OBTAINING CELLULOSE WITH CRYSTALLOGRAPHIC ORIENTATION OF MACROMOLECULES FROM THE HUSK OF A HYBRID SUNFLOWER

Currently, the obtaining and implementation of self-degradable, harmless to the nature of composite materials based on cellulose, allows to solve a number of environmental problems. In this regard, the number of raw materials sources from which cellulose can be obtained increases, the economic and environmental efficiency of its usage and the properties of the obtained cellulose can be studied. In this study, from sunflower husk (SFH)P63LE10 «Pioneer» (USA) using glacial acetic acid and based on acetic acid with 42% concentration peroxyacetic acid, process of obtaining microcrystalline cellulose comparatively was studied. As a result of the study, based on acetic acid with 42% concentration in combination peroxyacetic acid was determined, that yield of obtained MCC (MCC2) was 3,7%, and also quantity of α-cellulose was higher to 3,6%. However, the quality of the residual lignin was 24.02%, and the trace quantity of amorphous structure was determined by IR spectroscopy and XRD diffractometry. On the contrary, the yield and quantity of α-cellulose obtained MMC1 using glacial acetic acid in combination peroxyacetic acid is lower than MMC2, obtained product was different by high degree of purity and content of the ordered part of cellulose with crystallographic orientation of macromolecules.