高碘酸盐
化学
羧甲基纤维素
凝胶渗透色谱法
纤维素
高碘酸钠
化学结构
高分子化学
半缩醛
水解
周期酸
有机化学
钠
聚合物
作者
V. A. Dyatlov,V. I. Gumnikova,Т. А. Гребенева,I. S. Kruppa,I. R. Rustamov,В. В. Киреев,Victor I. Maleev
出处
期刊:International polymer science and technology
[SAGE]
日期:2015-04-01
卷期号:42 (4): 19-26
被引量:5
标识
DOI:10.1177/0307174x1504200404
摘要
13 C nuclear magnetic resonance, paramagnetic resonance, and ultraviolet spectroscopy and high-resolution gel permeation chromatography were used to investigate the process of periodate oxidation of carboxymethyl cellulose and the structure and molecular weight characteristics of its oxidised forms produced under different conditions. It was shown that, in solution and in the solid state, aldehyde groups in the oxidised units exist in the form of cyclic hemiacetals. An examination was made of the existence of all the main cyclic intramolecular hemiacetal structures, and the most probable were proposed. The influence of the degree of periodate oxidation on the molecular weight characteristics and hydrolytic stability of dialdehyde carboxymethyl cellulose was studied.
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