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Yoshida M, Nakagawa D, Hozumi H, Horikawa Y, Makino S, Nakamura H, Shikata T. A New Concept for Interpretation of the Viscoelastic Behavior of Aqueous Sodium Carboxymethyl Cellulose Systems. Biomacromolecules 2024; 25:3420-3431. [PMID: 38733614 DOI: 10.1021/acs.biomac.4c00070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2024]
Abstract
Viscoelastic behaviors of aqueous systems of commercially available sodium carboxymethyl cellulose (NaCMC) samples with the degrees of substitution (DS) of approximately 0.68 and 1.3, and the weight-average molar masses (Mw) higher than 200 kg mol-1 dissolved in pure water and aqueous sodium chloride solutions were investigated over a wide concentration (c) range of NaCMC samples. The dependencies of the specific viscosity (ηsp), the average relaxation time (τw), and the reciprocal of the steady-state compliance (Je-1) on c were discussed. The relationships ηsp ∝ c3, τw ∝ c2, and Je-1 ∝ c, characteristic of the rod particle suspensions, were clearly observed in a range lower than the c where the critical gel behavior was observed. Thus, a new concept based on the rheology of rod particle suspensions was employed to interpret the viscoelastic behaviors obtained in the c range. In this context, NaCMC polymer molecules are assumed to behave as extended rod particles with length (L) and diameter (d), including effective electrostatic repulsive distances, due to the dissociation of Na+ in aqueous systems. Thus, the number density of polymer molecules is given to be ν = c/Mw, and viscoelastic parameters such as ηsp, τw, and Je-1 are calculated using the theoretical model for rod particle suspensions proposed by Doi and Edwards. This concept reasonably described not only the viscoelastic data obtained in this study but also those from other groups using NaCMC samples with different DS and Mw values.
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Affiliation(s)
- Misato Yoshida
- Division of Natural Resources and Eco-materials, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
- Cellulose Research Unit, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
| | - Daiki Nakagawa
- Division of Natural Resources and Eco-materials, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
- Cellulose Research Unit, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
| | - Hyota Hozumi
- Division of Natural Resources and Eco-materials, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
- Cellulose Research Unit, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
| | - Yoshiki Horikawa
- Division of Natural Resources and Eco-materials, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
- Cellulose Research Unit, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
| | - Soichiro Makino
- Toyota Central R&D Labs., Inc., 41-1 Yokomichi, Nagakute, Aichi 480-1192, Japan
| | - Hiroshi Nakamura
- Toyota Central R&D Labs., Inc., 41-1 Yokomichi, Nagakute, Aichi 480-1192, Japan
| | - Toshiyuki Shikata
- Division of Natural Resources and Eco-materials, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
- Cellulose Research Unit, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
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2
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G Lopez C, Matsumoto A, Shen AQ. Dilute polyelectrolyte solutions: recent progress and open questions. SOFT MATTER 2024; 20:2635-2687. [PMID: 38427030 DOI: 10.1039/d3sm00468f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
Polyelectrolytes are a class of polymers possessing ionic groups on their repeating units. Since counterions can dissociate from the polymer backbone, polyelectrolyte chains are strongly influenced by electrostatic interactions. As a result, the physical properties of polyelectrolyte solutions are significantly different from those of electrically neutral polymers. The aim of this article is to highlight key results and some outstanding questions in the polyelectrolyte research from recent literature. We focus on the influence of electrostatics on conformational and hydrodynamic properties of polyelectrolyte chains. A compilation of experimental results from the literature reveals significant disparities with theoretical predictions. We also discuss a new class of polyelectrolytes called poly(ionic liquid)s that exhibit unique physical properties in comparison to ordinary polyelectrolytes. We conclude this review by listing some key research challenges in order to fully understand the conformation and dynamics of polyelectrolytes in solutions.
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Affiliation(s)
- Carlos G Lopez
- Institute of Physical Chemistry, RWTH Aachen University, Aachen, 52056, Germany
| | - Atsushi Matsumoto
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, University of Fukui, 3-9-1 Bunkyo, Fukui City, Fukui 910-8507, Japan.
| | - Amy Q Shen
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan.
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3
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Guo Y, Li L, Yang J. Intrachain and interchain complexation of polyacrylic acids bottlebrush chains with Ca2+ in aqueous solutions. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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4
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Matsumoto A, Shen AQ. Rheological scaling of ionic-liquid-based polyelectrolytes in ionic liquid solutions: the effect of the ion diameter of ionic liquids. SOFT MATTER 2022; 18:4197-4204. [PMID: 35607974 DOI: 10.1039/d2sm00484d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
We investigate the effect of the ion diameter a of ionic liquids (ILs) on the shear viscosity of polymerized ionic liquids (PILs) in IL solutions. When both the PIL and IL contain large PFSI anions (a ≈ 0.57 nm), the specific viscosity ηsp first decreases with increasing IL concentration cIL in the low cIL regime, reaches a minimum and then increases with increasing cIL in the high cIL regime. By comparing the measured ηsp with the modified charge screening model proposed in our previous study [Matsumoto et al., Macromolecules, 2021, 54, 5648-5661], we attribute the observed non-monotonic trend of ηsp against cIL to the charge underscreening phenomenon, i.e., an increase of the screening length at high cIL leads to the upturn of ηsp. On the other hand, when the PIL and IL contain small BF4 anions (a ≈ 0.34 nm), the ηsp decreases asymptotically with increasing cIL, because the charge on the PIL chain is likely screened fully in the entire cIL regime. Our results demonstrate that the ion diameter of ILs plays an important role in governing the charge screening mechanism of PILs in IL solutions, and thus influencing the viscoelastic properties of PIL solutions.
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Affiliation(s)
- Atsushi Matsumoto
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan.
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, University of Fukui, 3-9-1 Bunkyo, Fukui City, Fukui 910-8507, Japan.
| | - Amy Q Shen
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan.
