Sequential Multimaterial Additive Manufacturing of Functionally Graded Biopolymer Composites
Publication: 3D Printing and Additive Manufacturing
Volume 7, Issue Number 5
Abstract
Cellulose, chitin, and pectin are three of the most abundant natural materials on Earth. Despite this, large-scale additive manufacturing with these biopolymers is used only in limited applications and frequently relies on extensive refinement processes or plastic additives. We present novel developments in a digital fabrication and design approach for multimaterial three-dimensional printing of biopolymers. Specifically, our computational and digital fabrication workflow—sequential multimaterial additive manufacturing—enables the construction of biopolymer composites with continuously graded transitional zones using only a single extruder. We apply this method to fabricate structures on length scales ranging from millimeters to meters. Transitional regions between materials created using these methods demonstrated comparable mechanical properties with homogenous mixtures of the same composition. We present a computational workflow and physical system support a novel and flexible form of multimaterial additive manufacturing with a diverse array of potential applications.
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Information & Authors
Information
Published In
3D Printing and Additive Manufacturing
Volume 7 • Issue Number 5 • October 2020
Pages: 205 - 215
Copyright
Copyright 2020, Mary Ann Liebert, Inc., publishers.
History
Published online: 15 October 2020
Published in print: October 2020
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Author Disclosure Statement
No competing financial interests exist.
Funding Information
This research was primarily sponsored by The Mediated Matter research group at the MIT Media Lab. Additional funding was provided by NOE. LLC, Stratasys Ltd., MIT Research Laboratory of Electronics, Wyss Institute at Harvard, Department of Systems Biology at Harvard, GETTYLAB, Robert Wood Johnson Foundation, TBA-21 Academy, Thyssen-Bornemisza Art Contemporary, Stratasys Direct Manufacturing, National Academy of Sciences, San Francisco Museum of Modern Art, and the Esquel Group.
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