The construction industry faces significant challenges related to environmental sustainability, including high carbon emissions and excessive reliance on non-renewable resources. Traditional construction materials often have substantial environmental footprints. Lignin-cellulose composites, derived from renewable resources such as wood waste, can offer a promising eco-friendly alternative. However, achieving the necessary mechanical properties, printability, and scalability for practical construction applications remains a critical challenge.

This research explores the potential of lignin-cellulose biocomposites as sustainable alternatives to traditional construction materials. The study focuses on developing bio-based polymers through lignin-cellulose composites combined with bio-based binders and plasticizers, aiming to create a material suitable for hot extrusion-based additive manufacturing. By utilizing robotic additive manufacturing and parametric design approaches, the research addresses the challenges and opportunities of using bio-based materials in construction, with a primary focus on creating modular partition walls.

The primary objective of this research is to develop and optimize three distinct lignin-cellulose composite ratios, each tailored to different mechanical strength requirements. These ratios correspond to three types of bricks, strategically implemented within the partition wall according to their structural demands. Mechanical properties, rheological behavior, and printability are evaluated through a combination of experimental methods and extrusion-based fabrication processes.

Further, this study develops and tests computational slicing workflows tailored for robotic hot extrusion. Through a comparative analysis of different slicing strategies and tools, the research seeks to improve the translation of complex architectural designs into feasible robotic printing paths, optimizing material distribution according to structural performance requirements.

By integrating material innovation with computational manufacturing techniques, this research aims to demonstrate how high lignin-cellulose biocomposites can serve as a sustainable and structurally viable alternative to conventional materials. The findings will contribute insights into the advancement of bio-based composites, robotic fabrication, and computational design strategies for sustainable construction.