Synthetic biodegradable wax, an alternative approach to the conventional petroleum-based plastics in packaging

Paraffin waxes are widely used in paper packaging to meet water- and oil-repellency requirements, but such wax-coated paper is difficult to recycle and also has lower pr no biodegradation. This study demonstrates the synthesis and performance evaluation of bio-based and biodegradable synthetic waxes with the potential for repulpability. The biodegradation and repulping of these waxes are ensured by incorporating lactic/glycolic linkages into their structure. The obtained waxes were then applied onto kraft paper, and the coated papers were evaluated for its thermal, mechanical, and water/oil resistance. In addition, the synthetic waxes were added a few percent of natural waxes and evaluated for their performance. Furthermore, the degradability of the waxes is also evaluated under mildly alkaline conditions to assess their suitability for repulping. This work will not only enhance green packaging but also meet green chemistry principles such as waste prevention (no microplastics), the promotion of renewable feedstocks, and the design of biodegradable packaging.