Preparation and Characterization of PAN Membrane Modified with Thermo-sensitive NIPAAm
碩士 === 國立臺灣科技大學 === 纖維及高分子工程系 === 89 === Polyacrylonitrile (PAN) membranes were hydrolyzed with NaOH(aq) to convert the surface into polyacrylic acid (PAA). The surface was then reacted with isopropylamine and produced a layer of poly(N-isopropyl acrylamide) (PNIPAAm). Because of the PA...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2001
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| Online Access: | http://ndltd.ncl.edu.tw/handle/60377423070961187561 |
| Summary: | 碩士 === 國立臺灣科技大學 === 纖維及高分子工程系 === 89 === Polyacrylonitrile (PAN) membranes were hydrolyzed with NaOH(aq) to convert the surface into polyacrylic acid (PAA). The surface was then reacted with isopropylamine and produced a layer of poly(N-isopropyl acrylamide) (PNIPAAm). Because of the PAA surface, the membrane is sensitive to pH. Because of the PNIPAAM layer, the membrane is sensitive to temperature. The separation performance of the membranes was evaluated with the hydraulic permeability (Lp) and the retention (R%) of dextran under varying temperature and pH. The results show that the Lp dropped at around 50°C. In addition, the Lp decreased by 10% when the pH increased from 6 to 8.
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