Study of Structure of Product's Obtained by Sulfation of Arabinogalactan from Larch Wood with Chlorosulfonic Acid in Pyridine

Abstract

The structure of the arabinogalactan (AG) and its sulfates was characterized by method of FT Raman spectroscopy. It was established, that after sulfation of AG with a chlorosulfonic acid in pyridine, there was an introduction of sulfate groups in arabinogalactan chain. As shown by an X-ray diffraction (XRD), initial samples of MCC had amorphous structure, and in the course of sulfation there was a further amorphization of the structure of a material. By use of scanning electron microscopy (SEM) and atomic-force microscopy (AFM) was shown, that sulfated arabinogalactan synthesized in pyridine, have different morphologies from starting arabinogalactan.

Headnote

The structure of the arabinogalactan (AG) and its sulfates was characterized by method of FT Raman spectroscopy. It was established, that after sulfation of AG with a chlorosulfonic acid in pyridine, there was an introduction of sulfate groups in arabinogalactan chain. As shown by X-ray diffraction (XRD), initial samples of MCC had amorphous structure, and in the course of sulfation there was a further amorphization of the structure of a material. By use of scanning electron microscopy (SEM) and atomic-force microscopy (AFM) was shown, that sulfated arabinogalactan synthesized in pyridine, have different morphologies from starting arabinogalactan.

Keywords: arabinogalactan, sulfation, sulfated arabinogalactan, chlorosulfonic acid, pyridine, FT Raman spectroscopy, X-ray diffraction, scanning electron microscopy, atomic-force microscopy.

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