Surface activity and wetting behavior of branched short‐chain anionic perfluorinated/cationic hydrocarbon surfactant blends in dilute solutions

IF 1.6 4区 工程技术 Q3 CHEMISTRY, APPLIED
Mengyuan Peng, Min Sha, Ding Zhang, Biao Jiang
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引用次数: 0

Abstract

Conventional perfluorooctane sulfonyl fluorosurfactants (PFOS) have caused great harm to human health and the environment, but the irreplaceable properties of fluorosurfactants offer great values. To this end, we have synthesized a highly surface active, environmentally friendly sulfonate surfactant (PBSA) with a perfluorinated branched short chain and systematically investigated its thermal stability, surface properties, wetting performance, and so forth. The minimal surface tension (γCMC) and critical micelle concentration (CMC) of the aqueous solution of PBSA were 22.70 mN/m and 0.067 mmol/L, respectively. In addition, the binary system of PBSA and cetyltrimethylammonium bromide (CTAB) exhibited excellent synergistic effects: γCMC and CMC values were reduced to 18.94 mN/m and 0.008 mmol/L. Moreover, the PBSA/CTAB mixed solution exhibited superb wetting ability: it could achieve complete wetting of PTFE plates at low concentrations (1.82 × 10−3 mol/L), with a minimum wetting concentration of only 2.84 × 10−5 mol/L.
支链短链阴离子全氟/阳离子碳氢化合物表面活性剂混合物在稀溶液中的表面活性和润湿行为
传统的全氟辛基磺酰氟表面活性剂(PFOS)对人类健康和环境造成了极大的危害,但氟表面活性剂不可替代的特性却具有巨大的价值。为此,我们合成了一种具有全氟支化短链的高表面活性、环境友好型磺酸盐表面活性剂(PBSA),并对其热稳定性、表面性质、润湿性能等进行了系统研究。PBSA 水溶液的最小表面张力(γCMC)和临界胶束浓度(CMC)分别为 22.70 mN/m 和 0.067 mmol/L。此外,PBSA 和十六烷基三甲基溴化铵(CTAB)的二元体系表现出了良好的协同效应:γCMC 和 CMC 值分别降低到 18.94 mN/m 和 0.008 mmol/L。此外,PBSA/CTAB 混合溶液还表现出极佳的润湿能力:在低浓度(1.82 × 10-3 mol/L)下就能完全润湿聚四氟乙烯板,最低润湿浓度仅为 2.84 × 10-5 mol/L。
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来源期刊
Journal of Surfactants and Detergents
Journal of Surfactants and Detergents 工程技术-工程:化工
CiteScore
3.80
自引率
6.20%
发文量
68
审稿时长
4 months
期刊介绍: Journal of Surfactants and Detergents, a journal of the American Oil Chemists’ Society (AOCS) publishes scientific contributions in the surfactants and detergents area. This includes the basic and applied science of petrochemical and oleochemical surfactants, the development and performance of surfactants in all applications, as well as the development and manufacture of detergent ingredients and their formulation into finished products.
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