TAGS: Green and Bioplastics Thermoplastic Composites
FARREL POMINI and NatureWorks have conducted joint research to compare the processing of Ingeo™ polylactide (PLA) compounds on the Twin Screw Extruder and the Farrel Continuous Mixer (FCM™). The objective of the study was to evaluate the effects on molecular weight loss in PLA while adding a talc mineral filler.
Ingeo polylactide (PLA) or polylactic acid is a biodegradable and bioactive polyester derived from sustainable, renewable resources, such as corn starch, cassava, or sugarcane. It is often used in food packaging and fiber/nonwovens industries and is one of the most highly utilized bioplastics in the world.
Farrel Continuous Mixer Technology for Better MW Retention
The study found that the FCM™ resulted in significantly better molecular weight retention. Trials showed a 95% molecular weight retention when using 50% filler and 88% retention when using 60% filler.
In addition, the trials demonstrated that FCM™ technology provides other distinct advantages over
Twin Screw Extruders regarding:
- Lower melt temperature
- Lower specific energy
The minimal residence time and efficient mechanical shear respectively, that are the cornerstones of the FCM™ operating principles, are responsible for these outcomes.
Improved Physical Properties
PLA is often compounded with mineral fillers and/or additives to improve physical properties. As compared to Twin Screw Extruders, the benefits of the FCM™ would allow for:
- Lower processing costs
- Higher mineral fill levels
- Improved physical properties
The results are being presented at various conferences worldwide beginning with ANTEC® 2019, March 18 – 21 in Detroit, Michigan USA.
Source: FARREL POMINI