Preparation and Performance of Catanionic Surfactants
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Hui-Cheng Yan
Abstract
A series of catanionic surfactants based on the general formula CH3CH2(CH2)11CH2N+(CH3)3 · −OOCCH2(CH2)nCH2CH3 (n = 2, 4, 6, 8, 10) were synthesized, and measured their critical micelle concentrations (CMC) and the corresponding surface tension at CMC (γCMC). The results revealed that the surface tensions of water were decreased to 21–34 mN · m−1 when applying these surfactants at a concentration range from 10−3 to 10−4 mol · L−1. Moreover, the performance of foaming, emulsification, anti-static and rewetting of the surfactants were investigated and the results showed that both the rewetting and emulsifying ability of the prepared surfactants were much better than that of conventional surfactants. In addition, the anti-static and foaming properties were also improved at the same condition compared to that of conventional surfactants.
Kurzfassung
Eine Reihe katanionischer Tenside basierend auf der allgemeinen Formel CH3CH2(CH2)11CH2N+(CH3)3 · −OOCCH2(CH2)nCH2CH3 (n = 2, 4, 6, 8, 10) wurde synthetisiert und ihre kritischen Mizellbildungskonzentrationen (CMC) und ihre entsprechenden Oberflächenspannungen bei der CMC (γCMC) wurden bestimmt. Die Ergebnisse zeigten, dass die Oberflächenspannung von Wasser auf 21–34 mN m−1 sinkt, wenn die Konzentration der Tenside im Bereich von 10−3 bis 10−4 mol L−1 liegt. Des Weiteren wurde die Leistung der Tenside bei der Schaumbildung, die Emulsionsbildung, der Antistatik, und der Benetzung untersucht. Die Ergebnisse zeigten, dass beides, die Benetzung und die Fähigkeit der Emulsionsbildung der hergestellten Tenside deutlich besser waren als die der konventionellen Tenside. Zusätzlich wurden die antistatischen und die schaumbildenden Eigenschaften bei den gleichen Bedingungen im Vergleich zu den konventionellen Tenside verbessert.
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© 2012, Carl Hanser Publisher, Munich
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Articles in the same Issue
- Contents/Inhalt
- Contents
- Abstracts
- Abstracts
- 7th European Detergents Conference (EDC)
- Biosurfactants as Antimicrobial Ingredients for Cleaning Products and Cosmetics
- Scientific Results and Economic Effects from the Centre for Surfactants Based on Natural Products (SNAP)
- Application
- Preparation and Performance of Catanionic Surfactants
- Environmental Chemistry
- Acrylic Acid-Allylpolyethoxy Carboxylate Copolymer Dispersant for Calcium Carbonate and Iron(III) Hydroxide Scales in Cooling Water Systems
- Novel Surfactants
- Lyotropic Liquid Crystals Formed in Brij35/Copolymer/Water System
- Physical Chemistry
- Micellization of Alkyl Trimethyl Ammonium Bromides in Aqueous Solutions–Part 1: Critical Micelle Concentration (CMC) and Ionization Degree
- Review
- Electrical Properties of PANI/Chalcogenide Junctions Doped with Ionic Liquids Anions
- Synthesis
- Synthesis of Quaternary Derivatives of Ortho-Coco Di-Amido Toluene and Investigation of these Compounds as Cationic Bitumen Emulsifier
- Synthesis and Surface Activity of Guerbet Betaine Surfactants with Ethylene Oxide Groups
- Research Group Portrait
- Investigations in the Stranski-Laboratorium of the TU Berlin – Physical Chemistry of Colloidal Systems – Going Towards Complexity and Functionality