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Fehér B, Wacha A, Jezsó B, Bóta A, Pedersen JS, Varga I. The evolution of equilibrium poly(styrene sulfonate) and dodecyl trimethylammonium bromide supramolecular structure in dilute aqueous solution with increasing surfactant binding. J Colloid Interface Sci 2023; 651:992-1007. [PMID: 37586154 DOI: 10.1016/j.jcis.2023.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 07/27/2023] [Accepted: 08/01/2023] [Indexed: 08/18/2023]
Abstract
HYPOTHESIS In the last 20 years, it has been demonstrated that oppositely charged polyelectrolyte-surfactant (PE-S) mixtures are prone to forming kinetically arrested non-equilibrium aggregates, which are present in the prepared mixtures from rather low surfactant-to-polymer-repeat-unit ratios. Practically, this means that the PE-S mixtures used for the structural investigations of the formed PE-S complexes are typically a mixture of the primary PE-S complexes and large non-equilibrium aggregates of close to charge-neutral complexes. EXPERIMENTS In this work, we present a unique approach that allows the preparation of PE-S mixtures in the equilibrium one-phase region (surfactant binding β, is typically below 80%) without forming non-equilibrium aggregates. We used this method to prepare equilibrium, non-aggregated complexes of sodium poly(styrene sulfonate) (NaPSS, Mw = 17 kDa) and dodecyltrimethylammonium bromide (DTAB) (β = 10 - 70%) both in water and in an inert electrolyte (100 mM NaCl). The evolution of the complex structure was monitored by small-angle X-ray scattering (SAXS) as a function of increasing surfactant binding (β), and the measured scattering data were fitted by suitable structural models on an absolute scale where concentrations, compositions, and scattering contrasts calculated from molecular properties are used as restraints. FINDINGS We could show that at low binding (β < 30%), the system is a mixture of bare polyelectrolyte coils and NaPSS-DTAB complexes containing a closed surfactant associates of low aggregation number wrapped by the polyelectrolyte chain. Once all polymer chains are occupied by a micelle-like surfactant aggregate, the aggregation number increases linearly with increasing surfactant chemical potential. Using the structural insight provided by the SAXS measurements, we could fit the experimental binding isotherm data with a physically coherent, simple thermodynamic model. Finally, we also compared the stoichiometric NaPSS-DTAB precipitate's structure with the equilibrium complexes' structure.
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Affiliation(s)
- Bence Fehér
- Department of Chemistry and Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark; Institute of Chemistry, Eötvös Loránd University, Pázmány Péter sétány 1/A, 1117 Budapest, Hungary.
| | - András Wacha
- Research Centre for Natural Sciences, Institute of Materials and Environmental Chemistry, Magyar tudósok körútja 2, 1117 Budapest, Hungary.
| | - Bálint Jezsó
- Research Centre for Natural Sciences, Institute of Materials and Environmental Chemistry, Magyar tudósok körútja 2, 1117 Budapest, Hungary.
| | - Attila Bóta
- Research Centre for Natural Sciences, Institute of Materials and Environmental Chemistry, Magyar tudósok körútja 2, 1117 Budapest, Hungary.
| | - Jan Skov Pedersen
- Department of Chemistry and Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark.
| | - Imre Varga
- Institute of Chemistry, Eötvös Loránd University, Pázmány Péter sétány 1/A, 1117 Budapest, Hungary.
