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Updated: May 25, 2025

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通过RAFT聚合制备,制备具有高开放细胞范围和高性的聚合高内部相乳液膜

Yulan Wu¹, Jie Huang¹, Zanru Guo¹

¹Fujian Provincial Key Laboratory of Modern Analytical Science and Separation Technology, College of Chemistry, Chemical Engineering and Environment, Minnan Normal University, Zhangzhou 363000, China.

|February 26, 2025

概括

这项研究开发了使用丁烯酸乙烯和RAFT聚合的坚固,多孔的多HIPE膜. 这些膜保持高开放细胞结构,并表现出用于先进应用的增强机械性能.

科学领域:

材料科学材料科学材料科学
聚合物化学聚合物化学

背景情况:

具有相互连接结构和高性的多孔聚合物膜对于许多应用至关重要.
聚合高内部相乳液 (polyHIPEs) 具有高孔隙性,但患有脆性,阻碍膜形成.
加入诸如烯酸盐之类的软单体可提高性,但可能导致不稳定性和孔隙崩.

研究的目的:

开发稳定,坚固的多HIPE膜,具有高的开放细胞性.
研究可逆添加-碎片化链转移 (RAFT) 聚合在增强多HIPE膜特性方面的有效性.
为了优化HIPE配方使用丁烯酸和复合乳化剂用于膜制造.

主要方法:

使用Span80/DDBSS复合乳化剂和CaCl2.2.使用高含量 (41.7-75 mol%) 丁烯酸盐的稳定高内相乳液 (HIPEs) 的配方.
通过可逆添加-碎片化链转移 (RAFT) 聚合制备多HIPE膜.
通过拉伸测试和其他方法,对膜特性进行表征,包括开放细胞范围,性和热稳定性.

主要成果:

稳定高烯酸含量高的高烯酸已成功合成.
与自由基聚合相比,RAFT聚合显著提高了多HIPE膜的性和机械性能.
聚HIPE膜 (丁烯酸/烯/双烯比率7/4/1) 呈现出塑性变形,性模量为93.04 ± 12.28 kJ·m-3,开放细胞性为92.35%,以及优异的热稳定性.

结论:

RAFT聚合是一种有效的策略,用于生产坚固,多孔的多HIPE膜.
开发的polyHIPE膜具有高开放细胞性,增强性和热稳定性的理想组合.
这些发现为需要强大的多孔聚合物膜的先进应用铺平了道路.

关键词:

在RAFT的聚合物化过程中,开放细胞范围的范围.在多HIPE膜中.性性性性

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