| Popis: |
Currently, there is a big issue with waste, its processing and subsequent use. On the one hand, there are many initiatives to replace materials that are poorly biodegradable, but on the other, it is necessary to process and ideally use the waste that we have already produced. In this study, the properties of composite boards made of waste materials and biodegradable polymer were investigated. The composite boards were made from wood and plastic waste using high-energy milling technology. This technology for material preparation is promising as it includes controlling the morphology of particles, homogenising the mixture and drying the material during the milling process. Results show higher flexural strength of HDF boards compared to tested composites with one exception. Wood/PHBV composite exhibits 30% higher MOE than HDF due to its higher modulus of PHBV. The lowest thickness swelling (3%) and water absorption (12%) were measured for wood/HDPE composite. HDF boards recorded the lowest dimensional stability. The highest water absorption of tested composites was measured for wood/PHBV composite. Resistance to wood-rotting fungi was greatest for wood/PHBV composite containing marble powder, which corresponds to the results of scanning electron microscopy. The effects of both fungi (Coniophora puteana and Pleurotus ostreatus) in the decay test were similar. |