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Ferreira GA, Ram-On M, Talmon Y, Schillén K, Piculell L, Loh W. Complexes of Charged-Neutral Block Copolymers and Surfactants: Process-Dependent Features and Long-Term Stability of Their Aqueous Dispersions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:4113-4124. [PMID: 36881854 DOI: 10.1021/acs.langmuir.2c03500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Aqueous dispersions of charged-neutral block copolymers (poly(acrylamide)-b-poly(acrylate)) complexed with an oppositely charged surfactant (dodecyltrimethylammonium) have been prepared by different approaches: the simple mixing of two solutions (MS approach) containing the block copolymer and surfactant, with their respective simple counterions, and dispersion of a freeze-dried complex salt prepared in the absence of simple counterions (CS approach). The CS particles were investigated under different conditions: dispersion of a CS in salt-free water and dispersion of a CS in a dilute salt solution, the latter condition yielding dispersions with the same composition as the MS process. Additionally, aged dispersions (up to 6 months) and dispersed complexes of the polyacrylate homopolymer and dodecyltrimethylammonium surfactant were evaluated. By employing different characterization techniques, it was seen that dispersions prepared by the MS approach display nanometric spherical particles with disordered cores, and poor colloidal stability, partially caused by the absence of surface charge (ζ-potential close to zero). Oppositely, anisometric particles were formed in CS dispersions and were large enough to sustain micellar cubic cores. The CS particles presented long-time colloidal stability, partially due to a net negative surface charge, but the stability varied with the length of the neutral block composing the corona. Our results demonstrate that all dispersed particles are metastable structures, with physicochemical properties strongly dependent on the preparation procedure, thus making these particles suitable for fundamental studies and potential applications where accurate control of their properties, including size, shape, internal structure, and stability, is desired.
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Affiliation(s)
- Guilherme A Ferreira
- Institute of Chemistry, University of Campinas (UNICAMP), 13083-970 Campinas, São Paulo, Brazil
| | - Maor Ram-On
- Department of Chemical Engineering and The Russell Berrie Nanotechnology Institute (RBNI), Technion─Israel Institute of Technology, Haifa 3200003, Israel
| | - Yeshayahu Talmon
- Department of Chemical Engineering and The Russell Berrie Nanotechnology Institute (RBNI), Technion─Israel Institute of Technology, Haifa 3200003, Israel
| | - Karin Schillén
- Division of Physical Chemistry, Department of Chemistry, Lund University, SE-221 00 Lund, Sweden
| | - Lennart Piculell
- Division of Physical Chemistry, Department of Chemistry, Lund University, SE-221 00 Lund, Sweden
| | - Watson Loh
- Institute of Chemistry, University of Campinas (UNICAMP), 13083-970 Campinas, São Paulo, Brazil
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Pal T, Sahu K. Exploring cationic polyelectrolyte-micelle interaction via excited-state proton transfer. Signatures of probe transfer. Phys Chem Chem Phys 2023; 25:2963-2977. [PMID: 36606483 DOI: 10.1039/d2cp03883h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Excited-state proton transfer (ESPT) is a sensitive tool for the delicate monitoring of structural reorganization, hydration level, and confinement within surfactant and polymer assemblies. Here, we investigate the interaction of a cationic polyelectrolyte, poly(diallyl dimethylammonium chloride) (PDADMAC), with micelles of differently charged surfactants using 8-hydroxypyrene-1,3,6-trisulfonic acid (HPTS) as an ESPT probe. We used three surfactants: anionic sodium dodecyl sulfate (SDS), cationic dodecyl trimethylammonium bromide (DTAB), and zwitterionic N-dodecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate (SB12), possessing the same alkyl (dodecyl) chain but varying headgroup charges. The fluorescence of HPTS residing initially within the micellar medium modulates differently in the presence of PDADMAC. For the anionic SDS and cationic DTAB micelles, the emission spectrum of HPTS does not alter significantly; however, for SB12 micelles, the emission spectrum undergoes a strong modulation upon adding the polyelectrolyte. The emission intensities quench strongly at a low concentration of PDADMAC but recover at a higher concentration. The emission intensity ratio of the two emission bands also changes significantly, implying strong modulation of the ESPT process with varying PDADMAC concentrations. The time-resolved area normalized emission spectra (TRANES) disclose single isoemissive points in the SB12 micelle at low and high concentrations of PDADMAC but two different isoemissive points (one characteristic of the SB12 micelle at 500 nm and another characteristic of the PDADMAC interface at 480 nm) in the mixed assembly at an intermediate concentration. Detailed analysis suggests that the polyelectrolyte can enforce the transfer of the anionic probe HPTS from the zwitterionic micelle to the PDADMAC assembly above a specific PDADMAC concentration. The transfer of the molecular probe between two assemblies resembles a drug sequestration event, and the study reveals necessary emission signatures.
