Biopolymer Compounding Done Right

June 02, 2021 |

There is a huge push from governments and consumers to use biodegradable polymers; most of their attention is focused on eliminating single-use, petroleum-based polymers.

Biopolymers often do not meet required product property requirements in their pure form. Additives, fillers, and sometimes a portion of petroleum-based polymers are compounded into a biopolymer matrix to enhance product properties in order to meet product property requirements and/or reduce cost. Biopolymer compounds typically include a compounding step more than likely performed on a co-rotating twin-screw extruder (TSE). This presentation discusses preferential configurations of a co-rotating TSE and provides operator processing tips to achieve the highest possible output rates while achieving mix quality without over-shearing the materials.


  • Introduction to biopolymer compounding
  • Biopolymer compounding challenges and solutions
  • Biopolymers and specific mechanical energy
  • Extruder metallurgy for biopolymers

Presenter 1:

Dean Elliot

Technical Processing Manager

Mr. Dean Elliott has over twenty years of plastics extrusion experience. Dean earned a B.S. in mechanical engineering from the University of Durban-Natal in his native South Africa. As Technical Processing Manager, he leads R&D projects, provides extrusion training and support for customers, and oversees pilot plant trials. To date, Dean has his name on three patents.