Towards the prediction of barrel fill level in twin-screw wet granulation.

Autor: Pohl S; Institute of Pharmaceutics and Biopharmaceutics, Heinrich Heine University, Universitätsstrasse 1, Building 26.22, 40225 Düsseldorf, Germany; INVITE GmbH, Drug Delivery Innovation Center, Chempark, Buildung, W32, 51368 Leverkusen, Germany. Electronic address: sebastian.pohl@hhu.de., Frey K; Institute of Pharmaceutics and Biopharmaceutics, Heinrich Heine University, Universitätsstrasse 1, Building 26.22, 40225 Düsseldorf, Germany. Electronic address: katrina.frey@hhu.de., Kleinebudde P; Institute of Pharmaceutics and Biopharmaceutics, Heinrich Heine University, Universitätsstrasse 1, Building 26.22, 40225 Düsseldorf, Germany. Electronic address: kleinebudde@hhu.de.
Jazyk: angličtina
Zdroj: European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V [Eur J Pharm Biopharm] 2024 Oct; Vol. 203, pp. 114428. Date of Electronic Publication: 2024 Jul 27.
DOI: 10.1016/j.ejpb.2024.114428
Abstrakt: The barrel fill level is defined as the fraction of the free available volume for a given screw configuration that is occupied by the wet material and is an interplay of the material throughput, screw speed, screw setup, barrel length of the twin-screw granulator used and the properties of the starting material. The fill level has a major impact on mixing and densification of the wetted mass and thus on the granules produced. It influences the twin-screw granulation process accordingly. In the current study, a model has been developed which is predictive in terms of material hold-ups in the barrel at various process settings by considering the geometries of the different screw elements in a configuration and the conveying velocity of the wet mass through the barrel. The model was checked on two granulators of different dimensions with various screw configurations, different materials and at different process settings. The model represents a step forward in predicting the barrel fill level but further research with a broader spectrum of materials, screw configurations and process settings is still needed and additional twin-screw granulators of other dimensions must be investigated.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Author(s). Published by Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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