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ID: 124491.0, MPI für Dynamik komplexer technischer Systeme / Physical and Chemical Process Engineering
Size control of particles using w/o-microemulsions - investigation of the phase behavior
Authors:Rauscher, F.; Sundmacher, K.
Language:English
Date of Publication (YYYY-MM-DD):2002
Title of Proceedings:Nanoscience and Nanotechnology ; Vol. 3
Start Page:77
End Page:80
Name of Conference/Meeting:Fourth Annual Workshop on Nanoscience & Nanotechnology
Place of Conference/Meeting:Sofia, Bulgaria
(Start) Date of Conference/Meeting
 (YYYY-MM-DD):
2002-10-17
End Date of Conference/Meeting 
 (YYYY-MM-DD):
2002-10-19
Review Status:not specified
Audience:Experts Only
Intended Educational Use:No
Abstract / Description:This study investigates the phase behavior and droplet size distribution of a w/o-microemulsion which should serve as a reaction medium for precipitation reactions. The selected emulsion systems consists of water respectively aqueous salt solution, cyclohexane, and the commercial nonionic surfactant Marlipal O13/40. The investigations were focused on the oil-rich part of the ternary system, where a stable dispersion of nanoscale water droplets in a continuous oil phase is formed. Starting with the system water/cyclohexane/surfactant, the influence of various salts at different concentrations on the location of the w/o-microemulsion region in the phase prism was analyzed. These measurements are very important, because the existence of such stable regions is a precondition for precipitation of nanoparticles, from the mixture of two microemulsions. The initial microemulsions should have identical compositions with respect to the weight fractions of salt solution, oil and surfactant and both should be stable at the same temperature. The aim of this study is to identify such points in the phase prism and to determine the droplet size distribution (DSD) at these points.
External Publication Status:published
Document Type:Conference-Paper
Communicated by:Kai Sundmacher
Affiliations:MPI für Dynamik komplexer technischer Systeme/Physical and Chemical Process Engineering
Identifiers:ISBN:954-580-139-5
LOCALID:860
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