https://scholars.lib.ntu.edu.tw/handle/123456789/410459
標題: | Effect of compatibilizer on compatibility and pervaporation performance of PC/PHEMA blend membranes | 作者: | De Guzman M. Liu P.-Y. Chen J.-T. Tung K.-L. Lee K.-R. Lai J.-Y. |
關鍵字: | Compatibilizer;Free volume;Polymer blend;Positron annihilation lifetime spectroscopy | 公開日期: | 2011 | 卷: | 378 | 期: | 1-2 | 起(迄)頁: | 503-511 | 來源出版物: | Journal of Membrane Science | 摘要: | This study made use of the technique of positron annihilation spectroscopy (PALS) to examine the effect of a compatibilizer additive on the compatibility in a blend membrane of polycarbonate (PC) and poly(2-hydroxyethyl methacrylate) (PHEMA) and on the pervaporation (PV) performance of the compatibilized blend membrane. Scanning electron microscopy (SEM) showed that a blend membrane consisting of only PC and PHEMA apparently had some extent of incompatibility between the component polymers. An attempt to improve the compatibility was done by adding a graft copolymer (PC-g-PHEMA) compatibilizer. Results indicated that the addition of this compatibilizer could increase the extent of compatibility in the blend as shown by the SEM micrographs, strengthen thermal stability based on the thermal gravimetric analysis (TGA) thermograms, and effectively improve the pervaporation performance of the compatibilized blend membranes. The improvement in the compatibility, associated with better interfacial adhesion, was correlated with the microstructural properties obtained from PALS, such as ortho-positronium (o-Ps) lifetime and intensity, free volume size and distribution, and fractional free volume. ? 2011 Elsevier B.V. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/410459 | ISSN: | 03767388 | DOI: | 10.1016/j.memsci.2011.05.035 |
顯示於: | 化學工程學系 |
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