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MIZUTANI C, KITAGAWA S, IIGUNI Y, OHTANI H. Nonaqueous Capillary Zone Electrophoresis for Polyesters and Polyamides Using Hexafluoroisopropyl Alcohol as Electrophoretic Medium. CHROMATOGRAPHY 2022. [DOI: 10.15583/jpchrom.2022.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Chisato MIZUTANI
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
| | - Shinya KITAGAWA
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
| | - Yoshinori IIGUNI
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
| | - Hajime OHTANI
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
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Brooijmans T, Breuer P, Schreuders A, van Tilburg M, Schoenmakers PJ, Peters RAH. Charge-Based Separation of Acid-Functional Polymers by Non-aqueous Capillary Electrophoresis Employing Deprotonation and Heteroconjugation Approaches. Anal Chem 2021; 93:5924-5930. [PMID: 33794091 DOI: 10.1021/acs.analchem.1c00311] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Water-borne polymers are in ever-increasing demand due to their favorable ecological profile compared to traditional solvent-borne polymer systems. Many water-borne polymer particles are stabilized in aqueous media by the incorporation of acid-functional monomers. Due to the large variety of comonomers applied, these water-borne polymers have various superimposed statistical distributions, which make it challenging to obtain in-depth information regarding incorporation of the acidic monomers. For selective analysis of the incorporated acidic monomers, a charge-based non-aqueous capillary electrophoresis (NACE) separation was developed. Two approaches were developed: (i) deprotonation of the acid functionality with an organically soluble strong base and (ii) heteroconjugation of anions of carboxylic acids with incorporated acid functionality. In both approaches, N-methylpyrrolidone, as a strong solvent for polymers with a favorable relative permittivity for the presence of dissociated ionic species, was used for the separation. It was shown that anions of carboxylic acids specifically associate with the incorporated acid groups in the polymers, resulting in negatively charged complexes that could be separated based on charge-to-size ratio by NACE. Although both approaches give comparable results with respect to acid distribution for acid-functional polymers, the effective mobility of the deprotonated polymers is roughly double that obtained from the heteroconjugation approach. Unlike the heteroconjugation approach, deprotonation conditions were detrimental to the fused-silica capillary, limiting practical use. Polymers with different chemical compositions, molecular weights, and acid contents were subjected to the CE approaches developed. Polymers with varying molecular weight but similar relative acid monomer content were shown to have similar migration times, which confirms that this approach separates polymers based on charge-to-size ratio.
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Affiliation(s)
- Ton Brooijmans
- Analytical Technology Centre, DSM Coating Resins, Sluisweg 12, 5145PE Waalwijk, The Netherlands.,Van't Hoff Institute for Molecular Science (HIMS), University of Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands.,Centre for Analytical Sciences Amsterdam, 1098HX Amsterdam, The Netherlands
| | - Pascal Breuer
- Van't Hoff Institute for Molecular Science (HIMS), University of Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands.,Centre for Analytical Sciences Amsterdam, 1098HX Amsterdam, The Netherlands
| | - Aniek Schreuders
- Analytical Technology Centre, DSM Coating Resins, Sluisweg 12, 5145PE Waalwijk, The Netherlands
| | - Myrthe van Tilburg
- Analytical Technology Centre, DSM Coating Resins, Sluisweg 12, 5145PE Waalwijk, The Netherlands
| | - Peter J Schoenmakers
- Van't Hoff Institute for Molecular Science (HIMS), University of Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands.,Centre for Analytical Sciences Amsterdam, 1098HX Amsterdam, The Netherlands
| | - Ron A H Peters
- Analytical Technology Centre, DSM Coating Resins, Sluisweg 12, 5145PE Waalwijk, The Netherlands.,Van't Hoff Institute for Molecular Science (HIMS), University of Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands.,Centre for Analytical Sciences Amsterdam, 1098HX Amsterdam, The Netherlands
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TANAKA N, KITAGAWA S, OHTANI H, IWAMA Y, KONDO K, ISHIGAKI Y, SHIBATA N, KINOSHITA T, KAMIMOTO Y, ICHINO R. Evaluation of the Interactions Between Palladium(II) and <i>N</i>,<i>N</i>’-Dimethyl-<i>N</i>,<i>N</i>’-di-<i>n</i>-hexyl-thiodiglycolamide in the Presence of Surfactants Using Capillary Electrophoresis. CHROMATOGRAPHY 2019. [DOI: 10.15583/jpchrom.2019.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Nana TANAKA
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
| | - Shinya KITAGAWA
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
| | - Hajime OHTANI
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
| | - Yuki IWAMA
- Nagoya Municipal Industrial Research Institute
| | | | | | | | | | - Yuki KAMIMOTO
- Institute of Material Innovation, Institutes of Innovation for Future Society, Nagoya University
| | - Ryoichi ICHINO
- Institute of Material Innovation, Institutes of Innovation for Future Society, Nagoya University
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UCHIDA S, KITAGAWA S, IIGUNI Y, OHTANI H. Electrophoretic Behavior in Nonaqueous Capillary Zone Electrophoresis Using Tetrahydrofuran-Based Ternary Nonaqueous Solutions. CHROMATOGRAPHY 2018. [DOI: 10.15583/jpchrom.2018.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Soichiro UCHIDA
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
| | - Shinya KITAGAWA
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
| | - Yoshinori IIGUNI
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
| | - Hajime OHTANI
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
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FUKAI N, KITAGAWA S, OHTANI H. Separation of Water-Insoluble and Neutral Linear Synthetic Polymers in Nonaqueous Capillary Zone Electrophoresis Using Phosphonium-Based Ionic Liquid. CHROMATOGRAPHY 2017. [DOI: 10.15583/jpchrom.2017.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Nao FUKAI
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
| | - Shinya KITAGAWA
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
| | - Hajime OHTANI
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
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