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Balding P, Borrelli R, Volkovinsky R, Russo PS. Physical Properties of Sodium Poly(styrene sulfonate): Comparison to Incompletely Sulfonated Polystyrene. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c01065] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paul Balding
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- Georgia Tech Polymer Network, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Rachel Borrelli
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Ron Volkovinsky
- Chattahoochee High School, Johns Creek, Georgia 30022, United States
- Open Polymer Active Learning Laboratory, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Paul S. Russo
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- Georgia Tech Polymer Network, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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6
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Digby ZA, Yang M, Lteif S, Schlenoff JB. Salt Resistance as a Measure of the Strength of Polyelectrolyte Complexation. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02151] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zachary A. Digby
- Department of Chemistry and Biochemistry, The Florida State University, Tallahassee, Florida 32306, United States
| | - Mo Yang
- Department of Chemistry and Biochemistry, The Florida State University, Tallahassee, Florida 32306, United States
| | - Sandrine Lteif
- Department of Chemistry and Biochemistry, The Florida State University, Tallahassee, Florida 32306, United States
| | - Joseph B. Schlenoff
- Department of Chemistry and Biochemistry, The Florida State University, Tallahassee, Florida 32306, United States
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7
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Lopez CG, Linders J, Mayer C, Richtering W. Diffusion and Viscosity of Unentangled Polyelectrolytes. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01169] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Carlos G. Lopez
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany
| | - Jürgen Linders
- Physical Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, 45117 Essen, Germany
| | - Christian Mayer
- Physical Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, 45117 Essen, Germany
| | - Walter Richtering
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany
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8
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Liu S, Wang Y, Ming X, Xu Z, Liu Y, Gao C. High-Speed Blow Spinning of Neat Graphene Fibrous Materials. NANO LETTERS 2021; 21:5116-5125. [PMID: 34126742 DOI: 10.1021/acs.nanolett.1c01076] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Achieving high spinning speed is critical to the production efficiency and viable application of fiber species. Graphene fiber (GF) has recently emerged as a carbonaceous fiber with excellent functionality. However, the extremely low wet spinning speed of GF has limited its applications. We realized high-speed blow spinning of neat GF and fabric by modulating the rheological properties of the graphene oxide (GO) dispersion. We achieved a speed of 556 m min-1, 2 orders of magnitude faster than that for wet spinning. We chose ultrahigh molecular weight polymers as transient additives to circumvent the intrinsic barrier effect of GO and achieve high spinning dope stretchability at low polymer percentages-down to 25 wt %. Minimizing the polymer additive content ensures the high electrical/thermal conductivity of the blow-spun fiber and fabric. This work provides insight into the unique flow properties of 2D sheets and will promote the efficient production of graphene-based fibrous materials.
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Affiliation(s)
- Senping Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou 310027, P. R. China
| | - Yazhe Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou 310027, P. R. China
| | - Xin Ming
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou 310027, P. R. China
| | - Zhen Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou 310027, P. R. China
| | - Yingjun Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou 310027, P. R. China
| | - Chao Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou 310027, P. R. China
- Xiamen University, 422 Siming Road, Xiamen 361005, P. R. China
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9
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Matsumoto A, Yoshizawa R, Urakawa O, Inoue T, Shen AQ. Rheological Scaling of Ionic Liquid-Based Polyelectrolytes in the Semidilute Unentangled Regime from Low to High Salt Concentrations. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00576] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Atsushi Matsumoto
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Kunigami-gun, Okinawa 904-0495, Japan
- Department of Applied Chemistry and Biotechnology, University of Fukui, 3-9-1 Bunkyo, Fukui-shi, Fukui 910-8507, Japan
| | - Ryota Yoshizawa
- Department of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Osamu Urakawa
- Department of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Tadashi Inoue
- Department of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Amy Q. Shen
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Kunigami-gun, Okinawa 904-0495, Japan
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10
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Zhang H, Feng Y. Dependence of intrinsic viscosity and molecular size on molecular weight of partially hydrolyzed polyacrylamide. J Appl Polym Sci 2021. [DOI: 10.1002/app.50850] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Hao Zhang
- Polymer Research Institute, State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu People's Republic of China
| | - Yujun Feng
- Polymer Research Institute, State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu People's Republic of China
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11
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Müller M, Wirth L, Urban B. Determination of the Carboxyl Dissociation Degree and
pK
a
Value of Mono and Polyacid Solutions by FTIR Titration. MACROMOL CHEM PHYS 2021. [DOI: 10.1002/macp.202000334] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Martin Müller
- Department of Functional Colloidal Materials Leibniz‐Institut für Polymerforschung Dresden e.V. Hohe Str. 6 Dresden D‐01069 Germany
- Faculty of Chemistry and Food Chemistry Technische Universität Dresden Dresden D‐01062 Germany
| | - Luise Wirth
- Department of Functional Colloidal Materials Leibniz‐Institut für Polymerforschung Dresden e.V. Hohe Str. 6 Dresden D‐01069 Germany
- Faculty of Chemistry and Food Chemistry Technische Universität Dresden Dresden D‐01062 Germany
| | - Birgit Urban
- Department of Functional Colloidal Materials Leibniz‐Institut für Polymerforschung Dresden e.V. Hohe Str. 6 Dresden D‐01069 Germany
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12
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Senechal V, Saadaoui H, Vargas-Alfredo N, Rodriguez-Hernandez J, Drummond C. Weak polyelectrolyte brushes: re-entrant swelling and self-organization. SOFT MATTER 2020; 16:7727-7738. [PMID: 32735003 DOI: 10.1039/d0sm00810a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We have studied the combined influence of pH and ionic strength on the properties of brushes of a weak polyion, poly(acrylic acid), in conditions of grafting density close to the mushroom-brush crossover. By combining atomic force microscopy AFM and quartz crystal microbalance, we show that at low ionic strengths the conformational change of grafted polyions is non-monotonic with increasing pH due to the counterintuitive variation of the ionization degree. Thus, reentrant swelling of the polymer chains is observed with increasing pH. This effect is more important at low polymer grafting densities, when it is accompanied by in-plane heterogeneous distribution at intermediate pH values. In addition, we observed self-assembly on the polymer brush (formation of holes and islands) at pH values below pKa, due to the short-range attractive interaction between uncharged grafted chains. The sensitivity of the ionization of grafted chains to the physicochemical environment was also studied by measuring the interaction force between a silica tip and polymer brushes by atomic force microscopy. The dependence of the ionization of polyions on the presence of the tip points toward important charge regulation effects, in particular at pH values corresponding to partial ionization of the polyion.
