Determination of the conformity of proprties of modofied flax fiber for the goods of medical and hygienic purpose

Purpose. Investigation of the hygroscopic properties of modified flax fibers and the possibility of obtaining hygienic wadding from it. Methodology. During the researches we used required by national standards applicable methods for determining the physical, mechanical and hygroscopic properties of the fibrous material, to process the research results were used methods of mathematical statistics. Findings. The modification of short flax fiber can reduce the cost of medical clothing and materials. Therefore, it is necessary to investigate the impact of processing technology on short flax fiber sanitary and hygienic properties. Modified flax fiber obtained during this work with the use of emulsification of composite chemical agent (ССА) on the basis of urea phosphate surface-active substances before mechanical treatment, can be used to obtain medical wadding because it has such qualitative indicators: the average mass length 29,8 mm (at requirements 18,5-30 mm); linear density 0,85 tex (at the requirements of 0,20-0,90 tex); the content of shives and impurities 1,25 % (at the requirements of 1,25-2,0%). The indicators of sanitary and hygienic properties of modified linen fibers, obtained in different ways, were determined. It has been established that none of the modification stages does not affect the absorption capacity and capillary fiber as boiling. Significant increase of the fiber capillarity (up to 67,5 – 75,0 mm) in the process of alkaline boiling under optimal conditions due to depectinization, delignification and splitting of complex fibers into more subtle complexes. Modification of cellulose, which occurs at high-temperature alkaline boiling, improves the absorption capacity of the fiber. Thus, the absorption capacity of short modified flax fiber №2 after alkaline boiling is 20,0 g / g, and for short modified flax fiber №3 – 21,0 g / g. Boiling of flax fibers was carried out by a single-phase alkali-peroxide method. With this method, you can get high-quality modified flax fiber and reduce the cost of production of medical hygroscopic flax wadding. As a result of the research, a scientifically based technology for the production of modified flax fibers, which can be used for the production of medical hygiene wadding and other medicalу hygienic goods, has been developed. Originality. The possibility of using modified flax fibers for manufacturing hygienic wadding is substantiated. The practical value. The technological mode of obtaining medical hygienic wadding with the use of alkali-peroxide boiling of modified flax fibers has been developed

modified flax fiber; capillarity; absorbency; medical hygienic wadding