adsorbed to ionic liquid (IL)-silica interfaces from 0.01 wt % solutions have been investigated using colloid probe atomic force microscopy. The ILs used were propylammonium nitrate (PAN) and 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF4]), which are protic and aprotic ILs, respectively. Normal force curves reveal steric interactions consistent with adsorbed polymer layers which are best fit using the mushroom model. Friction measurements show that the adsorbed polymer layer markedly reduces friction compared to surfaces sliding in the pure ILs and that lubricity increases with polymer length. When polymer is adsorbed to the sliding surfaces, friction is controlled by the creation and disruption of intermolecular interactions between entangled chains and the dragging of polymer chains through the interpenetration region. These experiments show that added polymer can reduce friction while maintaining the useful properties of ILs as lubricants.
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Affiliation(s)
- James Sweeney
- Priority Research Centre for Advanced Fluids and Interfaces, Newcastle Institute for Energy and Resources, The University of Newcastle , Callaghan, NSW 2308, Australia
| | - Grant B Webber
- Priority Research Centre for Advanced Fluids and Interfaces, Newcastle Institute for Energy and Resources, The University of Newcastle , Callaghan, NSW 2308, Australia
| | - Rob Atkin
- Priority Research Centre for Advanced Fluids and Interfaces, Newcastle Institute for Energy and Resources, The University of Newcastle , Callaghan, NSW 2308, Australia
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Bergsma J, Leermakers FAM, van der Gucht J. Interactions between nodes in a physical gel network of telechelic polymers; self-consistent field calculations beyond the cell model. Phys Chem Chem Phys 2015; 17:9001-14. [PMID: 25751455 DOI: 10.1039/c4cp03508a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Triblock copolymers, with associative end-groups and a soluble middle block, form flower-like micelles in dilute solutions and a physical gel at higher concentrations. In a gel the middle blocks form bridges between domains/nodes that contain the ends. We combine the self-consistent field theory with a simple molecular model to evaluate the pair potential between the nodes. In this model the end-groups are forced to remain in nodes and the soluble middle blocks are in solution. When the distance between the centres of the nodes is approximately the corona diameter, loops can transform into bridges, and the pair potential is attractive. Due to steric hindrance, the interaction is repulsive at smaller distances. Till now a cell-model has been used wherein a central node interacts through reflecting boundary conditions with its images in a spherical geometry. This artificial approach to estimate pair potentials is here complemented by more realistic three-gradient SCF models. We consider the pair interactions for (i) two isolated nodes, (ii) nodes positioned on a line (iii) a central node surrounded by its neighbours in simple cubic ordering, and (iv) a central node in a face centred cubic configuration of its neighbours. Qualitatively, the cell model is in line with the more refined models, but quantitative differences are significant. We also notice qualitative differences for the pair potentials in the specified geometries, which we interpret as a breakdown of the pairwise additivity of the pair potential. This implies that for course grained Monte Carlo or molecular dynamics simulations the best choice for the pair potentials depends on the expected node density.
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Affiliation(s)
- J Bergsma
- Laboratory of Physical Chemistry and Colloid Science, Wageningen University, Dreijenplein 6, 6703 HB, Wageningen, The Netherlands.
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Alves SPC, Pinheiro JP, Farinha JPS, Leermakers FAM. Particles decorated by an ionizable thermoresponsive polymer brush in water: experiments and self-consistent field modeling. J Phys Chem B 2014; 118:3192-206. [PMID: 24559318 DOI: 10.1021/jp408390t] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We have synthesized anionic multistimuli responsive core-shell polymer nanoparticles with low size dispersity composed of glassy poly(methyl methacrylate) (PMMA) cores of ca. 40 nm radius and poly(N-isopropylacrylamide) (PNIPAM) anionic brush-like shells with methacrylic acid comonomers. Using dynamic light scattering, we observed a volume phase transition upon an increase in temperature and this response was pH and ionic strength dependent. Already at room temperature we observed a pronounced polyelectrolyte effect, that is, a shift of the apparent pKa extracted from the degree of dissociation of the acids as a function of the pH. The multiresponsive behavior of the hydrophobic polyelectrolyte brush has been modeled using the Scheutjens-Fleer self-consistent field (SF-SCF) approach. Using a phenomenological relation between the Flory-Huggins χ parameter and the temperature, we confront the predicted change in the brush height with the observed change of the hydrodynamic radius and degree of dissociation and obtain estimates for the average chain lengths (number of Kuhn segments) of the corona chains, the grafting density and charge density distributions. The theory reveals a rich internal structure of the hydrophobic polyelectrolyte brush, especially near the collapse transition, where we find a microphase segregated structure. Considering this complexity, it is fair to state that the theoretical predictions follow the experimental data semiquantitatively, and it is attractive to attribute the observed disparity between theory and experiments to the unknown polydispersity of the chains, the unknown distribution of the charges, or other experimental complications. More likely, however, the deviations point to significant problems of the mean field theory, which focuses solely on the radial distributions and ignores the possibility of the formation of lateral (local) inhomogeneities in partially collapsed polyelectrolyte brushes. We argue that the PNIPAM brush at room temperature is already behaving nonideally.
