Interpretation of the physical structure of cellulose from the ESR spectrum of a gamma-irradiated preparation

摘要

A method is proposed for determining the crystallinity index of cellulose by an ESR method the principle of which is based on the identification in the recorded spectrum of a signal from radicals of the alkoxyl type stabilized in crystalline sections of the preparation. The radicals are generated by irradiating the cellulose with γ-radiation in vacuum with a dose of 10-100 kGr. The crystallinity index of the cellulose is calculated from the equation CI = I_1/I_2 - 1.