Direct ink writing techniques for in situ gelation and solidification

Jackson K. Wilt; Dustin Gilmer; Sungjin Kim; Brett G. Compton; Tomonori Saito

doi:10.1557/s43579-020-00006-8

Direct ink writing techniques for in situ gelation and solidification

Jackson K. Wilt, Dustin Gilmer, Sungjin Kim, Brett G. Compton, Tomonori Saito

Soft Materials and Membranes

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

Direct ink writing (DIW) is an extrusion-based 3D printing method which prints near ambient temperatures and has one of the broadest printable material selections among additive manufacturing techniques. However, DIW uses viscoelastic materials susceptible to collapse during printing. One promising route to improve the structural integrity of viscoelastic inks is using in situ curing methods to increase the yield strength of the printed structures after deposition. This review summarizes progress in three representative methods of in situ curing for DIW, including ultra-violet-induced crosslinking, rapid cure of reactive ingredients, and flash vaporization of a solution’s solvent to coagulate dissolved polymers.

Original language	English
Pages (from-to)	106-121
Number of pages	16
Journal	MRS Communications
Volume	11
Issue number	2
DOIs	https://doi.org/10.1557/s43579-020-00006-8
State	Published - Apr 2021

Funding

This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ). This research was sponsored by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of Energy. JKW would like to acknowledge support from the U.S. Department of Energy, Office of Science, Office of Workforce Development for Teachers and Scientists (WDTS) under the Science Undergraduate Laboratory Internship program. BGC would like to acknowledge support from Honeywell Federal Manufacturing and Technologies through contract DE-NA0002839.

Funders	Funder number
Office of Workforce Development for Teachers
U.S. Department of Energy
Office of Science
Oak Ridge National Laboratory
Honeywell Federal Manufacturing and Technologies	DE-NA0002839

Keywords

3D printing
Direct ink writing
In situ
Photochemical
Solvent casting

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1557/s43579-020-00006-8

Cite this

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abstract = "Direct ink writing (DIW) is an extrusion-based 3D printing method which prints near ambient temperatures and has one of the broadest printable material selections among additive manufacturing techniques. However, DIW uses viscoelastic materials susceptible to collapse during printing. One promising route to improve the structural integrity of viscoelastic inks is using in situ curing methods to increase the yield strength of the printed structures after deposition. This review summarizes progress in three representative methods of in situ curing for DIW, including ultra-violet-induced crosslinking, rapid cure of reactive ingredients, and flash vaporization of a solution{\textquoteright}s solvent to coagulate dissolved polymers.",

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AU - Kim, Sungjin

AU - Compton, Brett G.

AU - Saito, Tomonori

PY - 2021/4

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AB - Direct ink writing (DIW) is an extrusion-based 3D printing method which prints near ambient temperatures and has one of the broadest printable material selections among additive manufacturing techniques. However, DIW uses viscoelastic materials susceptible to collapse during printing. One promising route to improve the structural integrity of viscoelastic inks is using in situ curing methods to increase the yield strength of the printed structures after deposition. This review summarizes progress in three representative methods of in situ curing for DIW, including ultra-violet-induced crosslinking, rapid cure of reactive ingredients, and flash vaporization of a solution’s solvent to coagulate dissolved polymers.

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ER -

Direct ink writing techniques for in situ gelation and solidification

Abstract

Funding

Keywords

UN SDGs

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