CARBON-13 NMR STUDY ON MOLECULAR MOTION OF 1, 2-POLYBUTADIENE——TEMPERATURE DEPENDENCE OF MOLECULAR MOTION

NI Shaoru; SHEN Lianfang; YU Fusheng; QIAN Baogong

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CARBON-13 NMR STUDY ON MOLECULAR MOTION OF 1, 2-POLYBUTADIENE——TEMPERATURE DEPENDENCE OF MOLECULAR MOTION

Papers | Updated：2021-06-21

- CARBON-13 NMR STUDY ON MOLECULAR MOTION OF 1, 2-POLYBUTADIENE——TEMPERATURE DEPENDENCE OF MOLECULAR MOTION
- Vol. 4, Issue 3, Pages: 235-240(1986)
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- Published：20 September 1986
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NI Shaoru, SHEN Lianfang, YU Fusheng, et al. CARBON-13 NMR STUDY ON MOLECULAR MOTION OF 1, 2-POLYBUTADIENE——TEMPERATURE DEPENDENCE OF MOLECULAR MOTION[J]. 1986, 4(3): 235-240.
DOI：

NI Shaoru, SHEN Lianfang, YU Fusheng, et al. CARBON-13 NMR STUDY ON MOLECULAR MOTION OF 1, 2-POLYBUTADIENE——TEMPERATURE DEPENDENCE OF MOLECULAR MOTION[J]. 1986, 4(3): 235-240. DOI：

摘要

Proton-decoupled

13C FT-NMR (operating at 50.3 MHz) is used to determine spin-latticerelaxation time (T1)

nuclear Overhauser enhancement (NOE)

linewidth and chemical shift of 1

2-polybutadiene as a function of temperature in CDCl3 solution and the temperature dependence ofmolecular motion of 1

2-polybutadiene has been investigated with these NMR relaxation parameters.It is found that jumps of NOE and linewidth vs. temperature appear between-1℃ and -30℃. Theminimum of nT1 vs. temperature for all carbons occur at about -45℃.

Abstract

Proton-decoupled

13C FT-NMR (operating at 50.3 MHz) is used to determine spin-latticerelaxation time (T1)

nuclear Overhauser enhancement (NOE)

linewidth and chemical shift of 1

2-polybutadiene as a function of temperature in CDCl3 solution and the temperature dependence ofmolecular motion of 1

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