Preparation of Epoxy Membrane with Different Surface Morphologies via Chemically Induced Phase Separation
| Autor: | Chiu-Ya Wang, 王秋雅 |
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| Rok vydání: | 2010 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 98 Porous epoxy networks were prepared from epoxy resin, D.E.R. 331, cured with tertiary amine: 2,4,6-tris-(dimethylaminomethyl) phenol (DMP-30), in the diisobutyl ketone (DIBK). After removing the solvent, epoxy thermosets with interconnected channels can be formed via chemical induced phase separation, CIPS. Furthermore, different contact sheets were use to control the surface morphology of the epoxy membrane. The morphology of membranes was observed by a SEM. It was demonstrated that the epoxy membranes could be controlled by the different contacting sheets. While Teflon-1 (ASF-110) as contacting sheet, the membrane has larger surface pore size and porosity. The interconnected structure of the epoxy matrix was further confirmed by a permeation test, and the permeability of ethanol is about 2-4700 L/m2‧h‧bar which are dependent on the porous structure. Glass transition temperatures of the cured porous epoxy networks are all higher than 100oC. The temperatures of the 5% weight loss and the maximum decomposition rate determined by a TGA are higher than 350oC and 430oC, respectively. The epoxy membranes have high tensile modulus (0.7~2.0GPa) and tensile strength (6.3~31.1 MPa). |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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