|
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 |
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