Plastic pollution represents a pressing environmental issue, with conventional plastic foams exacerbating visual pollution, soil contamination, and the accumulation of microplastics. This study focused on the preparation of fully bio-based foams as a sustainable alternative to petroleum-based counterparts using the emulsion templating method (ETM), employing 4 wt% ethyl cellulose (EC) and 0.6 wt% silicon dioxide (SiO