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Synthesis, Surface Activity, and Foamability of Two Short-Chain Fluorinated Sulfonate Surfactants with Ether Bonds
Langmuir ( IF 3.7 ) Pub Date : 2023-10-06 , DOI: 10.1021/acs.langmuir.3c01623 Shanwei Guo 1 , Yong Guo 2, 3 , Meiwei Huang 2 , Libo Qian 2, 3 , Zhaoben Su 2 , Qing-Yun Chen 2, 3 , Chengying Wu 4 , Chao Liu 1
Langmuir ( IF 3.7 ) Pub Date : 2023-10-06 , DOI: 10.1021/acs.langmuir.3c01623 Shanwei Guo 1 , Yong Guo 2, 3 , Meiwei Huang 2 , Libo Qian 2, 3 , Zhaoben Su 2 , Qing-Yun Chen 2, 3 , Chengying Wu 4 , Chao Liu 1
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Fluorinated surfactants are widely used in many fields because of their excellent surface active properties, but their high stability has caused many environmental problems. With the ban and restriction of classical long-chain fluorinated surfactants such as perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) worldwide, the development and replacement of their alternatives is now a major challenge. How to reduce environmental persistence, bioaccumulation, and biotoxicity while maintaining high surface activity has become an important issue in the development of fluorinated surfactants. Using short-chain fluorinated surfactants is one of the important solutions to resolve the pollution of organic fluorinated compounds. In this article, we synthesized two short-chain fluorinated surfactants with ether bonds. One of them 6:2 FTESNa (2) used the perfluoroalkyl chain (n-C6F13-) and the other C72 FEESNa (4) used the fluoroether segment with six fluorinated carbons and two oxygens (CF3OCF(CF3)CF2OCF(CF3)). The surface activity, foam performance, and wettability of the two molecules were measured. The surface tensions at critical micelle concentration (γcmc) and the critical micelle concentration (cmc) of 2 and 4 were 17.6 mN/m (2.2 g/L) and 20.2 mN/m (4.6 g/L), respectively. Both of them were significantly superior to the surface activity of 6:2 FTSNa (7) which is one of the current alternatives for PFOS. Additionally, the foamability and foam stability of both 2 and 4 were better than that of 7. In the aspect of wettability on PTFE, that of 4 was greater than those of 2 and 7. In summary, this work provided a new choice for alternatives of PFOS and PFOA.
中文翻译：
两种含醚键短链氟化磺酸盐表面活性剂的合成、表面活性和发泡性
含氟表面活性剂因其优异的表面活性性能而被广泛应用于许多领域，但其高稳定性也造成了许多环境问题。随着全氟辛烷磺酸（PFOS）和全氟辛酸（PFOA）等经典长链氟化表面活性剂在全球范围内的禁用和限制，其替代品的开发和替代现在是一个重大挑战。如何在保持高表面活性的同时降低环境持久性、生物蓄积性和生物毒性已成为含氟表面活性剂发展的重要问题。使用短链含氟表面活性剂是解决有机含氟化合物污染的重要解决方案之一。在本文中，我们合成了两种带有醚键的短链氟化表面活性剂。其中一个 6:2 FTESNa ( 2 ) 使用全氟烷基链 ( n -C 6 F 13 -)，另一个 C72 FEESNa ( 4 ) 使用具有六个氟化碳和两个氧的氟醚链段 (CF 3 OCF(CF 3 ) CF 2 OCF(CF 3 ))。测量了两种分子的表面活性、泡沫性能和润湿性。2和4的临界胶束浓度(γ cmc )和临界胶束浓度(cmc)下的表面张力分别为17.6 mN/m (2.2 g/L)和20.2 mN/m (4.6 g/L)。两者的表面活性均明显优于 6:2 FTSNa ( 7 )，后者是目前 PFOS 的替代品之一。另外， 2和4的起泡性和泡沫稳定性均优于7。在对PTFE的润湿性方面，4的润湿性大于2和7。综上所述，本工作为PFOS和PFOA的替代品提供了新的选择。
更新日期：2023-10-06
中文翻译：
两种含醚键短链氟化磺酸盐表面活性剂的合成、表面活性和发泡性
含氟表面活性剂因其优异的表面活性性能而被广泛应用于许多领域，但其高稳定性也造成了许多环境问题。随着全氟辛烷磺酸（PFOS）和全氟辛酸（PFOA）等经典长链氟化表面活性剂在全球范围内的禁用和限制，其替代品的开发和替代现在是一个重大挑战。如何在保持高表面活性的同时降低环境持久性、生物蓄积性和生物毒性已成为含氟表面活性剂发展的重要问题。使用短链含氟表面活性剂是解决有机含氟化合物污染的重要解决方案之一。在本文中，我们合成了两种带有醚键的短链氟化表面活性剂。其中一个 6:2 FTESNa ( 2 ) 使用全氟烷基链 ( n -C 6 F 13 -)，另一个 C72 FEESNa ( 4 ) 使用具有六个氟化碳和两个氧的氟醚链段 (CF 3 OCF(CF 3 ) CF 2 OCF(CF 3 ))。测量了两种分子的表面活性、泡沫性能和润湿性。2和4的临界胶束浓度(γ cmc )和临界胶束浓度(cmc)下的表面张力分别为17.6 mN/m (2.2 g/L)和20.2 mN/m (4.6 g/L)。两者的表面活性均明显优于 6:2 FTSNa ( 7 )，后者是目前 PFOS 的替代品之一。另外， 2和4的起泡性和泡沫稳定性均优于7。在对PTFE的润湿性方面，4的润湿性大于2和7。综上所述，本工作为PFOS和PFOA的替代品提供了新的选择。
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