Direct granule feeding of thermal droplet deposition 3D printing of porous pharmaceutical solid dosage forms free of plasticisers

McDonagh, Thomas ORCID:, Belton, Peter and Qi, Sheng ORCID: (2022) Direct granule feeding of thermal droplet deposition 3D printing of porous pharmaceutical solid dosage forms free of plasticisers. Pharmaceutical Research, 39 (3). 599–610. ISSN 0724-8741

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Purpose: To develop a new direct granule fed 3D printing method for manufacturing pharmaceutical solid dosage forms with porous structures using a thermal droplet deposition technology. Methods: Eudragit® E PO was used as the model polymer, which is well-known to be not FDM printable without additives. Wet granulation was used to produce drug loaded granules as the feedstock. The flow and feedability of the granules were evaluated. The physicochemical properties and in vitro drug release performance of the granules and the printed tablets were fully characterised. Results: Using the method developed by this study, Eudragit E PO was printed with a model drug into tablets with infills ranging from 30–100%, without additives. The drug was confirmed to be molecularly dispersed in the printed tablets. The printing quality and performances of the porous tablets were confirmed to be highly compliant with the pharmacopeia requirement. The level of infill density of the porous tablets had a significant effect on their in vitro drug release performance. Conclusion: This is the first report of thermal droplet deposition printing via direct granule feeding. The results of this study demonstrated that this new printing method can be used as a potentially valuable alternative for decentralised pharmaceutical solid dosage form manufacturing.

Item Type: Article
Additional Information: Funding Information: We would like to thank the Enabling Innovation: Research to Application (EIRA), a Research England Connecting Capability Fund (CCF) project for providing the funding for the study.
Uncontrolled Keywords: arburg plastic freeforming (apf),fused deposition modelling (fdm),porous solids,solid dosage forms,thermal droplet deposition 3d printing,biotechnology,molecular medicine,pharmacology,pharmaceutical science,organic chemistry,pharmacology (medical) ,/dk/atira/pure/subjectarea/asjc/1300/1305
Faculty \ School: Faculty of Science > School of Pharmacy
Faculty of Science > School of Chemistry
UEA Research Groups: Faculty of Science > Research Groups > Pharmaceutical Materials and Soft Matter
Related URLs:
Depositing User: LivePure Connector
Date Deposited: 15 Feb 2022 11:30
Last Modified: 19 Aug 2023 00:44
DOI: 10.1007/s11095-022-03198-x


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