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Affiliation(s)
- Tapas Pal
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
| | - Kalyanasis Sahu
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
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Kwiatkowski AL, Molchanov VS, Kuklin AI, Chesnokov YM, Philippova OE. Salt-Induced Transformations of Hybrid Micelles Formed by Anionic Surfactant and Poly(4-vinylpyridine). Polymers (Basel) 2022; 14:polym14235086. [PMID: 36501481 PMCID: PMC9741239 DOI: 10.3390/polym14235086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/10/2022] [Accepted: 11/21/2022] [Indexed: 11/25/2022] Open
Abstract
Salt-induced structural transformation of charged hybrid surfactant/polymer micelles formed by potassium oleate and poly(4-vinylpyridine) was investigated by cryo-TEM, SANS with contrast variation, DLS, and 2D NOESY. Cryo-TEM data show, that at small salt concentration beads-on-string aggregates on polymer chains are formed. KCl induces the transformation of those aggregates into rods, which is due to the screening of the electrostatic repulsion between similarly charged beads by added salt. In a certain range of salt concentration, the beads-on-string aggregates coexist with the rodlike ones. In the presence of polymer, the sphere-to-rod transition occurs at higher salt concentration than in pure surfactant system indicating that hydrophobic polymer favors the spherical packing of potassium oleate molecules. The size of micelles was estimated by DLS. The rods that are formed in the hybrid system are much shorter than those in polymer-free surfactant solution suggesting the stabilization of the semi-spherical endcaps of the rods by embedded polymer. 2D NOESY data evidence that in the spherical aggregates the polymer penetrates deep into the core, whereas in tighter packed rodlike aggregates it is located mainly at core/corona interface. According to SANS with contrast variation, inside the rodlike aggregates the polymer adopts more compact coil conformation than in the beads-on-string aggregates. Such adaptive self-assembled polymer-surfactant nanoparticles with water-insoluble polymer are very promising for various applications including drag reduction at transportation of fluids.
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Affiliation(s)
- Alexander L. Kwiatkowski
- Physics Department, Moscow State University, 119991 Moscow, Russia
- Correspondence: (A.L.K.); (V.S.M.)
| | - Vyacheslav S. Molchanov
- Physics Department, Moscow State University, 119991 Moscow, Russia
- Correspondence: (A.L.K.); (V.S.M.)
| | | | - Yuri M. Chesnokov
- National Research Center, Kurchatov Institute, 123182 Moscow, Russia
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Gradzielski M. Polyelectrolyte-Surfactant Complexes As a Formulation Tool for Drug Delivery. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:13330-13343. [PMID: 36278880 DOI: 10.1021/acs.langmuir.2c02166] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Aqueous polyelectrolyte-surfactant complexes (PESCs) are very rich with respect to their properties and the structures formed by them. By design they normally contain hydrophobic micellar surfactant aggregates complexed by long polyelectrolyte chains, thereby combining the formation of small hydrophobic domains given by the surfactant with large-scale structuring due to the presence of the polyelectrolyte chain. In addition, they contain highly polar regions of surfactant head groups in contact with polyelectrolyte, forming a shell around the micellar aggregates, which often also possesses a certain hydrophobic character. Accordingly, the ability for solubilization of water-insoluble compounds of different sorts is particularly versatile in PESCs. Their solubilization sites with very different polarities and hydrophobic characters make them very flexible in adapting to the requirements of a given drug molecule. This renders them attractive for potential applications in drug delivery. In addition, modification of the rheological properties via self-assembly and network formation can be very important in PESC applications. In the following, we discuss the structures of PESCs and their properties, with a focus on the solubilization properties. Subsequently, examples are described where PESCs have been employed in the context of drug solubilization and delivery. These comprise examples with individual aggregates, cross-linked hydrogels, and ones taking advantage of the high solubilization capacity of microemulsions.
