119th General Meeting of the KCS

Type Oral Presentation
Area Oral Presentation for Young Polymer Scientists
Room No. 405호
Time THU 09:00-:
Code POLY.O-1
Subject Coupling Phase Separation and Gelation of Covalent Network/Polymer Mixture Toward Facile Synthesis of Nanoporous Covalent Frameworks
Authors 오왕석, 배재성1, 박지웅*
GIST 신소재공학부, Korea
1University of California, San Diego, U.S.A., Korea
Abstract Coupling two different structure-forming mechanisms has been a promising strategy to generate distinctively nanostructured polymeric materials. Recently, we have reported various nanoporous polymers prepared from the polymer/Urea Network(UN) mixtures via organic sol-gel method. Monolithic and co-continuous nanoporous structures could be obtained by spinodal decomposition between polymer and UN followed by polymer extraction. To further understand the relationship between polymer and nanostructure development, we investigated the phase behaviors of polymer/UN mixtures and the resulting porous morphology with various polymers. Physicochemical properties of the polymers, compositions in the blend, and especially kinetic matching of phase separation and gelation dynamics were critical in the morphology evolution. Empirical physical parameters were employed to estimate the governing interactions and give guidance on the polymer candidates. These findings are expected to provide general criteria of polymer that leads to optimized nanoscale architecture required for specific applications.
E-mail wangsuk30000@gist.ac.kr