Characterization of Styrene/<i>n</i>-Butyl Acrylate Copolymer by Electrospray Ionization-Ion Mobility Spectrometry-Mass Spectrometry

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  • OZEKI Yuka
    Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
  • KITAGAWA Shinya
    Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
  • OHTANI Hajime
    Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
  • KONDO Yosuke
    Mitsubishi Chemical Corporation
  • SHINADA Hiroko
    Mitsubishi Chemical Corporation

Bibliographic Information

Other Title
  • エレクトロスプレーイオン化−イオンモビリティスペクトロメトリー−質量分析法によるスチレン/アクリル酸<i>n</i>-ブチル共重合体の解析

Abstract

<p>Styrene/n-butyl acrylate copolymer (number average molecular weight: 2700, weight average molecular weight: 6100, polydispersity: 2.3) synthesized by radical polymerization was analyzed by two types of mass spectrometry (MS). In the analysis using matrix assisted laser desorption ionization-MS, signals were observed up to a molecular weight of about 5000. On the other hand, in the analysis using electrospray ionization-ion mobility spectrometry-MS (ESI-IMS-MS), signals were observed up to a molecular weight of about 9000 (m/z 2200 in charge number of 4 from the IMS distribution). Extracted MS spectra obtained from ESI-IMS-MS were analyzed by Kendrick mass defect plot. Copolymer compositions (both terminal structures derived from the initiator, which can be produced by the recombination reaction) could be analyzed up to a molecular weight of 7800. This range corresponds to about 80 % of the copolymer molecular weight distribution measured in size exclusion chromatography using polystyrene standards. It was confirmed that ESI-IMS-MS is more effective for the analysis of synthetic polymers with high polydispersity.</p>

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 71 (10.11), 563-570, 2022-10-05

    The Japan Society for Analytical Chemistry

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