Synthesis and performance of Polystyrene and Poly(ethylene oxide) block copolymers for enhanced oil/water interface activity
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초록
내용
A polymer containing hydrophilic and hydrophobic arms extending to effectively stabilize the oil/water interface with the hydrophobic and hydrophilic blocks solubilized in the oil and water phases, respectively, to minimize the interfacial energy. We synthesized PS/PEO graft copolymers by ROMP polymerization and cross-linked polymers by UV irradiation techniques to prove this hypothesis. Here we report the synthesis of ROMP polymer in the presence of Grubb’s 3rd generation catalyst by using Polyethylene oxide (PEO, Mn= 2.0 kDa) as a hydrophilic and polystyrene (PS, Mn= 2.0 kDa) as hydrophobic macromonomers, self-assembly behavior by using DLS and TEM in DMF/water solvent medium, and interfacial properties of PS/PEO graft and cross-linked polymers by using toluene/water solvent medium.