It was found that PP filled with chemically modified starch is suitable for spinning biodegradable, oriented, high-strength flat fibres with elevated performance properties (tensile strength, water absorption, biodegradability) and woven packaging containers made from them. The structure of the composite fibres is perfected by improving the process compatibility of the binder and starch particles due to intensification of the physicochemical and the occurrence of chemical reactions on the phase boundaries. The use of such polymeric materials and fibres in the packaging industry will facilitate solving a pressing environmental problem in textile materials science utilization of wastes from fibres made of synthetic polymers.The scientific and technical progress in polymeric materials and polymer processing technologies has caused a qualitative and quantitative jump in the development of packaging. Over 30% of the synthetic polymers manufactured in the world and 40% in the European Union are used in the packaging sector [1-3]. More than half involves thermoplasts high-and lowpressure polyethylene (PE), polypropylene (PP), etc. This is the cheapest and most technologically effective raw material for fabrication of fibre and film materials used for packaging of food products, and articles in the light, chemical, and electronics industry. However, after fulfilling its functions, solid polymer packaging is discarded, creating inconveniences in everyday life and harming nature. It litters the upper fertile layer of the soil, perturbing air and moisture exchange and preventing plant growth. The problem is exacerbated by the fact that synthetic polymers are very stable chemical compounds. In natural conditions, PE can withstand solar radiation, oxygen, heat, and moisture for decades without marked chemical degradation. PP fibres and films undergo partial decomposition with loss of mechanical strength only after remaining in air for a year and more. The wide proliferation of packaging containers spliced together from oriented PP fibres has exacerbated the problem of disposing of used packaging due to its high strength and biostability.Exacerbation of the environmental problem related to environmental pollution by solid polymer wastes led to the appearance of a new scientific direction at the junction of physical chemistry, microbiology, materials science, and polymer technology aimed at creating biodegradable polymeric materials (BPM). These materials retain their service properties for a given time of use and during use, for example, by burial in soil or composting, degrade, and undergo accelerated physicochemical and biological transformations, including in the metabolism of natural systems [4][5][6].Plastics can be made biodegradable by incorporating biodegradable fillers isolated from renewable plant (corn, potato, or rice starch, cellulose, etc.) and animal (chitin, chitosan, etc.) raw material in thermoplastic synthetic binders [7,8]. The creation of BPM combining high biodegradability indexes and deformation-strength...
