Macroporous polymer thin film prepared from temporarily stabilized water-in-oil emulsion.
We report a simple and convenient method for fabricating ordered porous structure in a polymeric thin film. A temporarily stabilized water-in-oil emulsion, where aqueous droplets were dispersed in the medium of polymer-organic solvent solution, was utilized for the preparation of porous structure. The water-in-oil emulsion was simply prepared by sonicating the mixture of water and polymer-organic solvent solution without any colloid stabilizer. The growth of aqueous droplets was profoundly retarded by dissolving a small amount of sucrose, selectively soluble in the dispersed phase. The prepared emulsion was recovered onto a substrate through dip-coating and subsequently air-dried to get a well-ordered porous polymer film. The polymer content in the polymer solution phase and the compositional ratio of the aqueous phase to the polymer solution phase was optimized to fabricate well-ordered structures.
Ham
Hyeong Taek
HT
Department of Chemical and Biomolecular Engineering, Korea Advance Institute of Science and Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea.
Chung
In Jae
IJ
Choi
Yeong Suk
YS
Lee
Sun Hwa
SH
Kim
Sang Ouk
SO
D001554:Benzene / Q000737:chemistry*; D004655:Emulsions / Q000737:chemistry*; D008567:Membranes, Artificial; D010316:Particle Size; D011108:Polymers / Q000737:chemistry*; D016062:Porosity; D014867:Water / Q000737:chemistry
D004655:Emulsions; D008567:Membranes, Artificial; D011108:Polymers; D014867:Water; D001554:Benzene