波谱学杂志 ›› 2011, Vol. 28 ›› Issue (2): 251-258.

• 研究论文 • 上一篇    下一篇

核磁共振快速分析聚酯的组成

吴爱芹*,于静,庄健, 张青岩   

  1. 青岛迪爱生精细化学有限公司,山东 青岛 266101
  • 收稿日期:2010-10-19 修回日期:2010-12-28 出版日期:2011-06-05 发布日期:2011-06-05
  • 基金资助:

    青岛市崂山区科技发展资金资助项目(LS-04-KJZX-14).

Rapidly Analyzing Composition of Polyesters by NMR

 WU Ai-Qin*, YU Jing, ZHUANG Jian, ZHANG Qing-Yan   

  1. QDIC Fine Chemicals Company Limited, Qingdao 266101, China
  • Received:2010-10-19 Revised:2010-12-28 Online:2011-06-05 Published:2011-06-05
  • Supported by:

    青岛市崂山区科技发展资金资助项目(LS-04-KJZX-14).

摘要:

该文合成19个聚酯标样,利用核磁共振的多种技术,归属各聚酯酸单元和醇单元的1H和13C的化学位移. 通过研究酸单元和醇单元 1H和13C化学位移的特点,得出同一种酸单元和不同的醇单元相连,其1H和13C的化学位移变化不大;同一种醇单元和不同的酸单元相连也有同样的规律. 据此建立较系统的分析聚酯组成的核磁共振数据信息,利用该信息可以快速定性、定量未知聚酯的组成. 该研究结果对于未知聚酯的剖析有较大应用价值.

关键词: 核磁共振(NMR), 聚酯, 化学位移, 分析

Abstract:

Nineteen polyester compounds were synthesized, and utilized to study the 1H  and 13C NMR chemical shift characteristics of polyacid units and polyol units in polyesters. We found that the type of polyol unit connecting to the polyacid unit does not have much influence on the 1H  and 13C NMR chemical shift of the polyacid unit, and vice versa. On the basis of the experimental results, we established a chemical shift database for polyester units. With the aid of this database, the composition of unknown polyester can be determined quickly.

Key words: NMR, polyester, chemical shift, analysis

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