Laser-induced graphene from lignin : mechanistic insights and applications in electronic materials
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[EMBARGOED UNTIL 12/1/2024] This dissertation presents an innovative investigation into the production of laser-induced graphene from lignin, utilizing techniques like direct laser writing (DLW) and molecular dynamics simulations. It delves into the conversion of lignocellulosic biomass into highly conductive, porous graphene structures using DLW, highlighting the effectiveness of specific pretreatments for creating versatile substrates for electronic applications. The study also revealed a new pathway of converting carbonhydrate into graphene materials through the formation of pseudo-lignin. The dissertation further investigates the relationship between lignin's structure and the properties of LIG, highlighting how lignin's molecular weight and structural characteristics are pivotal in determining LIG's electrical properties and quality. Additionally, the dissertation examines the impact of variations in lignin's molecular structure on LIG properties through computational simulations and machine learning analysis, providing valuable insights for optimizing the production of lignin-based carbon materials. In the final segment of the dissertation, a fully biomass-derived ink was developed. This development significantly enhances the performance and expands the range of applications for LIG, marking a pivotal contribution to the field and emphasizing the potential of sustainable materials in cutting-edge technologies.
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Ph. D.