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Affiliation(s)
- Michael Gradzielski
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 124 Sekr. TC 7, D-10623Berlin, Germany
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6
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The changing face of SDS denaturation: Complexes of Thermomyces lanuginosus lipase with SDS at pH 4.0, 6.0 and 8.0. J Colloid Interface Sci 2022; 614:214-232. [DOI: 10.1016/j.jcis.2021.12.188] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/16/2021] [Accepted: 12/29/2021] [Indexed: 12/15/2022]
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7
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Babaev M, Lobov A, Shishlov N, Zakharova E, Orlov A, Baymiev A, Kolesov S. Nanoparticles of self-organizing ionic complexes based on a copolymer of N,N′-diallyl-N,N′-dimethylammonium chloride with N-vinylpyrrolidone modified by betulonic acid. REACT FUNCT POLYM 2021. [DOI: 10.1016/j.reactfunctpolym.2021.104968] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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8
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Kuzminskaya O, Hoffmann I, Clemens D, Gradzielski M. Viscosity of Polyelectrolyte Surfactant Complexes—The Importance of the Choice of the Polyelectrolyte Seen for the Case of PDADMAC Versus JR 400. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00327] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Olga Kuzminskaya
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 124, Sekr. TC 7, D-10623 Berlin, Germany
| | - Ingo Hoffmann
- Institut Max von Laue-Paul Langevin (ILL), F-38042 Grenoble Cedex 9, France
| | | | - Michael Gradzielski
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 124, Sekr. TC 7, D-10623 Berlin, Germany
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9
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Determination of SLES in Personal Care Products by Colloid Titration with Light Reflection Measurements. Molecules 2021; 26:molecules26092716. [PMID: 34063161 PMCID: PMC8124727 DOI: 10.3390/molecules26092716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 04/30/2021] [Accepted: 05/02/2021] [Indexed: 11/16/2022] Open
Abstract
The method of colloid titration with poly(diallyldimethylammonium) chloride has been improved to detect the endpoint with an off-vessel light reflectance sensor. The digital color sensor used measures light reflectance by means of light guides, with no immersion into the reaction solution. In such a method, the optical signal is free of disturbances caused by sticky flocs in the solution. The improved automatic titration set was applied for the determination of sodium laureth sulfate (SLES) in industrial batches and commercial personal care products. The sample color and opacity do not disturb the SLES quantification. When the SLES content lies in the range from 5% to 9%, the optimal sample weight is from 6 g to 3 g.
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10
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Guzmán E, Fernández-Peña L, Ortega F, Rubio RG. Equilibrium and kinetically trapped aggregates in polyelectrolyte–oppositely charged surfactant mixtures. Curr Opin Colloid Interface Sci 2020. [DOI: 10.1016/j.cocis.2020.04.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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11
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Polyelectrolyte-surfactant-complex nanoparticles as a delivery platform for poorly soluble drugs: A case study of ibuprofen loaded cetylpyridinium-alginate system. Int J Pharm 2020; 580:119199. [PMID: 32147494 DOI: 10.1016/j.ijpharm.2020.119199] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 02/28/2020] [Accepted: 03/04/2020] [Indexed: 02/08/2023]
Abstract
Previously, we reported on the surfactant cetylpyridinium chloride (CPC) as a crosslinker of alginate for the formation of stable polyelectrolyte-surfactant-complex nanoparticles. Here, we evaluate this system for increased solubility of a poorly soluble drug. The aim was to use CPC for solubilisation of ibuprofen and to use the micellar associates formed for alginate complexation and nanoparticle formation. We acquired deeper insights into the entropy led interactions between alginate, CPC and ibuprofen. Stable nanoparticles were formed across limited surfactant-to-polyelectrolyte molar ratios, with ~150 nm hydrodynamic diameter, monodispersed distribution, and negative zeta potential (-40 mV), with 34% ibuprofen loading. Their structure was obtained using small-angle X-ray scattering, which indicated disordered micellar associates when ibuprofen was incorporated. This resulted in nanoparticles with a complex nanostructured composition, as shown by transmission electron microscopy. Drug release from ibuprofen-cetylpyridinium-alginate nanoparticles was not hindered by alginate, and was similar to the release kinetics from ibuprofen-CPC solubilisates. These innovative carriers developed as polyelectrolyte-surfactant complexes can be used for solubilisation of poorly soluble drugs, where the surfactant simultaneously increases the solubility of the drug at concentrations below its critical micellar concentration and crosslinks the polyelectrolyte to form nanoparticles.
