[1PS-085]
우수논문발표상 응모자Probing the role of end-group chemistry on the interfacial tension of short-chain complex coacervates
발표자김연서 (울산과학기술원)
연구책임자이동욱 (울산과학기술원)
Abstract
Complex coacervation, the liquid–liquid phase separation phenomenon, is commonly driven by electrostatic interactions. Typically, the interfacial tension of coacervate increases with a higher degree of polymerization (DP). In this study, we investigated coacervates synthesized from poly(allyl glycidyl ether) backbones functionalized with amine and sulfonate groups across varying DPs. Utilizing a surface forces apparatus (SFA), we quantified interfacial tension as a function of salt concentration. Notably, the DP20 coacervate exhibited an outstanding interfacial tension among them. This result is potentially driven by the high relative density of terminal phenyl groups in short-chain architectures, which may introduce significant non-electrostatic contributions. These findings suggest that coacervate interfacial properties can be strategically tuned by balancing DP and end-group chemistry, providing a robust framework for engineering high-performance adhesive interfaces.