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Affiliation(s)
- Vincent Senechal
- CNRS, Centre de Recherche Paul Pascal (CRPP), UMR 5031, F-33600 Pessac, France. and Université de Bordeaux, Centre de Recherche Paul Pascal, F-33600 Pessac, France
| | - Hassan Saadaoui
- CNRS, Centre de Recherche Paul Pascal (CRPP), UMR 5031, F-33600 Pessac, France. and Université de Bordeaux, Centre de Recherche Paul Pascal, F-33600 Pessac, France
| | - Nelson Vargas-Alfredo
- Instituto de Ciencia y Tecnología de Polímeros, CSIC, Juan de la Cierva 3, 28006, Madrid, Spain
| | | | - Carlos Drummond
- CNRS, Centre de Recherche Paul Pascal (CRPP), UMR 5031, F-33600 Pessac, France. and Université de Bordeaux, Centre de Recherche Paul Pascal, F-33600 Pessac, France
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13
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Sharratt WN, O’Connell R, Rogers SE, Lopez CG, Cabral JT. Conformation and Phase Behavior of Sodium Carboxymethyl Cellulose in the Presence of Mono- and Divalent Salts. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b02228] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- William N. Sharratt
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, U.K
| | - Róisín O’Connell
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, U.K
| | - Sarah E. Rogers
- ISIS, Rutherford Appleton Laboratory, Harwell, Didcot OX11 0QX, U.K
| | - Carlos G. Lopez
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany
| | - João T. Cabral
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, U.K
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14
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Carl N, Müller W, Schweins R, Huber K. Controlling Self-Assembly with Light and Temperature. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:223-231. [PMID: 31820995 DOI: 10.1021/acs.langmuir.9b03040] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Complexes between the anionic polyelectrolyte sodium polyacrylate (PA) and an oppositely charged divalent azobenzene dye are prepared in aqueous solution. Depending on the ratio between dye and polyelectrolyte stable aggregates with a well-defined spherical shape are observed. Upon exposure of these complexes to UV light, the trans → cis transition of the azobenzene is excited resulting in a better solubility of the dye and a dissolution of the complexes. The PA chains reassemble into well-defined aggregates when the dye is allowed to relax back into the trans isomer. Varying the temperature during this reformation step has a direct influence on the final size of the aggregates rendering temperature in an efficient way to easily change the size of the self-assemblies. Application of time-resolved small-angle neutron scattering (SANS) to study the structure formation reveals that the cis → trans isomerization is the rate-limiting step followed by a nucleation and growth process.
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Affiliation(s)
- Nico Carl
- Large Scale Structures Group, DS , Institut Laue-Langevin , 71 Avenue des Martyrs , CS 20 156, 38042 Grenoble , France
- Chemistry Department , University of Padeborn , Warburger Str. 100 , 33098 Paderborn , Germany
| | | | - Ralf Schweins
- Large Scale Structures Group, DS , Institut Laue-Langevin , 71 Avenue des Martyrs , CS 20 156, 38042 Grenoble , France
| | - Klaus Huber
- Chemistry Department , University of Padeborn , Warburger Str. 100 , 33098 Paderborn , Germany
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15
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Lopez CG, Lohmeier T, Wong JE, Richtering W. Electrostatic expansion of polyelectrolyte microgels: Effect of solvent quality and added salt. J Colloid Interface Sci 2020; 558:200-210. [DOI: 10.1016/j.jcis.2019.07.042] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 07/05/2019] [Accepted: 07/16/2019] [Indexed: 11/24/2022]
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16
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Mechtaeva E, Zorin I, Gavrilova D, Fetin P, Zorina N, Bilibin A. Polyelectrolyte complexes of polyacrylic acid with oligovalent organic counterions. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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17
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Yao G, Zhao J, Ramisetti SB, Wen D. Atomistic Molecular Dynamic Simulation of Dilute Poly(acrylic acid) Solution: Effects of Simulation Size Sensitivity and Ionic Strength. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b03549] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Guice Yao
- School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT, U.K
| | - Jin Zhao
- School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT, U.K
| | | | - Dongsheng Wen
- School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT, U.K
- School of Aeronautic Science and Engineering, Beihang University, Beijing, 100191, China
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18
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Urbanski A, Hansch M, Lopez CG, Schweins R, Hertle Y, Hellweg T, Polzer F, Huber K. Polyacrylates in the presence of an extraordinary monovalent cation—Solution behavior and metal nanoparticle formation. J Chem Phys 2018; 149:163318. [DOI: 10.1063/1.5028182] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Anna Urbanski
- Physikalische Chemie, Universität Paderborn, 33098 Paderborn, Germany
| | - Markus Hansch
- Physikalische Chemie, Universität Paderborn, 33098 Paderborn, Germany
| | - Carlos G. Lopez
- Physikalische Chemie, Universität Paderborn, 33098 Paderborn, Germany
| | - Ralf Schweins
- Institut Laue-Langevin, DS/LSS, 71 Avenue des Martyrs, CS 20 156, F-38042 Grenoble Cedex 9, France
| | - Yvonne Hertle
- Physikalische und Biophysikalische Chemie, Universität Bielefeld, 33615 Bielefeld, Germany
| | - Thomas Hellweg
- Physikalische und Biophysikalische Chemie, Universität Bielefeld, 33615 Bielefeld, Germany
| | - Frank Polzer
- Department of Physics, Humboldt-Universität zu Berlin, 10099 Berlin, Germany
| | - Klaus Huber
- Physikalische Chemie, Universität Paderborn, 33098 Paderborn, Germany
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19
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Lopez CG, Richtering W. Conformation and dynamics of flexible polyelectrolytes in semidilute salt-free solutions. J Chem Phys 2018; 148:244902. [DOI: 10.1063/1.5024242] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Carlos G. Lopez
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52056 Aachen, Germany
| | - Walter Richtering
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52056 Aachen, Germany
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20
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Hansch M, Hämisch B, Schweins R, Prévost S, Huber K. Liquid-liquid phase separation in dilute solutions of poly(styrene sulfonate) with multivalent cations: Phase diagrams, chain morphology, and impact of temperature. J Chem Phys 2018; 148:014901. [PMID: 29306300 DOI: 10.1063/1.5006618] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The dilute solution behavior of sodium poly(styrene sulfonate) is studied in the presence of trivalent Al3+ and bivalent Ba2+ cations at various levels of excess NaCl. The study evaluates the phase behavior and the morphology of the polyelectrolyte chains with increasing extent of decoration with the Al3+ and Ba2+ cations and analyses the effect of temperature on these decorated chains. The phase behavior is presented in the form of the cation concentration versus the respective poly(styrene sulfonate) concentration, recorded at the onset of precipitation. Whereas poly(styrene sulfonate) with Al3+ exhibits a linear phase boundary, denoted as the "threshold line," which increases with increasing poly(styrene sulfonate) concentration, Ba2+ cations show a threshold line which is independent of the poly(styrene sulfonate) concentration. An additional re-entrant phase, at considerably higher cation content than those of the threshold lines, is observed with Al3+ cations but not with Ba2+ cations. The threshold line and the re-entrant phase boundary form parts of the liquid-liquid phase boundary observed at the limit of low polymer concentration. The dimensions of the polyelectrolyte chains shrink considerably while approaching the respective threshold lines on increase of the Al3+ and Ba2+ cation content. However, subtle differences occur between the morphological transformation induced by Al3+ and Ba2+. Most strikingly, coils decorated with Al3+ respond very differently to temperature variations than coils decorated with Ba2+ do. As the temperature increases, the poly(styrene sulfonate) chains decrease their size in the presence of Al3+ cations but increase in size in the presence of Ba2+ cations.
