Development of technology for producing biodegradable hybrid composites based on polyethylene, starch, and monoglycerides

Objectives . This work aimed to develop technology produce biodegradable hybrid composite (BHC) films based on low-density polyethylene (LDPE) 115030-070 and thermoplastic starches (TPS) of various origins (corn, pea, rice), with distilled monoglycerides as the plasticizer. The properties produced BHC were studied optimal native starch : glycerol ratio is proposed. Methods TPS this material from different types in laboratory extruders (Brabender MashPlast, Russia), extruded melts subjected ultrasonic vibrations. structure appearance using scanning electron microscopy rheology. Their biodegradability was assessed by immersing them biocompost for three months. To evaluate mechanical performance without ultrasound, changes tensile stress elongation at break determined during biodegradation process. Results had a homogeneous structure, except small agglomerates (non-melted grains), which did not reduce their quality. high strength, comparable polyethylene. After removing samples biocompost, strength decreased 20%, shows biodegradability. Conclusions used will be applicable packaging industry environmental impact.