MATERIALS | BIOPLASTICS
load, feed rate, and screw RPM. Devolatilisation is key; multiple vents can be used in a TSE to reduce hydrolysis risk when compounding bioplastics. Bioplastic compounds can exhibit variation and a narrower processing window, but tools are avail- able to help with this challenge, Martin noted. For example, on-line measurement of variables such as viscosity can be helpful for addressing variation. For successful compounding, the whole process, from upstream feeder design to downstream pelletising, should be taken into consideration, he said at the conference.
End-of-life There are many issues around the end-of-life for biodegradable bioplastics, whether composting or recycling. Challenges can vary by region, as the infrastructures and systems as well as regulations and incentives differ. In the EU, a new project called ReBioCycle started in October to demonstrate recycling technologies for bio-based biodegrad- able plastics, such as PLA, PHA and composites that are used in durable goods and multi-use packaging.
“Bio-based biodegradable plastics can be kept
in the material cycle for as long as possible through innovative recycling technologies, thus demonstrat- ing that end-of-life bio-based biodegradable plastics can be used in the circular bioeconomy,” said Kevin O’Connor, Professor at University College Dublin in Ireland, coordinator of the project and Director of Ireland’s BiOrbic Bioeconomy SFI Research Centre.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.biopreferred.gov �
https://en.tuv.at/ok-biobased-en �
www.natureworksllc.com �
https://en.cj.net �
www.mangomaterials.com �
www.arkema.com �
www.eurotec-ep.com �
www.braskem.com �
https://colortech.com �
https://addisperse.us �
www.ingeniapolymers.com �
www.tpei.com �
www.farrel-pomini.com �
https://extruders.leistritz.com �
https://biorbic.com
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