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Affiliation(s)
- Markus Hansch
- Universität Paderborn, Physikalische Chemie, D-33098 Paderborn, Germany
| | - Benjamin Hämisch
- Universität Paderborn, Physikalische Chemie, D-33098 Paderborn, Germany
| | - Ralf Schweins
- Large Scale Structures Group (LSS), ILL-Institut Laue-Langevin, F-38000 Grenoble, France
| | - Sylvain Prévost
- Complex Systems and Biomedical Sciences Group (CBS), ESRF-The European Synchrotron, F-38000 Grenoble, France
| | - Klaus Huber
- Universität Paderborn, Physikalische Chemie, D-33098 Paderborn, Germany
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21
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Kim N, Cheng CC, Goh MC. Universal aqueous synthesis of ultra-small polymer-templated nanoparticles: synthesis optimization methodology for counterion-collapsed poly(acrylic acid). CAN J CHEM 2018. [DOI: 10.1139/cjc-2017-0444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A long polyelectrolyte chain collapses into a nano-sized particle upon the addition of counterions under appropriate solution conditions. This phenomenon forms the basis for a simple universal method for aqueous synthesis of ultra-small (<10 nm) metal, metal oxide, and other types of nanoparticles in the following manner: the counterion-collapsed polyelectrolyte chains are made stable by crosslinking, effectively trapping the counterions, which are subsequently chemically modified, to form metal nanoparticles via reduction or metal oxides nanoparticles via oxidation, within the collapsed polymer nanoparticle. This highly versatile platform methodology can be applied to almost any polyelectrolyte–counterion pair, making possible the rapid development of syntheses of different nanoparticles within the same chemical environment. Using poly(acrylic acid) as a model system, a methodology for the optimization of conditions for the polyelectrolyte collapse by various mono- and multi-valent metal cations is developed. The optimal counterion concentration did not correlate with ionic strength and metal ion valency and was highly variable from system to system. By monitoring the polyelectrolyte conformation using viscosity and turbidity measurements, the appropriate metal ion concentration for each nanoparticle system was determined.
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Affiliation(s)
- Nari Kim
- University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
- University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Calvin C.H. Cheng
- University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
- University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - M. Cynthia Goh
- University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
- University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
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22
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Morishima K, Ishiwari F, Matsumura S, Fukushima T, Shibayama M. Mesoscopic Structural Aspects of Ca2+-Triggered Polymer Chain Folding of a Tetraphenylethene-Appended Poly(acrylic acid) in Relation to Its Aggregation-Induced Emission Behavior. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00883] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Ken Morishima
- Institute
for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha,
Kashiwa, Chiba 277-8581, Japan
| | - Fumitaka Ishiwari
- Laboratory
for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Satoko Matsumura
- Laboratory
for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Takanori Fukushima
- Laboratory
for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Mitsuhiro Shibayama
- Institute
for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha,
Kashiwa, Chiba 277-8581, Japan
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23
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Sénéchal V, Saadaoui H, Rodriguez-Hernandez J, Drummond C. Electrowetting of Weak Polyelectrolyte-Coated Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:4996-5005. [PMID: 28497970 DOI: 10.1021/acs.langmuir.7b00473] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Polymer coatings are commonly used to modify interfacial properties like wettability, lubrication, or biocompatibility. These properties are determined by the conformation of polymer molecules at the interface. Polyelectrolytes are convenient elementary bricks to build smart materials, given that polyion chain conformation is very sensitive to different environmental variables. Here we discuss the effect of an applied electric field on the properties of surfaces coated with poly(acrylic acid) brushes. By combining atomic force microscopy, quartz crystal microbalance, and contact angle experiments, we show that it is possible to precisely tune polyion chain conformation, surface adhesion, and surface wettability using very low applied voltages if the polymer grafting density and environmental conditions (pH and ionic strength) are properly formulated. Our results indicate that the effective ionization degree of the grafted weak polyacid can be finely controlled with the externally applied field, with important consequences for the macroscopic surface properties.
