Machine learning investigation of polylactic acid bead foam extrusion

Title data

Shah, Karim Ali ; Brütting, Christian ; Albuquerque, Rodrigo Q. ; Ruckdäschel, Holger:
Machine learning investigation of polylactic acid bead foam extrusion.
In: Journal of Applied Polymer Science. Vol. 141 (2024) Issue 30 . - e55693.
ISSN 1097-4628
DOI: https://doi.org/10.1002/app.55693

Official URL:

Abstract in another language

Abstract This study employs machine learning algorithms to analyze the bead foam extrusion process and to assess the impact of processing parameters, specifically focusing on their effects on bead foam density and melt pressure in under water granulation (UWG) for polylactic acid (PLA). These interrelated parameters, influenced by processing parameters such as temperature, screw speed, and blowing agent, possess challenges for traditional empirical methods to capture. The key factors that significantly impact the prediction of melt pressure in UWG are blowing agent, injector pressure, temperature in B-extruder and die size. Likewise, essential parameters for predicting bead foam density comprise blowing agent, injector pressure, temperature in B-extruder, die plate temperature, melt temperature in B-extruder, and melt pressure in B-extruder. Machine learning (ML) models were employed to forecast bead foam density and melt pressure in UWG using various processing parameters in PLA bead foam extrusion. The random forest model achieved a high coefficient of determination R2 score of 0.96 for predicting melt pressure in UWG. Additionally, the decision tree model demonstrated effective predictions for bead density, with the R2 score: 0.81. These ML models can be applied to diverse materials, leading to more sustainable, efficient processes for bead foam extrusion.

Further data

Item Type:	Article in a journal
Refereed:	Yes
Keywords:	bead foams; foam extrusion; machine learning; PLA; twin-screw extruder
Institutions of the University:	Faculties > Faculty of Engineering Science > Chair Polymer Materials > Chair Polymer Materials - Univ.-Prof. Dr.-Ing. Holger Ruckdäschel Faculties Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Chair Polymer Materials
Result of work at the UBT:	Yes
DDC Subjects:	600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited:	12 Oct 2024 21:00
Last Modified:	14 Oct 2024 13:52
URI:	https://eref.uni-bayreuth.de/id/eprint/90673