STUDY OF THE MOLECULAR MOTION IN POLYEPICHLOROHYDRIN BY HIGH RESOLUTION NMR

JIA Mingchun; SHEN Lianfang; QIAN Baogong

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STUDY OF THE MOLECULAR MOTION IN POLYEPICHLOROHYDRIN BY HIGH RESOLUTION NMR

Papers | Updated：2021-06-21

- STUDY OF THE MOLECULAR MOTION IN POLYEPICHLOROHYDRIN BY HIGH RESOLUTION NMR
- Vol. 11, Issue 3, Pages: 220-229(1993)
- Affiliations：
  
  1. Wuhan Institute of Physics, The Chinese Academy of Sciences,Wuhan,430071
  2. The Chinese Academy of Sciences
  3. Wuhan 430071
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：20 September 1993
- Accepted：
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[1]贾铭椿,沈联芳,钱保功.STUDY OF THE MOLECULAR MOTION IN POLYEPICHLOROHYDRIN BY HIGH RESOLUTION NMR[J].Chinese Journal of Polymer Science,1993,{4}(03):220-229.

JIA Mingchun, SHEN Lianfang, QIAN Baogong. STUDY OF THE MOLECULAR MOTION IN POLYEPICHLOROHYDRIN BY HIGH RESOLUTION NMR[J]. 1993, 11(3): 220-229.
[1]贾铭椿,沈联芳,钱保功.STUDY OF THE MOLECULAR MOTION IN POLYEPICHLOROHYDRIN BY HIGH RESOLUTION NMR[J].Chinese Journal of Polymer Science,1993,{4}(03):220-229. DOI：

JIA Mingchun, SHEN Lianfang, QIAN Baogong. STUDY OF THE MOLECULAR MOTION IN POLYEPICHLOROHYDRIN BY HIGH RESOLUTION NMR[J]. 1993, 11(3): 220-229. DOI：

摘要

正

The molecular motion in polyepichlorohydrin （PEPCH）

in solution and bulk

was studied by high resolution NMR by means of line width

spin-lattice relaxation time T

and nuclear Overhauser effect NOE. The results show that the VJGM model can describe the main chain motion of PEPCH in solution perfectly. In bulk state

the relationship between the line width and the temperature is consistent with WLF equation

but that between the high frequency molecular motion correlation time （in T

scale ） and temperature is consistent with Arrhenius equation. The motion parameters of PEPCH in both states were calculated. The internal rotation motion of side—CH

Cl group was analyzed by using equal three-site jump and diffusion internal rotation model in both states.

Abstract

The molecular motion in polyepichlorohydrin （PEPCH）

in solution and bulk

was studied by high resolution NMR by means of line width

spin-lattice relaxation time T

and nuclear Overhauser effect NOE. The results show that the VJGM model can describe the main chain motion of PEPCH in solution perfectly. In bulk state

the relationship between the line width and the temperature is consistent with WLF equation

but that between the high frequency molecular motion correlation time （in T

scale ） and temperature is consistent with Arrhenius equation. The motion parameters of PEPCH in both states were calculated. The internal rotation motion of side—CH

Cl group was analyzed by using equal three-site jump and diffusion internal rotation model in both states.

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