ArtSea Ink: A colorful, seaweed-based ink for 3D printing

Date:
August 4, 2021
Source:
American Chemical Society
Summary:
Some artists are embracing 3D printing as a new medium, allowing
them to create intricate 3D compositions that are difficult to
produce in any other way. But the rigid, plastic-based materials
used in many 3D printers require high heat for workability. Now,
researchers reporting in ACS Omega have developed a colorful new
ink for 2D and 3D art made of mica pigments in alginate, a sugar
from seaweed that forms a stable gel without heat.



FULL STORY ==========================================================================
Some artists are embracing 3D printing as a new medium, allowing them
to create intricate 3D compositions that are difficult to produce in any
other way. But the rigid, plastic-based materials used in many 3D printers require high heat for workability. Now, researchers reporting in ACS Omega
have developed a colorful new ink for 2D and 3D art made of mica pigments
in alginate, a sugar from seaweed that forms a stable gel without heat.


========================================================================== Although most 3D printers use petroleum-derived raw materials,
alginate has also been explored as an inexpensive bioink. In water, the material forms a viscous gum that transforms into a robust hydrogel when cross-linked with calcium ions. But whereas plastics are available in
many colors, alginate is almost colorless. Because color is such a vital component of art, Anne Arnold and colleagues wanted to add mica powders
to alginate to create a new, vibrant ink for 2D and 3D compositions.

The researchers prepared an 8% alginate solution in water and added one
of eight different colors of mica pigments. The mica powders dispersed completely in alginate solutions -- creating vibrant, pearlescent
colors. The researchers could control the consistency of the media
by adding more or less of the calcium chloride crosslinker. The team demonstrated the new bioinks, which they call ArtSea Ink, by 3D printing
2D art of a firefly, with a glow-in-the-dark additive to depict its
abdomen, and a 3D structure showing the anatomy of the human brain. The
3D structures were stable over a period of several weeks if kept in a
neutral, 200 mM calcium chloride solution. Although the alginate art
currently isn't stable over the long term, this could actually be an
advantage because the material, unlike plastic, will biodegrade quickly
if discarded, the researchers say.

========================================================================== Story Source: Materials provided by American_Chemical_Society. Note:
Content may be edited for style and length.


========================================================================== Journal Reference:
1. Anne M. Arnold, Zachary C. Kennedy, Joshua A. Silverstein, Jacob F.

Ellis, Janine R. Hutchison. Pearlescent Mica-Doped Alginate as a
Stable, Vibrant Medium for Two-Dimensional and Three-Dimensional
Art. ACS Omega, 2021; 6 (29): 18694 DOI: 10.1021/acsomega.1c01453 ==========================================================================

Link to news story: https://www.sciencedaily.com/releases/2021/08/210804123532.htm

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