Orientation stretching as a factor effecting the degradation of biodegradable composite polymer films

The biodegradable polymeric materials (PM) are of interest because of their complete reproducibility and practical unlimitedness of raw materials. It is becoming more promising due to heavy worldwide use of raw materials (oil and gas) for the production of traditional synthetic polymers. The main task of the researchers of biodegradable polymeric materials is to provide the required level of cost and technological and operational properties at a level close, or corresponding to synthetic polymers. Currently, there is a growing demand for biodegradable polymeric materials, as evidenced by the fact that in economically developed countries, a large share of disposable packaging are manufactured from similar materials. There are new directions and research on the development of a wide range of materials on the basis of different types of starches, lignins, proteins, cellulose, polyoxyethylenes and polylactide. With the growth of world production of polymeric materials (PM) we can observe growth of the problem of environmental protection from the polymeric wastes. The paper analyzes the well-known approaches to solving these problems in terms of efficiency. In the article the influence of orientation stretching of biodegradable polymer composite films based on polyolefins and biopolymers obtained by the method of extrusion of the melt with parison swell, on the processes of oxidation, photo-oxidation and biodegradation. It is shown that the orientation stretching leads to the reduction of kinetics of biodeterioration of self-degradable films based on synthetic and biological polymers. The growth of stretching multiplicity is accompanied by a linear increase in the degree of orientation of the composite extrusion of polyethylene films. The strength and modulus of elasticity of polymer composite films increase with the increase in the multiplicity of stretching.