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12
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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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Guzmán E, Llamas S, Fernández-Peña L, Léonforte F, Baghdadli N, Cazeneuve C, Ortega F, Rubio RG, Luengo GS. Effect of a natural amphoteric surfactant in the bulk and adsorption behavior of polyelectrolyte-surfactant mixtures. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124178] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Akanno A, Guzmán E, Fernández-Peña L, Ortega F, G Rubio R. Surfactant-Like Behavior for the Adsorption of Mixtures of a Polycation and Two Different Zwitterionic Surfactants at the Water/Vapor Interface. Molecules 2019; 24:molecules24193442. [PMID: 31547491 PMCID: PMC6804224 DOI: 10.3390/molecules24193442] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 09/18/2019] [Accepted: 09/19/2019] [Indexed: 01/19/2023] Open
Abstract
The bulk and interfacial properties of solutions formed by a polycation (i.e., poly(diallyl-dimethylammonium chloride), PDADMAC) and two different zwitterionic surfactants (i.e., coco-betaine (CB) and cocoamidopropyl-betaine (CAPB)) have been studied. The bulk aggregation of the polyelectrolyte and the two surfactants was analyzed by turbidity and electrophoretic mobility measurements, and the adsorption of the solutions at the fluid interface was studied by surface tension and interfacial dilational rheology measurements. Evidence of polymer-surfactant complex formation in bulk was only found when the number of surfactant molecules was closer to the number of charged monomers in solutions, which suggests that the electrostatic repulsion associated with the presence of a positively charged group in the surfactant hinders the association between PDADMAC and the zwitterionic surfactant for concentrations in which there are no micelles in solution. This lack of interaction in bulk is reflected in the absence of an influence of the polyelectrolyte in the interfacial properties of the mixtures, with the behavior being controlled by the presence of surfactant. This work has evidenced the significant importance of the different interactions involved in the system for controlling the interaction and complexation mechanisms of in polyelectrolyte-surfactant mixtures.
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Affiliation(s)
- Andrew Akanno
- Departamento de Química Física, Universidad Complutense de Madrid, Facultad de Ciencias Químicas, Ciudad Universitaria s/n, 28040-Madrid, Spain.
- Instituto Pluridisciplina, Universidad Complutense de Madrid, Paseo Juan XXIII 1, 28040-Madrid, Spain.
| | - Eduardo Guzmán
- Departamento de Química Física, Universidad Complutense de Madrid, Facultad de Ciencias Químicas, Ciudad Universitaria s/n, 28040-Madrid, Spain.
- Instituto Pluridisciplina, Universidad Complutense de Madrid, Paseo Juan XXIII 1, 28040-Madrid, Spain.
| | - Laura Fernández-Peña
- Departamento de Química Física, Universidad Complutense de Madrid, Facultad de Ciencias Químicas, Ciudad Universitaria s/n, 28040-Madrid, Spain.
| | - Francisco Ortega
- Departamento de Química Física, Universidad Complutense de Madrid, Facultad de Ciencias Químicas, Ciudad Universitaria s/n, 28040-Madrid, Spain.
- Instituto Pluridisciplina, Universidad Complutense de Madrid, Paseo Juan XXIII 1, 28040-Madrid, Spain.
| | - Ramón G Rubio
- Departamento de Química Física, Universidad Complutense de Madrid, Facultad de Ciencias Químicas, Ciudad Universitaria s/n, 28040-Madrid, Spain.
- Instituto Pluridisciplina, Universidad Complutense de Madrid, Paseo Juan XXIII 1, 28040-Madrid, Spain.
