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Updated: Jun 29, 2025

Author Spotlight: Quantitative Characterization of Liquid Photosensitive Bioink Properties for Continuous Digital Light Processing Based Printing
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Lignin: A multi-faceted role/function in 3D printing inks.

Jian Yang1, Xingye An1, Bin Lu2

  • 1Tianjin Key Laboratory of Pulp and Paper, State Key Laboratory of Food Nutrition and Safety, State Key Laboratory of Biobased Fiber Manufacturing Technology, Tianjin University of Science and Technology, No. 29, 13th Street, TEDA, Tianjin 300457, PR China; Limerick Pulp and Paper Centre, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada.

International Journal of Biological Macromolecules
|April 7, 2024
PubMed
Summary
This summary is machine-generated.

Lignin, a renewable biomass, can replace fossil fuels in 3D printing inks. This review explores lignin

Keywords:
3D printingFuture perspectivesLigninMulti-faceted roles/functions

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Area of Science:

  • Biomaterials Engineering
  • Sustainable Manufacturing
  • Polymer Science

Background:

  • 3D printing faces environmental challenges due to fossil-derived inks.
  • Lignin, abundant and renewable, offers eco-friendly alternatives.
  • Lignin's properties (functional groups, aromatic structure, thermoplasticity) suit printable ink formulation.

Purpose of the Study:

  • To review lignin's use in 3D printing inks (≥50 wt%) for photo-curing (SLA/DLP) and extrusion (DIW/FDM) technologies.
  • To explore lignin's role as a functional additive in 3D printing inks.
  • To evaluate lignin's impact on ink and printed object properties.

Main Methods:

  • Comprehensive literature review on lignin-based 3D printing inks.
  • Analysis of lignin modification and its role in ink formulation.
  • Evaluation of lignin's influence on rheological, mechanical, and printability properties.

Main Results:

  • Lignin can be the primary component (≥50 wt%) in printable inks for various 3D printing methods.
  • Lignin acts as a versatile additive, enhancing ink properties.
  • Lignin incorporation affects the rheology, printability, and final properties of 3D printed objects.

Conclusions:

  • Lignin is a viable, sustainable feedstock for advanced 3D printing applications.
  • Further research can optimize lignin-based inks for high-value products.
  • Overcoming challenges in lignin processing can unlock its full potential in additive manufacturing.