Chinese Journal of Magnetic Resonance

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A STUDY OF THE CHAIN MOTION IN PEG/PVP SYSTEM BY SPIN LABEL ESR

JIN Gui-dong1, TAN Li1, CHEN Shi-ming1*,  YAN Xiao-min1, SHEN Yi-min1, PING Zheng-hua2, HUA Feng-jun2
  

  1. 1.Center of Analysis and Measurment, Fudan University, Shanghai 200433; 2.Macromolecular Science Department, Fudan University, Shanghai 200433
  • Received:2001-01-06 Published:2001-03-05 Online:2001-03-05
  • About author:*Correspondence author
  • Supported by:

    国家自然科学基金资助项目.

Abstract:

The spin label ESR was used to study the chain motion in the PEG/PVP blends under different temperatures. In the ESR spectrum, there were two components in the PEG/PVP blends, indicating the different environments in the blends, while there was only slow component in the low temperature and only fast component in high temperature in SLPEG. With the ESR spectrum parameter, the calculated correlation time of the fast component of the samples was between 10-9~10-11s and T5mT of all samples was obtained from the out splitting width. The results for the T5mT and the correlation time showed that there was interaction between different polymer chains in the blends.

Key words: ESR, Spin label, PEG, PVP, Polymer blend

CLC Number: