SPE Thermoforming Quarterly®
Fourth Quarter 2023
Impact Modification of PLA By Blending Small Amounts Of Amorphous PHA Copolymers
The continuous mixer of choice for bioplastics is the co-rotating, intermeshing twin screw extruder. (TSE) Bioplastic materials tend to be heat and shear sensitive as compared to traditional plastics, and generally need to be compounded with modifiers, fillers, additives and other polymers based upon the required functionality of the final product. Elevated melt temperatures and high shear stresses must be managed in the TSE process section to minimize molecular weight loss and maintain mechanical properties…
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Process Studies and Test Results for PLA and PHA Grade Bioplastics
The continuous mixer of choice for bioplastics is the co-rotating, intermeshing twin screw extruder. (TSE) Bioplastic materials tend to be heat and shear sensitive as compared to traditional plastics, and generally need to be compounded with modifiers, fillers, additives and other polymers based upon the required functionality of the final product. Elevated melt temperatures and high shear stresses must be managed in the TSE process section to minimize molecular weight loss and maintain mechanical properties…
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