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Bali K, Varga Z, Kardos A, Mészáros R. Impact of local inhomogeneities on the complexation between poly(diallyldimethylammoniumchloride) and sodium dodecyl sulfate. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.04.052] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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16
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Khan N, Brettmann B. Intermolecular Interactions in Polyelectrolyte and Surfactant Complexes in Solution. Polymers (Basel) 2018; 11:E51. [PMID: 30960035 PMCID: PMC6401804 DOI: 10.3390/polym11010051] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 12/20/2018] [Accepted: 12/28/2018] [Indexed: 12/20/2022] Open
Abstract
Polyelectrolytes are an important class of polymeric materials and are increasingly used in complex industrial formulations. A core use of these materials is in mixtures with surfactants, where a combination of hydrophobic and electrostatic interactions drives unique solution behavior and structure formation. In this review, we apply a molecular level perspective to the broad literature on polyelectrolyte-surfactant complexes, discussing explicitly the hydrophobic and electrostatic interaction contributions to polyelectrolyte surfactant complexes (PESCs), as well as the interplay between the two molecular interaction types. These interactions are sensitive to a variety of solution conditions, such as pH, ionic strength, mixing procedure, charge density, etc. and these parameters can readily be used to control the concentration at which structures form as well as the type of structure in the bulk solution.
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Affiliation(s)
- Nasreen Khan
- Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.
| | - Blair Brettmann
- Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.
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17
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Environmentally friendly platforms for encapsulation of an essential oil: Fabrication, characterization and application in pests control. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.07.028] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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18
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Gradzielski M, Hoffmann I. Polyelectrolyte-surfactant complexes (PESCs) composed of oppositely charged components. Curr Opin Colloid Interface Sci 2018. [DOI: 10.1016/j.cocis.2018.01.017] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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19
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Ferreira GA, Loh W. Liquid crystalline nanoparticles formed by oppositely charged surfactant-polyelectrolyte complexes. Curr Opin Colloid Interface Sci 2017. [DOI: 10.1016/j.cocis.2017.08.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Llamas S, Guzmán E, Baghdadli N, Ortega F, Cazeneuve C, Rubio RG, Luengo GS. Adsorption of poly(diallyldimethylammonium chloride)—sodium methyl-cocoyl-taurate complexes onto solid surfaces. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.03.003] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Delisavva F, Uchman M, Škvarla J, Woźniak E, Pavlova E, Šlouf M, Garamus VM, Procházka K, Štěpánek M. Influence of Corona Structure on Binding of an Ionic Surfactant in Oppositely Charged Amphiphilic Polyelectrolyte Micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:4059-4065. [PMID: 27054848 DOI: 10.1021/acs.langmuir.6b00700] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Interaction of polystyrene-block-poly(methacrylic acid) micelles (PS-PMAA) with cationic surfactant N-dodecylpyridinium chloride (DPCl) in alkaline aqueous solutions was studied by static and dynamic light scattering, SAXS, cryogenic transmission electron microscopy (cryo-TEM), isothermal titration calorimetry (ITC), and time-resolved fluorescence spectroscopy. ITC and fluorescence measurements show that there are two distinct regimes of surfactant binding in the micellar corona (depending on the DPCl content) caused by different interactions of DPCl with PMAA in the inner and outer parts of the corona. The compensation of the negative charge of the micellar corona by DPCl leads to the aggregation of PS-PMAA micelles, and the micelles form colloidal aggregates at a certain critical surfactant concentration. SAXS shows that the aggregates are formed by individual PS-PMAA micelles with intact cores and collapsed coronas interconnected with surfactant micelles by electrostatic interactions. Unlike polyelectrolyte-surfactant complexes formed by free polyelectrolyte chains, the PMAA/DPCl complex with collapsed corona does not contain surfactant micelles.
