[1PS-048]
우수논문발표상 응모자Improving the Processability of Biodegradable Poly(pentylene adipate-co-terephtalate) via Molecular Engineering using Long-Chain Diacids
발표자김유경 (한국화학연구원)
연구책임자전현열 (한국화학연구원), 서진영 (한국화학연구원)
Abstract
Poly(pentylene adipate-co-terephthalate) (PPeAT) is a biodegradable aliphatic-aromatic polyester with promising potential for sustainable material applications. However, its inherently low crystallinity limits chain ordering and processing performance. Herein, we try to enhance crystallinity of PPeAT using long-chain aliphatic dicarboxylic acid. These extended alkylene segments promote enhanced molecular packing and crystallization through improved chain alignment and intermolecular interactions. The resulting copolyesters were synthesized via melt polycondensation following an initial esterification step, achieving high weight-average molecular weights. Differential scanning calorimetry (DSC) analysis confirmed a significant increase in crystallinity. These results demonstrate that structural modification using long-chain dicarboxylic acids offers a viable strategy to tune and enhance the crystallinity of PPeAT-based biodegradable polymers.