STUDY OF CELLULOSE FROM FLAX STRAW

Due to the need to expand the raw material base for the paper industry, this study examined the straw that remains as a secondary product after harvesting the seeds of oilseed flax, which is widely produced in Kazakhstan. As the results of scientific research by scientists in the literature show, flax stalks have established themselves as highquality raw materials for the production of cellulose. This article presents some research results on the production of high-alpha cellulosic products from flax straw. Today, all costeffective, energy-saving technologies using safe toxic chemicals and processes are relevant. It has been established that the strength of fibers from flax straw with 20% recycled cardboard grade T21, obtained by accelerated dissolution of moisture-resistant waste paper through the use of its reagent-alkaline treatment, is 6% higher than the corresponding strength of recycled fibers obtained by longer-term alkaline treatment. Analysis of micrographs shows evidence of higher fiber content, as well as longer fibers, which create a lattice for a stronger material. The particle size distribution of crushed cellulose particles from flax straw treated with a 30% NaOH solution showed the best result D10 = 31.781 nm, since the smaller the fiber diameter, the higher the strength and smooth structure of the paper