Cellulose-based light-scattering opacifier generation and harnessing technologies​

Titanium dioxide (TiO2) serves as a prevalent opacifier and whitening agent in various industries. However TiO2 production contributes to significant CO2 emissions and environmental degradation. The CELLIGHT project aims to address these issues by developing bio-based alternatives to TiO2 using cellulose-based materials. The project focuses on optimizing the structure of cellulosic materials to enhance light scattering and opacity. Enzymatic, chemical and mechanical techniques will be utilized to introduce advantageous optical structures within cellulosic materials. Through collaboration between research institutions like Aalto University, VTT, and the University of Helsinki, alongside support from industrial partners like Metsä group, Nouryon, PPG-Tikkurila, Nordic Bioproduct Group Oy and Wetend Oy, the project aims to revolutionize the production of cellulose-based opacifiers. By 2035, the CELLIGHT project aims to replace TiO2 with bio-based alternatives, leading to significant reductions in CO2 emissions and offering healthier products for consumers. This transition also presents new economic opportunities for Finland's bioproduct and biotechnology sectors, with the potential for substantial export revenues.