波谱学杂志

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HR/MAS高分辨魔角微量探头用于天然橡胶固体1H、13C NMR测试及其与液体BBO探头、固体CP/MAS探头测试的比较

王晓钧,袁智,朱承飞   

  1. 南京工业大学材料科学与工程学院,江苏南京 210009
  • 收稿日期:2002-06-17 修回日期:2002-09-06 出版日期:2003-03-05 发布日期:2003-03-05
  • 作者简介:王晓钧(1963-),男,江苏人,副教授. 从事材料化学和测试技术专业

1H AND 13C NMR STUDY OF NATURAL RUBBER USING A HIGH RESOLUTION MAGIC ANGLE SPINNING PROBE: A COMPARISON STUDY

WANG Xiao-jun, YUAN Zhi, ZHU Cheng-fei   

  1. College of Material Science and Engineering, Nanjing University of Technology, Nanjing 210009,China
  • Received:2002-06-17 Revised:2002-09-06 Online:2003-03-05 Published:2003-03-05

摘要:

采用BRUKER高分辨魔角微量探头(HR/MAS),液相宽带BBO探头和固体CP/MAS探头,对天然橡胶固体、乳液以及天然橡胶溶于氘代苯的溶液进行了1H、13C 1D和2D NMR谱的测试和比较. 发现HR/MAS探头用于天然橡胶固体和乳液时可以得到高分辨的1H、13C谱,克服了CP/MAS探头测试固体13C NMR谱或者是固体1H NMR谱时,谱图存在S/N值可能较小、谱峰可能宽化的弱点.

关键词: 核磁共振, 高分辨魔角微量探头, 固体CP/MAS探头, 液体BBO探头, 天然橡胶

Abstract:

1D/2D 1H and 13C NMR spectra of solid natural rubber, natural rubber latex and dissolved natural rubber in liquid phase were acquired using a BRUKER high-resolution magic angle spinning (HR/MAS) probe, a BRUKER solution broad bore (BBO) probe and a BRUKER solid CP/MAS probe. The results obtained from the three probes were compared. The results showed that high resolution 1H and 13C spectra could be obtained for solid nature rubber and rubber latex by using the HR/MAS probe, suggesting that the HR/MAS probe, in terms of signal-to-noise ratio and signal line width, is more advantageous than the CP/MAS probe for NMR studies on solid natural rubber.

Key words: NMR, high resolution magic angle spinning (HR/MAS) probe, solid CP/MAS probe, solution BBO probe, natural rubber

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