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Teh EJ, Leong YK, Zhang X, Fan H, Gan Y, Becker T. Hydrophobic interaction and patch charge attraction in α-Al2O3 dispersions under the influence of adsorbed low molecular-weight polyacrylic acid sodium salt and poly(methacrylic acid) sodium salt: yield stress and AFM force study. Colloid Polym Sci 2016. [DOI: 10.1007/s00396-016-3941-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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2
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Alam MM, Hashimoto K, Yamaguchi C, Yusa SI, Nakashima K. Synthesis of Zinc Borate Hollow Nanospheres Using Polymeric Micelles with Core–Corona Architecture as a Template. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2015. [DOI: 10.1246/bcsj.20140238] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Mohammad Mydul Alam
- Department of Chemistry, Graduate School of Science and Engineering, Saga University
| | - Kimiko Hashimoto
- Department of Chemistry, Graduate School of Science and Engineering, Saga University
| | - Chihiro Yamaguchi
- Department of Chemistry, Graduate School of Science and Engineering, Saga University
| | - Shin-ichi Yusa
- Department of Materials Science and Chemistry, University of Hyogo
| | - Kenichi Nakashima
- Department of Chemistry, Graduate School of Science and Engineering, Saga University
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Abstract
Polyelectrolytes (PEs) are widely used in applications such as water purification, wastewater treatment, and mineral recovery. Although much has been learned in past decades about the behavior of PEs in bulk aqueous solutions, their molecular behavior at a surface, and particularly an oil-water interface where many of their applications are most relevant, is largely unknown. From these surface spectroscopic and thermodynamics studies we report the unique molecular characteristics that several common polyelectrolytes, poly(acrylic acid) and poly(methylacrylic acid), exhibit when they adsorb at a fluid interface between water and a simple insoluble organic oil. These PEs are found to adsorb to the interface from aqueous solution in a multistepped process with a very thin initial layer of oriented polymer followed by multiple layers of randomly oriented polymer. This additional layering is thwarted when the PE conformation is constrained. The adsorption/desorption process is highly pH dependent and distinctly different than what might be expected from bulk aqueous phase behavior.
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Lacík I, Učňová L, Kukučková S, Buback M, Hesse P, Beuermann S. Propagation Rate Coefficient of Free-Radical Polymerization of Partially and Fully Ionized Methacrylic Acid in Aqueous Solution. Macromolecules 2009. [DOI: 10.1021/ma9013516] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Igor Lacík
- Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 842 36 Bratislava, Slovakia
| | - Lucia Učňová
- Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 842 36 Bratislava, Slovakia
| | - Silvia Kukučková
- Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 842 36 Bratislava, Slovakia
- Institute of Physical Chemistry, Georg-August-University Göttingen, Tammannstrasse 6, D-37077, Göttingen, Germany
| | - Michael Buback
- Institute of Physical Chemistry, Georg-August-University Göttingen, Tammannstrasse 6, D-37077, Göttingen, Germany
| | - Pascal Hesse
- Institute of Physical Chemistry, Georg-August-University Göttingen, Tammannstrasse 6, D-37077, Göttingen, Germany
| | - Sabine Beuermann
- Institute of Physical Chemistry, Georg-August-University Göttingen, Tammannstrasse 6, D-37077, Göttingen, Germany
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Khanal A, Yusa SI, Nakashima K. Nanoaggregates of ABC-type triple hydrophilic block copolymers by binding of cationic surfactant. Colloids Surf A Physicochem Eng Asp 2008. [DOI: 10.1016/j.colsurfa.2008.01.043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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6
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Herrmann A. Controlled Release of Volatiles under Mild Reaction Conditions: From Nature to Everyday Products. Angew Chem Int Ed Engl 2007; 46:5836-63. [PMID: 17605134 DOI: 10.1002/anie.200700264] [Citation(s) in RCA: 144] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Volatile organic compounds serve in nature as semiochemicals for communication between species, and are often used as flavors and fragrances in our everyday life. The quite limited longevity of olfactive perception has led to the development of pro-perfumes or pro-fragrances--ideally nonvolatile and odorless fragrance precursors which release the active volatiles by bond cleavage. Only a limited amount of reaction conditions, such as hydrolysis, temperature changes, as well as the action of light, oxygen, enzymes, or microorganisms, can be used to liberate the many different chemical functionalities. This Review describes the controlled chemical release of fragrances and discusses additional challenges such as precursor stability during product storage as well as some aspects concerning toxicity and biodegradability. As the same systems can be applied in different areas of research, the scope of this Review covers fragrance delivery as well as the controlled release of volatiles in general.
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Affiliation(s)
- Andreas Herrmann
- Firmenich SA, Division Recherche et Développement, Route des Jeunes 1, B. P. 239, 1211 Genève 8, Switzerland.
