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首页> 外文会议>NMR spectroscopy of polymers: Innovative strategies for complex macromolecules >~1H MAS NMR Spectroscopy of Polyethylene Acrylic Acid Copolymers and Ionomers
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~1H MAS NMR Spectroscopy of Polyethylene Acrylic Acid Copolymers and Ionomers

机译：聚乙烯丙烯酸共聚物和离聚物的〜1H MAS NMR光谱

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摘要

High speed solid-state ~1H MAS NMR spectroscopy has been used to characterize a series of poly(ethylene-coacrylic acid) P(E-AA) materials where the distributions of the pendant carboxylic acid group along the polymer backbone are precisely controlled. Ionomers obtained from partial neutralization of the carboxylic acid within these P(E-AA) materials with Zn~(2+) or Li~+ were also investigated. Using a combination of ID ~1H MAS NMR and 2D ~1H MAS NMR double quantum (DQ) and NOESY correlation experiments, details about the local P(E-AA) structure were obtained. The influence of precise versus random spacing of the carboxylic acid and the impact of Li- and Zn-neutralization on the polymer structure is discussed.
机译：高速固态〜1H MAS NMR光谱已用于表征一系列聚（乙烯-共丙烯酸）P（E-AA）材料，其中羧酸侧基沿着聚合物主链的分布得到精确控制。还研究了在这些P（E-AA）材料中用Zn〜（2+）或Li〜+部分中和羧酸所得的离聚物。使用ID〜1H MAS NMR和2D〜1H MAS NMR双量子（DQ）和NOESY相关实验的组合，可以获得有关局部P（E-AA）结构的详细信息。讨论了羧酸精确间隔与无规间隔的影响以及Li和Zn中和对聚合物结构的影响。

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  • 来源
  • 会议地点 Honolulu HI(US);Honolulu HI(US)
  • 作者

    Todd M. Alam; Janelle E. Jenkins; Michelle E. Seitz; C. Francisco Buitrago; Karen I. Winey; Kathleen L. Opper; Travis W. Baughman; Kenneth B. Wagener;

  • 作者单位

    Electronic and Nanostructured Materials, Sandia National Laboratories,Albuquerque, NM 87185;

    Electronic and Nanostructured Materials, Sandia National Laboratories,Albuquerque, NM 87185;

    Department of Materials Science and Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104;

    Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104;

    Department of Materials Science and Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104;

    Department of Chemistry, University of Florida, Gainesville, FL 32611;

    Department of Chemistry, University of Florida, Gainesville, FL 32611;

    Department of Chemistry, University of Florida, Gainesville, FL 32611;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 聚合反应过程;
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