Universität zu Köln

Klemmer, Helge F. M., Harbauer, Carola, Strey, Reinhard, Grillo, Isabelle ORCID: 0000-0002-5774-6773 and Sottmann, Thomas (2016). Formation Kinetics of Oil-Rich, Nonionic Microemulsions. Langmuir, 32 (25). S. 6360 - 6367. WASHINGTON: AMER CHEMICAL SOC. ISSN 0743-7463

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Abstract

The formation kinetics of oil-rich, nonionic microemulsions were investigated along different mixing pathways using a fast stopped-flow device in combination with the new high-flux small-angle neutron spectrometer D33 (ILL, Grenoble, France). While the kinetics along most pathways were too fast to be resolved, two processes could be detected mixing brine and the binary cydohexane/C10E5 solution. Here, too, the formation of large water-in-oil droplets was found to be faster than 20 ms and therewith faster than the accessible dead time. However, subsequently, both the disintegration of the large water-in-oil droplets (600 angstrom) and the uptake of water by swollen micelles (50-60 degrees) could be resolved. Both processes occur on the time scale of a second. Strikingly, the total internal interface forms faster than 20 ms and does not change over time.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Klemmer, Helge F. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Harbauer, Carola UNSPECIFIED UNSPECIFIED UNSPECIFIED Strey, Reinhard UNSPECIFIED UNSPECIFIED UNSPECIFIED Grillo, Isabelle UNSPECIFIED orcid.org/0000-0002-5774-6773 UNSPECIFIED Sottmann, Thomas UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-272000
DOI:	10.1021/acs.langmuir.6b00738
Journal or Publication Title:	Langmuir
Volume:	32
Number:	25
Page Range:	S. 6360 - 6367
Date:	2016
Publisher:	AMER CHEMICAL SOC
Place of Publication:	WASHINGTON
ISSN:	0743-7463
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ANGLE NEUTRON-SCATTERING; IN-WATER EMULSIONS; PHASE-BEHAVIOR; MORPHOLOGICAL TRANSITIONS; INTERFACIAL-TENSIONS; AMPHIPHILIC SYSTEMS; ELECTRON-MICROSCOPY; SURFACTANT SYSTEMS; STOPPED-FLOW; MICROSTRUCTURE Multiple languages Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/27200