蒸汽阶段的交联离子聚合物薄膜的一步合成及其应用于油/水分离膜
Munkyu Joo1, Jihye Shin1, Jiyeon Kim1
1Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141, Korea.
Journal of the American Chemical Society
|January 25, 2017
概括
研究人员使用启动化学蒸汽沉积 (iCVD) 开发了一种用于交联离子聚合物的新型蒸汽相合成. 这一突破使得高流量和高效率的油/水分离膜改造成为可能.
科学领域:
- 聚合物化学
- 材料科学
- 化学工程
背景情况:
- 由于非挥发性离子盐单体,离子聚合物在蒸汽阶段难以合成.
- 现有的方法有限,阻碍了先进的功能材料的开发.
研究的目的:
- 为交联离子聚合物 (CIP) 开发一种新型的一步蒸汽相合成方法.
- 探索这些CIP在油/水分离的表面修改中的应用.
主要方法:
- 使用启动化学蒸汽沉积 (iCVD) 来合成共聚合物薄膜.
- 使用的二甲基甲基酸 (DMAEMA) 和4-乙化 (VBC) 单体.
- 通过Menshutkin反应实现了同时的聚合和离子交联.
主要成果:
- 在蒸汽阶段首次成功合成高度交联的离子共聚合物薄膜 (p(DMAEMA-co-VBC).
- 使用改造膜证明了优异的油/水分离效率 (>99%).
- 实现了前所未有的高透流量 (2.32 × 10^5 L m^-2 h^-1),具有水友和水下油害性质.
结论:
- 该iCVD方法为蒸汽相合成CIP提供了可行的途径.
- 使用CIP的表面修改显著提高了油/水分离膜的性能.
- 这种进步为先进的膜技术开辟了新的可能性.
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