Исследование структурно-динамического состояния молекул воды в увлажненных нитратах целлюлозы различного происхождения методом ЯМР релаксометрии

Abstract

The fulfilled research has confirmed that the process of water sorption by cellulose nitrates of various nature (wood and cotton origin) changes at least the topological structure and the mobility of the fibers, which is also accompanied by the more complicated character of the molecular motion of the fluid. Some water molecules, preserving mobility even at low temperatures, can be attributed not only to the outer hygroscopic water, but also to a individually “fixed” molecules, chemically “neutralized” and (or) sterically isolated from the other water molecules, which can appear in the polysaccharide structure, for example, as the result of interaction of hydroxyl groups of different nature in a polymer chain during its nitration.