Seasonal birch: results of infrared spectroscopy

Abstract

The paper considers the application of a modern physical method for studying Fourier IR (infrared) spectroscopy in order to establish the dependence of parameters by deconvolution of the absorptive capacity of natural hardwood: hydrogen bond density, H-bond energy, hydrogen bond length for three types of H-bonds characteristic of cellulose-containing vegetable wood raw material. Features of intermolecular interaction in wood of various species and seasons of the year in comparison with technical cellulose have an additional characteristic of the Fourier IR spectroscopy method for an effective mechanism for predicting the physical and mechanical properties of wood pulp-containing materials, for assessing the nature of chemical bonds in the structure of wood materials, mechanical strength. The purpose of the pulp and paper mill is to produce high-quality industrial pulp. To achieve this goal, a comparison was made of the deconvolution performance of a modern method for studying FTIR-spectroscopy of hydrogen bonds of hydroxyl groups OH, including the influence of methyl-methylene CH stretching vibrations. One of the indicators used in comparing methods is the regression coefficient R^, which is a measure of the accuracy of the results obtained. In this study, the regression coefficient value for the samples is 0.999, which indicates a very high degree of reliability of the data obtained.