Wood-plastic composites (WPCs) are composite materials made from a combination of wood fibers or particles and thermoplastics, such as polyethylene, polypropylene, and polyvinyl chloride. The combination of wood and plastic results in a material that has the look and feel of wood, but with added durability, water resistance, and reduced maintenance requirements. The production of WPCs involves mixing the wood particles or fibers with binders, and then processing the mixture into the desired shape, such as boards, profiles, and tiles. Binders play an important role in the performance of WPC materials. They provide the necessary adhesive strength to hold the composite together and can also help improve the mechanical properties of the material, such as its strength and stiffness. The type and amount of binder used can also impact the final properties of the WPC, such as its water resistance and resistance to decay. Eco-friendly binders are often used in wood-plastic composites (WPCs) as an alternative to traditional petroleum-based binders. Some of the most commonly used eco-friendly binders in WPCs include starch and lignin. Overall, eco-friendly binders offer a more sustainable and environmentally friendly option for binding wood particles in WPCs. They can help reduce the dependence on petroleum-based binders and improve the overall sustainability of WPCs.