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Herrmann A. Kontrollierte Freisetzung flüchtiger Verbindungen unter milden Reaktionsbedingungen: von der Natur zu Alltagsprodukten. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200700264] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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8
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Amphiphilic Polymethacrylate- and Polystyrene-Based Chemical Delivery Systems for Damascones. Helv Chim Acta 2005. [DOI: 10.1002/hlca.200590249] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Ludwigs S, Schmidt K, Krausch G. One-Dimensional Swelling of a pH-Dependent Nanostructure Based on ABC Triblock Terpolymers. Macromolecules 2005. [DOI: 10.1021/ma047812q] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sabine Ludwigs
- Physikalische Chemie II and Bayreuther Zentrum für Kolloide und Grenzflächen (BZKG), Universität Bayreuth, D-95440 Bayreuth, Germany
| | - Kristin Schmidt
- Physikalische Chemie II and Bayreuther Zentrum für Kolloide und Grenzflächen (BZKG), Universität Bayreuth, D-95440 Bayreuth, Germany
| | - Georg Krausch
- Physikalische Chemie II and Bayreuther Zentrum für Kolloide und Grenzflächen (BZKG), Universität Bayreuth, D-95440 Bayreuth, Germany
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Khanal A, Li Y, Takisawa N, Kawasaki N, Oishi Y, Nakashima K. Morphological change of the micelle of poly(styrene)-b-poly(2-vinylpyridine)-b-poly(ethylene oxide) induced by binding of sodium dodecyl sulfate. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2004; 20:4809-12. [PMID: 15984235 DOI: 10.1021/la049762o] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Morphological change of a micelle of poly(styrene)-b-poly(2-vinylpyridine)-b-poly(ethylene oxide) (PS-PVP-PEO) polymer was induced by binding sodium dodecyl sulfate (SDS) to the PVP block in acidic aqueous solutions. The change in the size of SDS/PS-PVP-PEO complexes was detected by dynamic light scattering measurements and atomic force microscopy, and the binding of SDS was confirmed by zeta-potential measurements. When the micelle was free from SDS in acidic aqueous solutions, the hydrodynamic diameter of the micelle was 216 nm, reflecting the extended conformation of the PVP block due to the repulsion between protonated pyridine units. As the cationic PVP block was electrically neutralized with anionic SDS, the diameter was gradually reduced concomitant with the decrease in zeta-potential and finally reached 175 nm when the PVP block was completely neutralized. The decrease in the diameter shows the morphological change of the PVP block from extended to shrunken forms. Further addition of SDS did not cause the changes of the diameter nor zeta-potential. This indicates that SDS was not bound to the PS-PVP-PEO polymer after the PVP block was fully neutralized and that the hydrophobic binding of SDS to the polymer was negligible due to the low concentration of SDS.
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Pinteala M, Epure V, Harabagiu V, Simionescu BC, Schlick S. Concentration- and pH-Dependent Conformational Changes and Aggregation of Block Copolymers of Poly(methacrylic acid) and Poly(dimethylsiloxane) in Aqueous Media, Based on Fluorescence Spectra of Pyrene and Potentiometry. Macromolecules 2004. [DOI: 10.1021/ma0496697] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mariana Pinteala
- “Petru Poni” Institute of Macromolecular Chemistry, 700487 Iaşi, Romania, Department of Macromolecules, “Gh. Asachi” Technical University, 700050 Iaşi, Romania, and Department of Chemistry and Biochemistry, University of Detroit Mercy, Detroit, Michigan 48219-0900
| | - Virginia Epure
- “Petru Poni” Institute of Macromolecular Chemistry, 700487 Iaşi, Romania, Department of Macromolecules, “Gh. Asachi” Technical University, 700050 Iaşi, Romania, and Department of Chemistry and Biochemistry, University of Detroit Mercy, Detroit, Michigan 48219-0900
| | - Valeria Harabagiu
- “Petru Poni” Institute of Macromolecular Chemistry, 700487 Iaşi, Romania, Department of Macromolecules, “Gh. Asachi” Technical University, 700050 Iaşi, Romania, and Department of Chemistry and Biochemistry, University of Detroit Mercy, Detroit, Michigan 48219-0900
| | - Bogdan C. Simionescu
- “Petru Poni” Institute of Macromolecular Chemistry, 700487 Iaşi, Romania, Department of Macromolecules, “Gh. Asachi” Technical University, 700050 Iaşi, Romania, and Department of Chemistry and Biochemistry, University of Detroit Mercy, Detroit, Michigan 48219-0900
| | - Shulamith Schlick
- “Petru Poni” Institute of Macromolecular Chemistry, 700487 Iaşi, Romania, Department of Macromolecules, “Gh. Asachi” Technical University, 700050 Iaşi, Romania, and Department of Chemistry and Biochemistry, University of Detroit Mercy, Detroit, Michigan 48219-0900
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Monitoring pH-dependent conformational changes in aqueous solutions of poly(methacrylic acid)-b-polydimethylsiloxane copolymer based on fluorescence spectra of pyrene and 1,3-bis(1-pyrenyl)propane. POLYMER 2004. [DOI: 10.1016/j.polymer.2004.03.101] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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Maliakal A, Weber M, Turro NJ, Green MM, Yang SY, Pearsall S, Lee MJ. Chemically Induced Dynamic Electron Polarization Studies of a pH-Dependent Free Radical Cage Formed in a Photoinitiator Labeled Poly(methacrylic acid). Macromolecules 2002. [DOI: 10.1021/ma020720l] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ashok Maliakal
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, and Herman F. Mark Polymer Research Institute, Polytechnic University, 6 Metrotech Center, Brooklyn, New York 11201
| | - Matthias Weber
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, and Herman F. Mark Polymer Research Institute, Polytechnic University, 6 Metrotech Center, Brooklyn, New York 11201
| | - Nicholas J. Turro
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, and Herman F. Mark Polymer Research Institute, Polytechnic University, 6 Metrotech Center, Brooklyn, New York 11201
| | - Mark M. Green
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, and Herman F. Mark Polymer Research Institute, Polytechnic University, 6 Metrotech Center, Brooklyn, New York 11201
| | - Sung Yun Yang
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, and Herman F. Mark Polymer Research Institute, Polytechnic University, 6 Metrotech Center, Brooklyn, New York 11201
| | - Scott Pearsall
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, and Herman F. Mark Polymer Research Institute, Polytechnic University, 6 Metrotech Center, Brooklyn, New York 11201
| | - Myung-Jin Lee
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, and Herman F. Mark Polymer Research Institute, Polytechnic University, 6 Metrotech Center, Brooklyn, New York 11201
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