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<p>Synthetic copolymer, as high-molecular compounds, are constructed by the linkage of numerous monomer molecules via chemical bonds. The distribution of monomer sequences within polymers exerts a direct influence on their properties and applications. Thus, comprehensive analysis of monomer sequence distribution constitutes a critical research focus in polymer science, particularly for establishing structure-property correlations and guiding the rational design of advanced polymeric materials. This review mainly outlines three principal analytical approaches: 1) nuclear magnetic resonance spectroscopy (NMR) for determining comonomer triad and tetrad sequences through chemical shift in spectra; 2) pyrolysis-gas chromatography-mass spectrometry (Py-GC/MS) enabling dimers and trimers fragments sequence confirmation via thermal degradation characteristics; and 3) Kerr effect-based techniques utilizing electric field-induced birefringence measurements to probe orientation-dependent macromolecular arrangements. The synergistic application of these complementary characterization methods provides a multi-dimensional analytical framework for decoding complex polymer microstructures. This work aims to offer methodological guidance for researchers engaged in monomer sequence analysis and microstructure characterization.</p>

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Monomer sequence analysis: unraveling the molecular fingerprint for synthetic copolymer structure

  • 期刊论文

  • 发表日期：

    2026年3月19日

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  • Shaohui Liu,
  • Chen Zhang,
  • Maolin Cheng,
  • Lindeng Ma,
  • Kun Yang,
  • Jingjing Wen,
  • Limin Gu,
  • Tong Wu,
  • Fengxia Sun

摘要

Synthetic copolymer, as high-molecular compounds, are constructed by the linkage of numerous monomer molecules via chemical bonds. The distribution of monomer sequences within polymers exerts a direct influence on their properties and applications. Thus, comprehensive analysis of monomer sequence distribution constitutes a critical research focus in polymer science, particularly for establishing structure-property correlations and guiding the rational design of advanced polymeric materials. This review mainly outlines three principal analytical approaches: 1) nuclear magnetic resonance spectroscopy (NMR) for determining comonomer triad and tetrad sequences through chemical shift in spectra; 2) pyrolysis-gas chromatography-mass spectrometry (Py-GC/MS) enabling dimers and trimers fragments sequence confirmation via thermal degradation characteristics; and 3) Kerr effect-based techniques utilizing electric field-induced birefringence measurements to probe orientation-dependent macromolecular arrangements. The synergistic application of these complementary characterization methods provides a multi-dimensional analytical framework for decoding complex polymer microstructures. This work aims to offer methodological guidance for researchers engaged in monomer sequence analysis and microstructure characterization.