Conformation Isomerism In Poly(n-alkyl Laurolactams) By Proton And Carbon-13 NMR
作者:
S.W. Shalaby,
G.E. Babbitt,
R.L. Lapinski,
期刊:
Spectroscopy Letters
(Taylor Available online 1974)
卷期:
Volume 7,
issue 4-5
页码: 203-210
ISSN:0038-7010
年代: 1974
DOI:10.1080/00387017408067237
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The amide groups of poly(N-methyl laurolactam), poly(N-ethyl laurolactam) and poly(N-benzyl laurolactam) were shown by PMR and CMR to acquire both theantiandsynconformations in CDCl3at 30°C. At 80°C, the PMR signals of the two conformations collapsed to one signal, at an intermediate chemical shift. Theanti - synPMR and/or CMR signals were displayed by carbon nuclei and protons of all the groups which are directly bonded to the amide moieties in the three polymers. The magnetic non-equivalence of the carbon nuclei and protons of a number of other groups which are not directly linked to the amide functions was also demonstrated.
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