| Abstract [eng] |
The need for plastic products has been constantly increasing and in the recent years there has been an increasing focus on the development of eco-friendly products including biocomposites, which are less harmful to the environment. These substances are biodegradable, reduce dependence on non-renewable sources, greenhouse effect. The aim of this work is to explore the possibilities of improving the properties of polypropylene with wheat waste fillers. Wheat waste was selected with polypropylene filler. Analyzing the structure of the composite, it was found that the particles of this filler are not completely wetted with polypropylene, which leads to defects at the polymer-particle contact points. Tests have shown that small quantities of wheat waste 5% increase the deformation properties of polypropylene, but almost no change in strength. Larger quantities of these fillers impair the mechanical properties of polypropylene. This was influenced by pairs of specimens due to improper technological parameters, which increase in size and volume with increasing filler content up to 20%. Economic calculations have shown that the composite of polypropylene and wheat waste is lighter and cheaper than unmodified polypropylene, but absorbs significantly more water. |
