Surface Modification of Asymmetric Polysulfone/Polyethylene Glycol Membranes by DC Ar-Glow Discharge Plasma
| Autor: | Thawat Chittrakarn, Suksawat Sirijarukul, Yutthana Tirawanichakul, Chalad Yuenyao |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Polymers and Plastics Article Subject Analytical chemistry 02 engineering and technology Polyethylene glycol Permeation 021001 nanoscience & nanotechnology lcsh:Chemical technology chemistry.chemical_compound Membrane 020401 chemical engineering chemistry PEG ratio Surface modification lcsh:TP1-1185 Gas separation Polysulfone 0204 chemical engineering Phase inversion (chemistry) 0210 nano-technology |
| Zdroj: | International Journal of Polymer Science, Vol 2016 (2016) |
| ISSN: | 1687-9430 1687-9422 |
| Popis: | Polysulfone/polyethylene glycol (PSF/PEG) membranes were prepared by dry/wet phase inversion method. Effects of direct current glow discharge plasma using argon as working gas on morphological structures and gas separation properties of membranes were studied. Alteration of membrane characteristics were analyzed by various techniques like contact angle, scanning electron microscope, Fourier transform infrared spectroscopy, and dynamic mechanical thermal analysis. Gas separation properties were measured in terms of permeation and ideal O2/N2 selectivity. Results showed that hydrophilic and gas separation properties of PSF/PEG membranes increased by plasma surface modification. It was also shown that the dosage of PEG and plasma treatment affected the morphological structures and mechanical and gas separation properties. The macro voids and transmembrane structure disappeared with a little amount of PEG dosage. Pore size and mechanical strength tend to decrease with increasing PEG dosage up to 10 wt%. Glass transition temperature (Tg) receded from 201.8 to 143.7°C for pure PSF and PSF/PEG with PEG dosage of 10 wt%. O2 and N2 gases permeation through the 10-minute plasma treated membranes tend to increase. However, the permeation strongly dispersed when treatment time was more extended. |
| Databáze: | OpenAIRE |
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