Novel galactarate-based plasticizers

Carbohydrates represent some of the most abundant biopolymers on Earth and provide a valuable feedstock for the production of high-value chemicals. Galactaric acid is a particularly appealing bio-based platform molecule whose potential remains underexplored [1,2]. At present, increasingly demanding regulations, sustainability goals, safety-by-design principles, and performance criteria are reshaping the development of polymer additives. Consequently, innovation must advance rapidly to create novel materials with improved functionality. To address this need, new galactaric acid-derived sugar-based plasticizers were synthesized. Poly(lactic acid) (PLA), a brittle bio-based polymer, was chosen to assess their effectiveness in enhancing mechanical performance [3]. The most effective additive increased the elongation at break by up to 260% relative to neat PLA. Experimental findings, supported by computational analyses, demonstrate that subtle changes in molecular structure can significantly affect both the synthesis and performance of these additives [4].