<br/>The structural heterogeneity of isolated lignin is typically regarded as a detriment to its application in soft materials. However, its molecular weight distribution, ability to absorb UV photons, and multitude of reactive hydroxyl moieties actually make lignin a perfect candidate for incorporation into photoactive resins. These materials traditionally contain precisely engineered mixtures of oligomers, diluents, photoinitiators, and UV attenuators, the identity of which could be closely matched by judicious chemical modifications of lignin. Our groups have demonstrated the utility of lignin in such an application, and we used lignin in new resins for desktop 3D printing by stereolithography. In this presentation, I will highlight our latest achievements, including modifications to lignin that work to tune thermal, mechanical, and photoproperties of resins and cured parts from them. I will also outline our future work towards 100% renewable resins and how these could enable very-large format industrial-scale 3D printing by stereolithography.

Lignin-containing UV curable photopolymers for 3D printing by stereolithography

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.