Additive manufacturing (or 3D printing) has re-emerged into the spotlight in the last 5 years driven by the rapid progress in hardware and software. Along with these advances, new materials are required to meet the demands of emerging technologies. Herein, we present multi-stimuli-responsive hydrogels designed for direct-write 3D printing. Triblock copolymers based on F127 or poly(alkyl glycidyl ethers) were developed and formulated into stimuli-responsive hydrogels that (1) underwent a reversible sol-gel transition in response to temperature, (2) exhibited shear-thinning behavior, and (3) cross-linked in the presence of UV-irradiation. The syntheses, characterization, and patterning of these materials will be presented. The application of these polymer hydrogels toward printing microbes for immobilized whole-cell catalysis will also be discussed.

Polymeric hydrogels for the fabrication of engineered living materials

ACS Fall 2021

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