AN NMR INVESTIGATION OF SOME AMORPHOUS POLYSACCHARIDES

被引：5

作者：

FRONEMAN, S

REYNHARDT, EC

机构：

[1] Dept of Phys, Univ of South Africa, Pretoria

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 1991年 / 24卷 / 03期

关键词：

D O I：

10.1088/0022-3727/24/3/023

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Proton spin-lattice relaxation times in the rotating and laboratory frames of five polysaccharides have been measured as a function of temperature and frequency. The proton second moment of glycogen has also been measured as a function of temperature. The results have been interpreted in terms of a model in which molecular motions are characterized by a log-normal distribution of correlation times. The T1-rho results reveal a reorientation of CH2OH groups. In the case of chitin, evidence of threefold reorientations of methyl groups has been found.

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页码：387 / 391

页数：5

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