A class of efficient short-chain fluorinated catanionic surfactants

Abstract

There have been many attempts to find suitable replacements for fluorinated surfactants due to problems related to their bioaccumulation and resistance to biodegradation. Meeting the exceptional performances of these compounds, however, remains largely an unaccomplished challenge. Currently, a solution might be found through the synthesis of new classes of fluorinated compounds that possess reduced environmental impact by following the recommended strategies for their greener and safer design. In this article we report a novel approach by designing a family of catanionic fluorinated surfactants that shows potential for improved degradation, good water solubility, and low Krafft points. Furthermore, these surfactants exhibit excellent fluorine efficiency and effectiveness of surface tension reduction. † Electronic supplementary information (ESI) available: Synthesis and characterisation, melting points, surface tension measurement, mass spectroscopy, 1 H NMR, and 19 F NMR spectroscopy. See

Water-in-CO2 Microemulsions Stabilized by Fluorinated Cation–Anion Surfactant Pairs

“…One approach to obtain average radii from SANS data for the globular and disk-like micelles is via Guinier plot 35 (Ln [I(Q)] vs Q 2 ) as displayed in supporting information (Figure S2). In the all plots of Ln [I(Q)] vs Q 2 , linearity was noted over an extended Q-range, and the slopes enabled calculation of radii of gyration, R g (the slope = -R g 2 /3).…”

Synthesis and Functionalization of Nanoparticles in Supercritical CO2

“…A remarkable strategy to enhance the surfactant efficiency in scCO 2 media is based on the synergistic effect obtained by ion-pairing cationic and anionic surfactants. Sagisaka et al [25] report the properties of short tail, unbranched fluorinated surfactants with sulfate ionic groups and their cationic analogues synthesized by Ve r d i a [ 26].…”

Detergent Compatible Extracellular Lipase from Streptomyces cellulosae AU‐10: A Green Alternative for the Detergent Industry

“…As they have a wide range of applications, they are constantly being developed to maintain quality and environmental standards (Giagnorio, Amelio, Grüttner, & Tiraferri, 2017). However, detergents, one of the major pollutants, have gained a negative image due to serious environmental pollution problems (Vinod, Neha, Shalini, Archna, & Aparna, 2012), accumulation in organisms (Balson et al, 2002), resistance to biodegradation (Verdia, Gunaratne, Goh, Jacquemin, & Blesic, 2016), and a high solid content (Anastas & Lankey, 2000). When calculating the effect of detergents on the environment, the amount of their use, the high temperature, and the high water requirements are also important considerations to decrease the environmental load of the washing industry (Giagnorio et al, 2017).…”