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Affiliation(s)
- Vincent Sénéchal
- CNRS, Centre de Recherche Paul Pascal (CRPP), UPR 8641, F-33600 Pessac, France
- Centre de Recherche Paul Pascal, Université de Bordeaux , F-33600 Pessac, France
| | - Hassan Saadaoui
- CNRS, Centre de Recherche Paul Pascal (CRPP), UPR 8641, F-33600 Pessac, France
- Centre de Recherche Paul Pascal, Université de Bordeaux , F-33600 Pessac, France
| | | | - Carlos Drummond
- CNRS, Centre de Recherche Paul Pascal (CRPP), UPR 8641, F-33600 Pessac, France
- Centre de Recherche Paul Pascal, Université de Bordeaux , F-33600 Pessac, France
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24
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25
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Sappidi P, Natarajan U. Effect of salt valency and concentration on structure and thermodynamic behavior of anionic polyelectrolyte Na +-polyethacrylate aqueous solution. J Mol Model 2016; 22:274. [PMID: 27783231 DOI: 10.1007/s00894-016-3144-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 10/09/2016] [Indexed: 11/24/2022]
Abstract
The intermolecular structure and solvation enthalpy of anionic polyelectrolyte atactic Na+-polyethacrylate (PEA) in aqueous solution, as a function of added salt concentration C s (dilute to concentrated) and valency (NaCl versus CaCl2), were investigated via molecular dynamics simulations with explicit-ion-solvent and atomistic polymer description. An increase in C s leads to a decrease in α, which stabilizes to a constant value beyond critical C s. A significant reduction in R g in the presence of CaCl2 salt was observed, due to ion bridging of PEA by Ca2+ ions, in agreement with results available in literature on other similar polycarboxylates. An increase in salt valency reduces the value of critical C s for the onset of stabilization of the overall size and shape of the polymer chain. The critical C s ratio for the divalent to monovalent salt case is in excellent agreement with results of Langevin dynamics studies on model systems available in the literature. PEA-water H-bond half-life increases with C s for CaCl2, but no appreciable effect is seen for NaCl. The hydration of PEA becomes stronger in the presence of divalent salt. The strength of H-bond interaction energy is greater for cations as compared to anions of the salt. The salt cation effect in displacing water molecules from the vicinity of PEA, with increase in C s, is greater for NaCl solution. The decrease in water coordination to PEA carboxylate groups, due to increased C s, is more pronounced in NaCl solution. The nature of the behavior of the solvation enthalpy of PEA and the type of intermolecular interactions contributing to it, is in agreement with experimental observations from the literature. The hydration enthalpy of PEA in divalent CaCl2 aqueous salt solution is more exothermic compared to monovalent NaCl salt solution, in agreement with experimental data. The solvation of PEA is thermodynamically more favorable in the case of CaCl2 solution. The exothermic solvation enthalpy, H-bond lifetime, number of H-bonds and H-bond interaction energy are greater in magnitude in CaCl2 aqueous solution.
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Affiliation(s)
- Praveenkumar Sappidi
- Macromolecular Modeling and Simulation Laboratory, Department of Chemical Engineering, Indian Institute of Technology (IIT) Madras, Chennai, 600036, India
| | - Upendra Natarajan
- Macromolecular Modeling and Simulation Laboratory, Department of Chemical Engineering, Indian Institute of Technology (IIT) Madras, Chennai, 600036, India.
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26
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Wang J, Huang H, Huang X. Molecular weight and the Mark-Houwink relation for ultra-high molecular weight charged polyacrylamide determined using automatic batch mode multi-angle light scattering. J Appl Polym Sci 2016. [DOI: 10.1002/app.43748] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jinfeng Wang
- Nalco, an Ecolab Company; 1601 W. Diehl Rd Naperville Illinois 60563
| | - Heqing Huang
- Nalco, an Ecolab Company; 1601 W. Diehl Rd Naperville Illinois 60563
| | - Xinyu Huang
- Nalco, an Ecolab Company; 1601 W. Diehl Rd Naperville Illinois 60563
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27
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Kikuchi M, Terayama Y, Ishikawa T, Hoshino T, Kobayashi M, Ohta N, Jinnai H, Takahara A. Salt Dependence of the Chain Stiffness and Excluded-Volume Strength for the Polymethacrylate-Type Sulfopropylbetaine in Aqueous NaCl Solutions. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01116] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Moriya Kikuchi
- ERATO,
Takahara Soft Interfaces Project, Japan Science and Technology Agency, 744 Motooka,
Nishi-ku, Fukuoka 819-0395, Japan
| | | | | | - Taiki Hoshino
- ERATO,
Takahara Soft Interfaces Project, Japan Science and Technology Agency, 744 Motooka,
Nishi-ku, Fukuoka 819-0395, Japan
| | - Motoyasu Kobayashi
- ERATO,
Takahara Soft Interfaces Project, Japan Science and Technology Agency, 744 Motooka,
Nishi-ku, Fukuoka 819-0395, Japan
| | - Noboru Ohta
- Japan Synchrotron
Radiation Research Institute/Spring-8, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Hiroshi Jinnai
- ERATO,
Takahara Soft Interfaces Project, Japan Science and Technology Agency, 744 Motooka,
Nishi-ku, Fukuoka 819-0395, Japan
| | - Atsushi Takahara
- ERATO,
Takahara Soft Interfaces Project, Japan Science and Technology Agency, 744 Motooka,
Nishi-ku, Fukuoka 819-0395, Japan
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28
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Talha L, Filali M, Azougarh A, Cipelletti L. Effect of charge polydispersity and charge residence time on the dynamics of a micellar system. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2015; 38:52. [PMID: 26077446 DOI: 10.1140/epje/i2015-15052-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 04/03/2015] [Accepted: 04/16/2015] [Indexed: 06/04/2023]
Abstract
We use dynamic light scattering to investigate the effects of charge polydispersity and charge residence time on the dynamics of a micellar system. While in the corresponding uncharged system only one exponential relaxation is observed, two relaxation modes are seen when charging the micelles by adding charged co-surfactant molecules with a long residence time. We attribute the existence of these two relaxation modes to the combined effect of size polydispersity and charge polydispersity, i.e. frozen fluctuations of the number of charges per micelle. Further support to this scenario is provided by control experiments on a similar charged system, but where the charge residence time is short compared to the time scales probed by dynamic light scattering. Here, charge polydispersity is effectively suppressed due to the rapid exchange of charged molecules between micelles and only one single relaxation mode is seen, thereby demonstrating the key role of frozen charge fluctuations in the complex dynamics of our micellar system.
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Affiliation(s)
- Lamiae Talha
- Laboratoire de Physique théorique et appliquée, Université Sidi Mohamed Ben Abdellah, Faculté des Sciences, Dhar El Mahraz, BP 1796 Fes, Atlas, Morocco
| | - Mohammed Filali
- Laboratoire de Physique théorique et appliquée, Université Sidi Mohamed Ben Abdellah, Faculté des Sciences, Dhar El Mahraz, BP 1796 Fes, Atlas, Morocco
| | - Abdelhafid Azougarh
- Laboratoire de Physique théorique et appliquée, Université Sidi Mohamed Ben Abdellah, Faculté des Sciences, Dhar El Mahraz, BP 1796 Fes, Atlas, Morocco
| | - Luca Cipelletti
- Laboratoire Charles Coulomb (L2C), UMR 5221 CNRS-Université de Montpellier, Montpellier, F-France.
