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3D reactive inkjet printing of bisphenol A-polycarbonate

Qian, Qifeng; Kamps, Jan Henk; Price, Brian; Gu, Hao; Wildman, Ricky; Hague, Richard; Begines, Belen; Tuck, Chris

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Authors

Qifeng Qian

Jan Henk Kamps

Brian Price

Hao Gu

RICKY WILDMAN RICKY.WILDMAN@NOTTINGHAM.AC.UK
Professor of Multiphase Flow and Mechanics

RICHARD HAGUE RICHARD.HAGUE@NOTTINGHAM.AC.UK
Professor of Additive Manufacturing

Belen Begines

CHRISTOPHER TUCK CHRISTOPHER.TUCK@NOTTINGHAM.AC.UK
Professor of Materials Engineering



Abstract

Additive Manufacturing (AM) techniques have gained extensive attention recently as they are able to directly produce 3D parts utilising a layer-by-layer manner. Inkjet printing is one such technique which can produce micron-scale features but is generally constrained to liquid viscosities of less than 30 mPa·s, therefore available materials are limited. A 3D reactive inkjet printing (3DRIJP) approach to deposit low viscosity monomers and polymerise in-situ to form polymer parts is emerging. In this work, a 3DRIJP approach has been developed to fabricate bisphenol A-polycarbonate (BPA-PC) for the first time by using a low viscosity reactive ink containing monomers, catalyst and solvent. A set of processing parameters were explored and optimised including temperature of droplet formation, substrate temperature and droplet spacing to print films. With a thermal post-curing process, BPA-PC was formed successfully with a molecular weight comparable to those which were manufactured by the conventional melt transesterification process. The thermal properties were evaluated suggesting good thermal resistance characteristics. Finally, a 3D ziggurat structure was printed to demonstrate the capability to fabricate BPA-PC by an AM method, thus broadened the library of AM materials to include engineering grade polymers via 3DRJIP. This approach was innovative in both the BPA-PC material formulation and the 3DRIJP process development from traditional inkjet printing methods, where a single printable formulation of monomers for thermoplastic optical-clear BPA-PC was able to be printed using one printhead to form 3D structures.

Journal Article Type Article
Acceptance Date Mar 8, 2022
Online Publication Date Mar 17, 2022
Publication Date Jun 1, 2022
Deposit Date Mar 18, 2022
Publicly Available Date Mar 18, 2022
Journal Additive Manufacturing
Print ISSN 2214-8604
Electronic ISSN 2214-8604
Publisher Elsevier BV
Peer Reviewed Peer Reviewed
Volume 54
Article Number 102745
DOI https://doi.org/10.1016/j.addma.2022.102745
Keywords Industrial and Manufacturing Engineering; Engineering (miscellaneous); General Materials Science; Biomedical Engineering
Public URL https://nottingham-repository.worktribe.com/output/7610915
Publisher URL https://www.sciencedirect.com/science/article/pii/S221486042200149X

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