Chem. J. Chinese Universities ›› 1989, Vol. 10 ›› Issue (5): 520.

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Self-Diffusion Coefficients of Polymer in Polymerization Measured with Pulsed Field-Gradient NMR Spin Echo Methods

Hu Jian, Xu Yushu, Xu Jing, Jiang Dianwu, Chui Haifeng   

  1. The Atomic and Molecular Physics Institute. Jilin University, Changchun
  • Received:1988-09-24 Online:1989-05-24 Published:1989-05-24

Abstract: Aexperiment set for measuring self-diffusion coefficients of polymer in polymerization with a pulsed Field-Gredient NMR Spin Echo method is described. The self-diffusio coefficients produced from little molecules in polymerization from MMAto PMMAinitiated by AIBNwere measured with this set. The lowest value of the coefficients is D= 9.04 × 10-9 cm2·s-1.

Key words: Self-diffusion coefficient, PMMA, Pulsed field-gradient NMR spin echo

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