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29
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Ezhova A, Huber K. Specific Interactions of Ag+ Ions with Anionic Polyacrylate Chains in Dilute Solution. Macromolecules 2014. [DOI: 10.1021/ma501146m] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A. Ezhova
- Physical Chemistry, University of Paderborn, 33098 Paderborn, Germany
| | - K. Huber
- Physical Chemistry, University of Paderborn, 33098 Paderborn, Germany
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30
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Sitar S, Aseyev V, Kogej K. Microgel-like aggregates of isotactic and atactic poly(methacrylic acid) chains in aqueous alkali chloride solutions as evidenced by light scattering. SOFT MATTER 2014; 10:7712-7722. [PMID: 25137480 DOI: 10.1039/c4sm01448k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A comparative light-scattering study of isotactic and atactic poly(methacrylic acid), iPMA and aPMA, respectively, in aqueous solutions with added alkali chlorides, XCl (X = Li, Na, Cs), at 25 °C and XCl concentration of 0.1 mol L(-1), demonstrates that both PMA isomers are strongly associated at low degrees of neutralization, αN (= 0 for aPMA and 0.25 for iPMA), in the presence of all XCls. The shape parameter ρ and the scattering functions suggest that aggregates have the characteristics of microgel particles, with a dense core surrounded by a less dense shell. The extent of aggregation depends on the stereoregular structure of the polymer and on the type of the added cation. Li(+) and Na(+) ions support aggregation better than Cs(+) ions. Besides, iPMA chains are more strongly aggregated than aPMA chains and form particles with a denser core. A model of the aggregation process is suggested for iPMA. At high αN, a slow diffusive process (so-called extraordinary or anomalous mode in diffusion of polyelectrolytes), arising from electrostatic interactions between charged chains, is observed for both PMAs. Results suggest that under the same experimental conditions iPMA is effectively more charged than aPMA. The role of ions in the slow-mode phenomenon is less pronounced than in aggregation.
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Affiliation(s)
- Simona Sitar
- Department of Chemistry and Biochemistry, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerčeva 5, P.O. Box 537, SI-1001, Ljubljana, Slovenia.
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31
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Physicochemical study by multi-angle light scattering of water-soluble methacryloylaminophenylarsonate copolymers. JOURNAL OF POLYMER RESEARCH 2014. [DOI: 10.1007/s10965-014-0492-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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32
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Castellani R, Poulesquen A, Goettmann F, Marchal P, Choplin L. Efficiency enhancement of decontamination gels by a superabsorbent polymer. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.04.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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33
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Wijting WK, van Reenen A, Laven J, van Benthem RA, de With G. Competitive adsorption of (phosphorylated) ethoxylated styrene oxide polymer and polyacrylic acid on silica coated iron oxide pigment. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.02.036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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34
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Sitar S, Aseyev V, Kogej K. Differences in association behavior of isotactic and atactic poly(methacrylic acid). POLYMER 2014. [DOI: 10.1016/j.polymer.2014.01.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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35
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Nguyen T, Xie Y, de Vreede LJ, van den Berg A, Eijkel JCT. Highly enhanced energy conversion from the streaming current by polymer addition. LAB ON A CHIP 2013; 13:3210-6. [PMID: 23775162 DOI: 10.1039/c3lc41232f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
In this contribution, we present for the first time the experimental results of energy conversion from the streaming current when a polymer is added to the working solution. We added polyacrylic acid (PAA) in concentrations of 200 ppm to 4000 ppm to a KCl solution. By introducing PAA, the input power, which is the product of volumetric flow rate and the applied pressure, reduced rapidly as compared to the case of using only a normal viscous electrolyte KCl solution. The output power at the same time remained largely constant, whereby an increase of the streaming current and a decrease of the streaming potential simultaneously occurred. These combined factors led to the massive increase of the energy conversion efficiency. Particularly, the results showed that when PAA was in a 0.01 mM KCl solution, the energy conversion efficiency of the system was enhanced by a factor of 447 (±2%), as compared to the case of the solution containing only 0.01 mM KCl. An enhancement factor of 249 (±4%) was also observed when PAA was added to the higher ionic strength background solution, 1 mM KCl. This finding can have practical use in microchannel-array energy conversion systems. When, instead of the negatively charged PAA, a non-ionic polymer polyethylene oxide (PEO) was added to the solution, no efficiency increase was observed, probably due to polymer wall adsorption.
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Affiliation(s)
- Trieu Nguyen
- BIOS lab on chip group, MESA+ Institution of Nanotechnology, University of Twente, Enschede, The Netherlands
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36
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Ishikawa T, Kikuchi M, Kobayashi M, Ohta N, Takahara A. Chain Conformation of Poly[2-(methacryloyloxy)ethyltrimethylammonium chloride] in Aqueous Sodium Chloride Solutions. Macromolecules 2013. [DOI: 10.1021/ma4001868] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tatsuya Ishikawa
- Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395,
Japan
| | - Moriya Kikuchi
- Japan Science and
Technology
Agency, ERATO, Takahara Soft Interfaces Project, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395,
Japan
| | - Motoyasu Kobayashi
- Japan Science and
Technology
Agency, ERATO, Takahara Soft Interfaces Project, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395,
Japan
| | - Noboru Ohta
- Japan Synchrotron Radiation Research Institute/SPring-8, 1-1-1, Kouto,
Sayo-cho, Sayo-gun, Hyogo 679-5198 Japan
| | - Atsushi Takahara
- Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395,
Japan
- Japan Science and
Technology
Agency, ERATO, Takahara Soft Interfaces Project, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395,
Japan
- Institute for Materials Chemistry
and Engineering, Kyushu University, 744
Motooka, Nishi-ku, Fukuoka 819-0395, Japan
- International Institute for
Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
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37
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Lages S, Goerigk G, Huber K. SAXS and ASAXS on Dilute Sodium Polyacrylate Chains Decorated with Lead Ions. Macromolecules 2013. [DOI: 10.1021/ma400427d] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sebastian Lages
- Department of Chemistry,
Physical Chemistry, University of Paderborn, Warburger Str. 100, 33098
Paderborn, Germany
| | - Günter Goerigk
- Department of Chemistry,
Physical Chemistry, University of Paderborn, Warburger Str. 100, 33098
Paderborn, Germany
| | - Klaus Huber
- Department of Chemistry,
Physical Chemistry, University of Paderborn, Warburger Str. 100, 33098
Paderborn, Germany
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38
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Enhanced Ca2+ binding with sulfonic acid type polymers at increased temperatures. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2012.09.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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39
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Takeno H, Nakamura W. Structural and mechanical properties of composite hydrogels composed of clay and a polyelectrolyte prepared by mixing. Colloid Polym Sci 2012. [DOI: 10.1007/s00396-012-2871-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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40
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Liu J, Pancera S, Boyko V, Gummel J, Nayuk R, Huber K. Impact of sodium polyacrylate on the amorphous calcium carbonate formation from supersaturated solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:3593-3605. [PMID: 22256962 DOI: 10.1021/la203895d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A detailed in situ scattering study has been carried out on the formation of amorphous calcium carbonate (ACC) particles modulated by the presence of small amounts of sodium polyacrylate chains. The work is aiming at an insight into the modulation of ACC formation by means of two polyacrylate samples differing in their molecular weight by a factor of 50. The ACC formation process was initiated by an in situ generation of CO(3)(2-) ions via hydrolysis of 10 mM dimethylcarbonate in the presence of 10 mM CaCl(2). Analysis of the formation process by means of time-resolved small-angle X-ray and light scattering in the absence of any additives provided evidence for a monomer addition mechanism for the growth of ACC particles. ACC formation under these conditions sets in after a lag-period of some 350 s. In the presence of sodium polyacrylate chains, calcium polyacrylate aggregates are formed during the lag-period, succeeded by a modulated ACC growth in a second step. The presence of anionic polyacrylate chains changed the shape of the growing particles toward loose and less homogeneous entities. In the case of low amounts (1.5-7.5 mg/L) of the long chain additive with 97 kDa, the size of the aggregates is comparable to the size of the successively formed hybrid particles. No variation of the lag-period has been observed in this case. Use of the short chain additive with 2 kDa enabled increase of the additive concentration up to 100 mg/L and resulted in a significant increase of the lag-period. This fact, together with the finding that the resulting hybrid particles remained stable in the latter case, identified short chain sodium polyacrylates as more efficient modulators than long chain polyacrylates.
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Affiliation(s)
- J Liu
- Chemistry Department, Universität Paderborn, Warburger Str. 100, D-33098 Paderborn
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41
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Terao K, Kanenaga R, Sato T, Mizuno K, Bächinger HP. Complex Formation of Collagen Model Peptides with Polyelectrolytes and Stabilization of the Triple Helical Structure. Macromolecules 2011. [DOI: 10.1021/ma202176w] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Ken Terao
- Department of Macromolecular Science, Osaka University, 1-1, Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan
- Research Department, Shriners Hospital for Children, Portland, Oregon 97239, United States
| | - Ryoko Kanenaga
- Department of Macromolecular Science, Osaka University, 1-1, Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan
| | - Takahiro Sato
- Department of Macromolecular Science, Osaka University, 1-1, Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan
| | - Kazunori Mizuno
- Research Department, Shriners Hospital for Children, Portland, Oregon 97239, United States
| | - Hans Peter Bächinger
- Research Department, Shriners Hospital for Children, Portland, Oregon 97239, United States
- Department of Biochemistry and Molecular Biology, Oregon Health & Science University, Portland, Oregon 97239, United States
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42
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Kunze C, Valtiner M, Michels R, Huber K, Grundmeier G. Self-localization of polyacrylic acid molecules on polar ZnO(0001)-Zn surfaces. Phys Chem Chem Phys 2011; 13:12959-67. [PMID: 21691646 DOI: 10.1039/c1cp20913b] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The adsorption of single polyacrylic acid (PAAc) molecules was investigated on stepped hydroxide-stabilized polar ZnO(0001)-Zn surfaces using atomic force microscope (AFM) topography and force distance spectroscopy. Stepped surfaces of ZnO(0001)-Zn were prepared by a wet chemical etching procedure and PAAc molecules were adsorbed from aqueous NaClO(4) solutions. AFM single molecule topography studies could be utilized to show that polyacrylic acid molecules specifically adsorb on the non-polar (10-10) step edge faces at low ionic strengths. The radius of gyration of the dissolved PAAc in aqueous solution was measured by means of static light scattering experiments yielding a radius of gyration of R(g)=136 nm at pH 7.4 in 50 mM NaClO(4)/NaOH solution, which is in good agreement with the size of the adsorbed PAAc molecules as measured using AFM. The obtained results could be rationalized in terms of binding-site configurations at step edges and the effect of the chemical environment on both local electric double layer charge and molecular conformation of the PAAc molecules. The point of zero charge of the ZnO(10-10) surface was measured with chemical force microscopy to be pH(PZC)=10.2 ± 0.2. The specific adsorption of polyacrylic acid at non-polar ZnO step-edges can be explained by coordinative bonds formed between the carboxylic acid group and the Zn-surface atoms. On the hydroxide stabilized polar surface only weak hydrogen bonds can be formed in addition to van-der-Waals forces. Thus a "diffusion and trapping" mechanism keeps the adsorbed PAAc molecules mobile on the ZnO(0001)-Zn surface terraces due to small interaction forces until they are trapped at the (10-10) step faces by stronger coordinative bonds from the carboxylic groups to zinc atoms located in the first atomic layer of the crystal structure.
