Commercial Surfactants for Use in CO2 – a Survey

A. Hebach; A. Oberhof; N. Dahmen; M. Beeh

doi:10.3139/113.100239

Article

Commercial Surfactants for Use in CO₂ – a Survey

A. Hebach , A. Oberhof , N. Dahmen and M. Beeh

Published/Copyright: May 8, 2013

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From the journal Tenside Surfactants Detergents Volume 42 Issue 2

Abstract

This paper reappraises the dry cleaning process using compressed Carbon Dioxide as washing fluid, specifically in view to cleaning enhancement options. At first, the cleaning cycle of the process is presented. Thereafter, suitable surfactant classes are discussed against the background of prolific as well as an environmentally benign process. Among the most promising structures are the alcohol ethoxylates. Their physical properties such as solubility, phase behaviour, and interfacial activity were intensely studied. The performance of test-formulations in cleaning tests is promising and already suitable for outer garment cleaning. A new way of enhanced mechanical action was already demonstrated in a lab-scale apparatus.

Kurzfassung

Dieser Artikel bewertet den Reinigungsprozess mit komprimiertem Kohlendoxid vor allem in Hinblick auf eine Reinigungsverstärkung neu. Ausgehend von dem Reinigungszyklus werden für einen Einsatz denkbare Tensidklassen diskutiert. Diese müssen nicht nur gute Reinigungsergebnisse erzielen, sondern zudem auch umweltverträglich sein. Als vielversprechende Tensidklasse sind die Alkoholethoxylate bezüglich Löslichkeit, Phasenverhalten, Grenzflächenverhalten und Reinigungsleistung intensiv untersucht worden. Mit den erzielten Reinigungsleistungen von Testformulierungen kann heute schon Oberbekleidung gut gereinigt werden. Durch einen zusätzlichen neuartigen Mechanikeintrag mittels Clathraten kann der Partikelabtrag deutlich verstärkt werden.

Keywords:: Surfactants; carbon dioxide; textile cleaning; cleaning tests

Schlüsselwörter: Tenside; Kohlendioxid; Textilreinigung; Reinigungstest

³Dr. Andreas Hebach, Forschungszentrum Karlsruhe Institut für Technische Chemie-CPV Postfach 36 40 D-76021 Karlsruhe

Dr. Andreas Hebach born 1973, studied chemistry at the Ruprecht Karls University of Heidelberg. His field of interest is interfaces of compressible fluids.

Dipl. Phys. Alexander Oberhof born 1947, studied theoretical physics at the Alma-Ata University in Kasachstan. After concluding his studies 1978 he worked as nuclear physicist at the nuclear centre of the Kazakhstan Academy of Sciences. Since 2000 he worked as scientist in the Forschungszentrum Karlsruhe.

Dr. Nicolaus Dahmen born 1962, studied Chemistry at the Ruhr-University Bochum. Since 1992 he is working in the Forschungszentrum Karlsruhe and head of the group: supercritical seperation technique.

Dipl.-Ing. Markus Beeh born 1973, studied chemical engineering at the University Stuttgart. Since 2001 he works as scientist at the Hohenstein Institutes in the field of sustainable laundering and dry-cleaning.

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Received: 2004-9-10

Published Online: 2013-05-08

Published in Print: 2005-04-01

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Articles in the same Issue

https://doi.org/10.3139/113.100239

Keywords for this article

Surfactants; carbon dioxide; textile cleaning; cleaning tests