Formation of honeycomb polysulfone film with controlled wettability by surfactant-assisted electric breath figure |
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| Authors: | Ben Fei Di-Lai Lu |
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| Affiliation: | 1. State Key Laboratory for Modification of Chemical Fiber and Polymer Materials and Polymer Department, Donghua University, Songjiang, Shanghai, P.R. China;2. School of Chemical Engineering, Northwest University, Xi’an, P.R. China |
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| Abstract: | A surfactant-assisted electric breath figure method, SAEBF, was applied to form the polysulfone, PSF, film. Experimentally, the sodium dodecyl-benzenesulfonate, SDDBS, was employed and the voltage was varied. FESEM images showed that the SAEBF formed PSF films have the honeycomb structure and the pore diameter was reduced with the applied voltage increase. Water contact angle on the honeycomb PSF film surfaces was found to increase with the applied voltage increase and there has a critical voltage at about 0.6 kV among those applied voltages because the applied voltage at lower or higher caused the film surface in hydrophilic or hydrophobic, respectively. A related mechanism was discussed. |
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| Keywords: | Polysulfone surfactant-assisted electric breath figure honeycomb structure hydrophilicity and hydrophobicity |
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