| 학회 | 한국공업화학회 |
| 학술대회 | 2010년 봄 (05/13 ~ 05/14, BEXCO(부산)) |
| 권호 | 14권 1호 |
| 발표분야 | Clean Water |
| 제목 | Membranes with Nanomaterials |
| 초록 | With development of the nano-technology, different kinds of nano-materials have been developed so far. A multi-walled carbon nanotube (MWNT) is one of the nano-materials, which is possible to be used for the membrane formation because of its high conductivity and nano-size inner channel. Also, when treated with strong acidic solution at high temperature, on its surface polar groups such as carboxylic acid and hydroxyl groups are formed, making it hydrophilic, which is good for the dispersion in various solvents such as water, ethanol, NMP, and DMF. So, after modification with a mixture of sulfuric acid and nitric acid at reflux temperature, the MWNTs were used as an additive for the formation of membranes in this study. The effect of MWNTs incorporated for the modification of membrane performances was studied. Two different types of membranes were prepared by using MWNTs: one was polysulfone (PSf) ultrafiltration (UF) membrane and the other was polyvinyl alcohol (PVA) pervaporation membrane. The PSf UF membranes with different contents of MWNTs were prepared by the conventional phase inversion process, and used for water-treatment. On the other hand, the PVA membranes with different amount of MWNTs were prepared by the casting and drying method, and used for the pervaporation separation of water out of ethanol solution containing 10% of water. The two different types of membranes were then characterized with several analytical methods to figure out how the MWNTs were distributed through the membranes and affect on the properties of them: For the PSf membranes, the MWNTs mainly located on the surface of the membranes made them more hydrophilic and improved the selective permeation performances of the membranes. In the case of the PVA membranes, the MWNTs were distributed rather homogeneously throughout the membranes, and affected on the micro-morphology of the membranes, causing them to have different pervaporation performances. |
| 저자 | Jonggeon Jegal |
| 소속 | Korea Research Institute of Chemical Technology |
| 키워드 | blend membrane; multi-walled carbon nanotubes; performance; poly(vinyl alcohol); polysulfone |
