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3-D Printing
Chemistry In Pictures
Chemistry in Pictures: When your gel looks like a scrunchie
by Manny I. Fox Morone
April 27, 2021
Credit: Lynn Stevens
Right before her eyes, Lynn Stevens’s hydrogel wrinkled into itself as it solidified on a glass slide. Stevens, a PhD candidate in Zachariah Page’s lab at the University of Texas at Austin, makes hydrogels like this one with an eye toward 3D printing and biomedical applications. While shining green light on the reactants that created the material—water, gel monomers, a photocatalyst, a photoinitiator, and a co-initiator—they reacted so quickly that they generated enough heat to evaporate the water inside the gel as it solidified. Because that water evaporated, the structure of the gel scrunched and buckled into itself to make up for the lost volume, leading to these wavy wrinkles.
Credit: Lynn Stevens
Submitted by Lynn Stevens. Follow @organic_synthesis on Instagram
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Chemical & Engineering News
ISSN 0009-2347
Copyright © 2024 American Chemical Society
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