Barrier Molded Fiber Products Based on Recovery and Up-cycling of Paper and Agricultural Wastes via a Pickering Emulsion Approach

Abstract

To reduce plastic pollution, it is of interest to develop biodegradable molded fiber products from recovered cellulose-containing residues as an alternative to single-use plastics. Primary questions to be addressed include how to compound molded fiber products from the recycling of paper or cardboard and agricultural residual wastes via combined vacuum thermo-forming and post-drying or synergistic cold and hot press approaches. In addition, consumers will have high expectations regarding barriers for moisture and grease. It is proposed here to produce uniform barrier molded fiber products via a Pickering emulsion approach with chemically recycled waxes from thermolysis of waste polyolefins. It is further proposed to develop a closed-loop process for recyclable molded products and up-cycling lignocellulosic fibers reinforced biomass-derivable vitrimer bio-composites for sustainable packaging. The development of molded fiber products makes it possible to mitigate the usage of single-use plastics.

Keywords

• molded fiber products
• close-loop recycling
• polyolefin pyrolysis
• pickering emulsions