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Affiliation(s)
- Foteini Delisavva
- Department of Physical and Macromolecular Chemistry, Faculty of Science Charles University in Prague , Hlavova 2030, 12840 Prague 2, Czech Republic
| | - Mariusz Uchman
- Department of Physical and Macromolecular Chemistry, Faculty of Science Charles University in Prague , Hlavova 2030, 12840 Prague 2, Czech Republic
| | - Juraj Škvarla
- Department of Physical and Macromolecular Chemistry, Faculty of Science Charles University in Prague , Hlavova 2030, 12840 Prague 2, Czech Republic
| | - Edyta Woźniak
- Department of Physical and Macromolecular Chemistry, Faculty of Science Charles University in Prague , Hlavova 2030, 12840 Prague 2, Czech Republic
- Department of Chemistry, The Faculty of Food Science, Wrocław University of Environmental and Life Sciences , C. K. Norwida 25, 50-375 Wrocław, Poland
| | - Ewa Pavlova
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , Heyrovský Sq. 2, 16206 Prague 6, Czech Republic
| | - Miroslav Šlouf
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , Heyrovský Sq. 2, 16206 Prague 6, Czech Republic
| | - Vasil M Garamus
- Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research , D-21502 Geesthacht, Germany
| | - Karel Procházka
- Department of Physical and Macromolecular Chemistry, Faculty of Science Charles University in Prague , Hlavova 2030, 12840 Prague 2, Czech Republic
| | - Miroslav Štěpánek
- Department of Physical and Macromolecular Chemistry, Faculty of Science Charles University in Prague , Hlavova 2030, 12840 Prague 2, Czech Republic
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Bodnár K, Fegyver E, Nagy M, Mészáros R. Impact of Polyelectrolyte Chemistry on the Thermodynamic Stability of Oppositely Charged Macromolecule/Surfactant Mixtures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:1259-68. [PMID: 26780183 DOI: 10.1021/acs.langmuir.5b04431] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The complexation between hexadecyl- and dodecyltrimethylammonium bromides (CTAB and DTAB) with sodium poly[(vinyl alcohol)-co-(vinyl sulfate)] (PVAS) copolymer of low charge density has been investigated using pyrene fluorescence spectroscopy, electrophoretic mobility, turbidity, and dynamic light scattering measurements. The results indicate that the binding of the cationic surfactant occurs in three steps. At low surfactant concentrations, the cationic amphiphile binds to the vinyl sulfate groups. Above charge neutralization, surfactant binding may occur on the surface of the hydrophobic vinyl sulfate/CnTAB nanoassemblies. At even higher concentrations, the surfactant binds on the nonionic vinyl alcohol units of the polyion which reswells the PVAS/CnTAB complexes and makes them highly soluble in water. In earlier studies on oppositely charged ionic surfactants and homopolyelectrolytes the impact of mixing protocols was found remarkable, especially at surfactant excess, where these systems can be trapped in the charge stabilized colloidal dispersion state. In contrast, in the case of PVAS/CnTAB mixtures the effect of mixing is less pronounced and diminishes with increasing ionic strength or decreasing alkyl chain length of the surfactant. These findings are rationalized by taking into account the different binding mechanism of surfactants on oppositely charged homopolyelectrolytes and double hydrophilic copolymers.
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Affiliation(s)
- Katalin Bodnár
- Laboratory of Interfaces and Nanosized Systems, Institute of Chemistry, Eötvös Loránd University , 1117 Budapest, Pázmány Péter sétány 1/A, Hungary
| | - Edit Fegyver
- Laboratory of Interfaces and Nanosized Systems, Institute of Chemistry, Eötvös Loránd University , 1117 Budapest, Pázmány Péter sétány 1/A, Hungary
| | - Miklós Nagy
- Laboratory of Interfaces and Nanosized Systems, Institute of Chemistry, Eötvös Loránd University , 1117 Budapest, Pázmány Péter sétány 1/A, Hungary
| | - Róbert Mészáros
- Laboratory of Interfaces and Nanosized Systems, Institute of Chemistry, Eötvös Loránd University , 1117 Budapest, Pázmány Péter sétány 1/A, Hungary
- Department of Chemistry, University J. Selyeho , 945 01 Komárno, Slovakia
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