High-density polyethylene is one of the most commonly used polymers, without which we can hardly imagine our everyday lives. The reuse or recycling of polymer products is important for sustainable development. However, with recycling, some properties of polymeric materials change.
For the purpose of this thesis, the rotational rheometer was used to study the influence of multiple recycling on the flow properties of high-density polyethylene. Rotational tests were performed at 210 °C. Thirteen samples with different percentage of raw and extruded high-density polyethylene were tested.
It has been found that multiple recycling of high-density polyethylene affects its flow properties, which can be attributed to changes in material structure.