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Affiliation(s)
- S P C Alves
- Centro de Química-Física Molecular and IN-Institute of Nanoscience and Nanotechnology, Instituto Superior Técnico , 1049-001 Lisboa, Portugal
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Yang P, Tong C, Zhu Y. The self-consistent field study of the adsorption of flexible homo-polymers onto two neutral cylindrical objects. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.05.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Cattoz B, de Vos WM, Cosgrove T, Crossman M, Prescott SW. Manipulating interfacial polymer structures through mixed surfactant adsorption and complexation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:6282-6290. [PMID: 22435458 DOI: 10.1021/la300282m] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The effects of a nonionic alcohol ethoxylate surfactant, C(13)E(7), on the interactions between PVP and SDS both in the bulk and at the silica nanoparticle interface are studied by photon correlation spectroscopy, solvent relaxation NMR, SANS, and optical reflectometry. Our results confirmed that, in the absence of SDS, C(13)E(7) and PVP are noninteracting, while SDS interacts strongly both with PVP and C(13)E(7) . Studying interfacial interactions showed that the interfacial interactions of PVP with silica can be manipulated by varying the amounts of SDS and C(13)E(7) present. Upon SDS addition, the adsorbed layer thickness of PVP on silica increases due to Coulombic repulsion between micelles in the polymer layer. When C(13)E(7) is progressively added to the system, it forms mixed micelles with the complexed SDS, reducing the total charge per micelle and thus reducing the repulsion between micelle and the silica surface that would otherwise cause the PVP to desorb. This causes the amount of adsorbed polymer to increase with C(13)E(7) addition for the systems containing SDS, demonstrating that addition of C(13)E(7) hinders the SDS-mediated desorption of an adsorbed PVP layer.
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Affiliation(s)
- Beatrice Cattoz
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
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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] [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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Tummala NR, Shi L, Striolo A. Molecular dynamics simulations of surfactants at the silica–water interface: Anionic vs nonionic headgroups. J Colloid Interface Sci 2011; 362:135-43. [DOI: 10.1016/j.jcis.2011.06.033] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Revised: 06/11/2011] [Accepted: 06/13/2011] [Indexed: 11/17/2022]
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Brzozowska AM, Keesman KJ, de Keizer A, Leermakers FAM. Formation and structure of ionomer complexes from grafted polyelectrolytes. Colloid Polym Sci 2011; 289:889-902. [PMID: 21765579 PMCID: PMC3102187 DOI: 10.1007/s00396-010-2368-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2010] [Revised: 12/19/2010] [Accepted: 12/23/2010] [Indexed: 11/28/2022]
Abstract
We discuss the structure and formation of Ionomer Complexes formed upon mixing a grafted block copolymer (poly(acrylic acid)-b-poly(acrylate methoxy poly(ethylene oxide)), PAA21-b-PAPEO14) with a linear polyelectrolyte (poly(N-methyl 2-vinyl pyridinium iodide), P2MVPI), called grafted block ionomer complexes (GBICs), and a chemically identical grafted copolymer (poly(acrylic acid)-co-poly(acrylate methoxy poly(ethylene oxide)), PAA28-co-PAPEO22) with a linear polyelectrolyte, called grafted ionomer complexes (GICs). Light scattering measurements show that GBICs are much bigger (~70–100 nm) and GICs are much smaller or comparable in size (6–22 nm) to regular complex coacervate core micelles (C3Ms). The mechanism of GICs formation is different from the formation of regular C3Ms and GBICs, and their size depends on the length of the homopolyelectrolyte. The sizes of GBICs and GICs slightly decrease with temperature increasing from 20 to 65 °C. This effect is stronger for GBICs than for GICs, is reversible for GICs and GBIC-PAPEO14/P2MVPI228, and shows some hysteresis for GBIC-PAPEO14/P2MVPI43. Self-consistent field (SCF) calculations for assembly of a grafted block copolymer (having clearly separated charged and grafted blocks) with an oppositely charged linear polyelectrolyte of length comparable to the charged copolymer block predict formation of relatively small spherical micelles (~6 nm), with a composition close to complete charge neutralization. The formation of micellar assemblies is suppressed if charged and grafted monomers are evenly distributed along the backbone, i.e., in case of a grafted copolymer. The very large difference between the sizes found experimentally for GBICs and the sizes predicted from SCF calculations supports the view that there is some secondary association mechanism. A possible mechanism is discussed.
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Affiliation(s)
- Agata M. Brzozowska
- Laboratory of Physical Chemistry and Colloid Science, Wageningen University, Dreijenplein 6, 6703 Wageningen, the Netherlands
- Wetsus, Centre of Excellence for Sustainable Water Technology, Agora 1, P.O. Box 1113, 8900 Leeuwarden, the Netherlands
| | - Karel J. Keesman
- Systems and Control Group, Wageningen University, Bornse Weilanden 9, 6708 Wageningen, the Netherlands
| | - Arie de Keizer
- Laboratory of Physical Chemistry and Colloid Science, Wageningen University, Dreijenplein 6, 6703 Wageningen, the Netherlands
| | - Frans A. M. Leermakers
- Laboratory of Physical Chemistry and Colloid Science, Wageningen University, Dreijenplein 6, 6703 Wageningen, the Netherlands
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Källrot N, Linse P. Dynamics of Competitive Polymer Adsorption onto Planar Surfaces in Good Solvent. J Phys Chem B 2010; 114:3741-53. [DOI: 10.1021/jp908676p] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Niklas Källrot
- Physical Chemistry, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, S-221 00 Lund, Sweden
| | - Per Linse
- Physical Chemistry, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, S-221 00 Lund, Sweden
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