Hanyang University · Engineering
Professor Seong-Geun Oh's research lab specializes in soft matter and colloid science, focusing on the self-assembly behavior of surfactants, micellar systems, and stimuli-responsive polymers. The lab investigates the interplay between molecular structure, micellar stability, and macroscopic properties such as foamability and solubilization efficiency. A key research direction involves the design and synthesis of functional hybrid materials, particularly thermoresponsive polymer-silica composites for advanced applications in drug delivery and smart materials. The lab also explores dynamic processes in soft systems using techniques like pressure-jump relaxation and kinetic analysis.
Figures are computed from collected data and may differ slightly.
The slow relaxation time (τ 2 ) of sodium dodecyl sulfate (SDS) micelles, measured by the pressure‐jump technique, was maximum at 200 mM concentration at 25°C, indicating that the most stable micelles are formed at this concentration. This is presumably related to the optimum molecular packing in the micelle. The rate of solubilization of benzene and Orange OT dye into SDS solutions was also maximum at 200 mM concentration. The results are explained as follows: The distance between micelles ( i.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRelationship between micellar lifetime and foamability of sodium dodecyl sulfate and sodium dodecyl sulfate/1-hexanol mixturesSeong Geun Oh and Dinesh O. ShahCite this: Langmuir 1991, 7, 7, 1316–1318Publication Date (Print):July 1, 1991Publication History Published online1 May 2002Published inissue 1 July 1991https://pubs.acs.org/doi/10.1021/la00055a004https://doi.org/10.1021/la00055a004research-articleACS PublicationsRequest reuse permissionsArticle V
Abstract In this study, the composites of thermoresponsive poly( N ‐isopropylacrylamide) (PNIPAm) and mesoporous silica particles were synthesized. 3‐(Trimethoxysilyl)propyl methacrylate (MOP) was used to introduce double bonds on silica particles. First, MOP‐modified spherical silica particles were prepared by the sequential addition of tetraethyl orthosilicate (TEOS) and MOP into W/O (water‐in‐oil) emulsion. Second, PNIPAm‐grafted silica microparticles were synthesized by the radical copolymer
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