Living Additive Manufacturing for Complex Gel Formation via Photo-controlled Radical Polymerization Under Ambient Conditions

Poster Session: 

A

Presenter: 

Jessica R. Lamb

Authors: 

Jessica R. Lamb Jeremiah A. Johnson

Author Affiliation: 

Department of Chemistry, Massachusetts Institute of Technology

Abstract: 

Photo-initiated additive manufacturing is a robust material-fabrication technique with numerous applications in coatings, adhesives, microelectronics, and biomaterials. Classical methods rely on irreversibly-initiated free radical polymerizations which create materials with “dead” chain ends. Such processes eliminate the possibility for chain extension that could introduce new monomers and functionality into the material in a living fashion. Recent work from our group demonstrated the first “living” additive manufacturing to transform parent gels into complex daughter gels with spatiotemporal control. While a significant advance, the air-free conditions and synthetically challenging end-linked gels used in the previous study make this method impractical in an industrial setting. In this work, recent results toward living additive manufacturing of randomly crosslinked gels under ambient conditions are presented, and the implications on future directions are discussed.