Studies on the thermodynamic properties of the polymeric cononsolvent system
碩士 === 國立臺灣大學 === 材料科學與工程學研究所 === 89 === This study is about the thermodynamic behavior of the polymeric cononsolvent systems. Two different systems with different solvent-solvent interaction parameters were discussed. Previous discussions of water-methanol-poly(N-isopropylacrylamide) con...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2001
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| Online Access: | http://ndltd.ncl.edu.tw/handle/46109835210364635023 |
| Summary: | 碩士 === 國立臺灣大學 === 材料科學與工程學研究所 === 89 === This study is about the thermodynamic behavior of the polymeric cononsolvent systems. Two different systems with different solvent-solvent interaction parameters were discussed. Previous discussions of water-methanol-poly(N-isopropylacrylamide) cononsolvent system are generally focused on the reason of the behavior of cononsolvency and the theoretical calculations with Flory-Huggins binary interaction parameters. This study introduced a ternary interaction parameter to discuss the phase behavior of this system.
Besides water-methanol-poly(N-isopropylacrylamide) system, N-methyl-2-pyrrolidone -Methylene Chloride – Polyetherimide was discussed either by the ternary interaction parameter and the Fourier Transform Infrared Spectroscopy(FT-IR). We conclude that in a polymeric cononsolvent system, the ternary interaction parameter cannot be neglected. The ternary interaction parameter should be a function of enthalpy and entropy of mixing.
In the preparation of polyetherimide membrane, we found that the solvent-solvent interaction have the dominate influence on the preparation of polymer membrane by this cononsolvent system.
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