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Affiliation(s)
- Christian Kunze
- University of Paderborn, Technical and Macromolecular Chemistry, Warburger Str. 100, 33098 Paderborn, Germany
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43
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Knappe P, Bienert R, Weidner S, Thünemann AF. Poly(acrylic acid): A Combined Analysis with Field-Flow Fractionation and SAXS. MACROMOL CHEM PHYS 2010. [DOI: 10.1002/macp.201000163] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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44
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Karayianni M, Mountrichas G, Pispas S. Solution Behavior of Poly(sodium(sulfamate-carboxylate)isoprene), a pH Sensitive and Intrinsically Hydrophobic Polyelectrolyte. J Phys Chem B 2010; 114:10748-55. [DOI: 10.1021/jp104838f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Maria Karayianni
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
| | - Grigoris Mountrichas
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
| | - Stergios Pispas
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
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45
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Lages S, Michels R, Huber K. Coil-Collapse and Coil-Aggregation due to the Interaction of Cu2+ and Ca2+ Ions with Anionic Polyacylate Chains in Dilute Solution. Macromolecules 2010. [DOI: 10.1021/ma9027239] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- S. Lages
- Department Chemie, Universität Paderborn, Fakultät für Naturwissenschaften, Warburger Strasse 100, D-33098 Paderborn, Germany
| | - R. Michels
- Department Chemie, Universität Paderborn, Fakultät für Naturwissenschaften, Warburger Strasse 100, D-33098 Paderborn, Germany
| | - K. Huber
- Department Chemie, Universität Paderborn, Fakultät für Naturwissenschaften, Warburger Strasse 100, D-33098 Paderborn, Germany
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46
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Strandberg C, Rosenauer C, Wegner G. Poly(vinyl phosphonic acid): Hydrodynamic Properties and SEC-Calibration in Aqueous Solution. Macromol Rapid Commun 2009; 31:374-9. [PMID: 21590916 DOI: 10.1002/marc.200900605] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2009] [Indexed: 11/12/2022]
Abstract
Poly(vinyl phosphonic acid) (PVPA) as obtained by free radical polymerization of aqueous vinyl phosphonic acid was studied by light scattering (SLS, DLS) and size exclusion chromatography (SEC) in dilute aqueous solutions containing sufficient salt in order to screen long range electrostatic interactions. Samples of 37<$\overline M _{\rm w}$< 110 × 10(3) were studied. The polymers showed positive A(2) -values in aqueous NaH(2) PO(4) solution (0.04 M), and self-diffusion behavior and R(H) /R(G) -ratios indicative of the structure of random coiled chains. A comparison of the SEC-elugrams of the PVPA-samples with those of commercially available standards of poly(acrylic acid) sodium salt gave a fit to the same calibration curve described by log P(n(PVPA)) = -0.21ν(e) + 7.0(+0.1) which correlates the number average degree of polymerization (P(n) ) with the elution volume ν(e) . This indicates that PVPA and PAA have the same hydrodynamic structure under given solution conditions.
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Affiliation(s)
- Clara Strandberg
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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47
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Lages S, Lindner P, Sinha P, Kiriy A, Stamm M, Huber K. Formation of Ca2+-Induced Intermediate Necklace Structures of Polyacrylate Chains. Macromolecules 2009. [DOI: 10.1021/ma8027547] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sebastian Lages
- Chemsitry Department, Universität Paderborn, Warburger Strasse 100, D-33098 Paderborn, Germany
| | - Peter Lindner
- Institute Laue-Langevin, LSS Group, B.P. 156, 6, rue Jules Horowitz, F-38042, Grenoble, Cedex 9, France
| | - Prashant Sinha
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, 01069 Dresden, Germany
| | - Anton Kiriy
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, 01069 Dresden, Germany
| | - Manfred Stamm
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, 01069 Dresden, Germany
| | - Klaus Huber
- Chemsitry Department, Universität Paderborn, Warburger Strasse 100, D-33098 Paderborn, Germany
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48
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Sivtsov EV, Chernikova EV, Terpugova PS, Yasnogorodskaya OG. Influence of the microstructure of acrylic acid-n-butyl acrylate copolymers prepared by pseudoliving radical polymerization by the reversible addition-fragmentation chain transfer mechanism on their surface activity in aqueous solutions. RUSS J APPL CHEM+ 2009. [DOI: 10.1134/s1070427209040181] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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49
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Otegui J, Fernández E, Rubio-Retama J, López-Cabarcos E, Mijangos C, López D. Swelling and viscoelastic properties of new magnesium acrylate hydrogels. POLYM ENG SCI 2009. [DOI: 10.1002/pen.21293] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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50
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Kumar R, Kundagrami A, Muthukumar M. Counterion adsorption on flexible polyelectrolytes: comparison of theories. Macromolecules 2009; 42:1370-1379. [PMID: 20686641 DOI: 10.1021/ma801799e] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Counterion adsorption on a flexible polyelectrolyte chain in a spherical cavity is considered by taking a "permuted" charge distribution on the chain so that the "adsorbed" counterions are allowed to move along the backbone. We compute the degree of ionization by using self-consistent field theory (SCFT) and compare with the previously developed variational theory. Analysis of various contributions to the free energy in both theories reveals that the equilibrium degree of ionization is attained mainly as an interplay of the adsorption energy of counterions on the backbone, the translational entropy of the small ions, and their correlated density fluctuations. Degree of ionization computed from SCFT is significantly lower than that from the variational formalism. The difference is entirely due to the density fluctuations of the small ions in the system, which are accounted for in the variational procedure. When these fluctuations are deliberately suppressed in the truncated variational procedure, there emerges a remarkable quantitative agreement in the various contributing factors to the equilibrium degree of ionization, in spite of the fundamental differences in the approximations and computational procedures used in these two schemes. Furthermore, it is found that the total free energies from the truncated variational procedure and the SCFT are in quantitative agreement at low monomer densities and differ from each other at higher monomer densities. The disagreement at higher monomer densities is due to the inability of the variational calculation to accurately compute the solvent entropy at higher concentrations. A comparison of electrostatic energies (which are relatively small) reveals that the Debye-Hückel estimate used in the variational theory is an overestimation of electrostatic energy as compared to the Poisson-Boltzmann estimate. Nevertheless, since the significant effects from density fluctuations of small ions are not captured by the SCFT, and due to the close agreement between SCFT and the other contributing factors in the more transparent variational procedure, the latter is a better computational tool for obtaining the degree of ionization.
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Affiliation(s)
- Rajeev Kumar
- Dept. of Polymer Science & Engineering, Materials Research Science & Engineering Center, University of Massachusetts, Amherst, MA-01003, USA
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