English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Analysis of a technical-grade w/o-microemulsion and its application for the precipitation of calcium carbonate nanoparticles

Rauscher, F., Veit, P., & Sundmacher, K. (2005). Analysis of a technical-grade w/o-microemulsion and its application for the precipitation of calcium carbonate nanoparticles. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 254(1-3), 183-191. doi:10.1016/j.colsurfa.2004.11.034.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-9C7A-5 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-7A98-7
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Rauscher, Frank1, Author              
Veit, P.2, Author
Sundmacher, Kai1, 3, Author              
Affiliations:
1Process Systems Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society, ou_1738151              
2Otto-von-Guericke-Universität MagdeburgFakultät für NaturwissenschaftenInstitut für Experimentelle PhysikUniversitätsplatz 239106 Magdeburg, ou_persistent22              
3Otto-von-Guericke-Universität Magdeburg, External Organizations, ou_1738156              

Content

show
hide
Free keywords: -
 Abstract: For a directed synthesis of inorganic nanoparticles in water-in-oil (w/o)-microemulsions the detailed investigation of the microemulsion system is of particular importance. This study illustrates that the phase behavior of the ternary as well as of the quaternary mixture (with reactants) has to be analyzed to identify microemulsion regions suitable for particle synthesis. Besides detailed phase prism investigations the microemulsion, consisting of water/reactant, cyclohexane and Marlipal O13/40, was further characterized. Dynamic light scattering studies have been conducted for determining the droplet size and viscosity measurements have been undertaken to clarify the internal structure. A time scale analysis of the involved processes during particle formation (e.g. droplet exchange, reaction, nucleation, growth and mixing) points out, that the utilization of w/o-microemulsions for precipitation reactions is an effective way to overcome mixing problems which usually are present in bulk precipitation. This is demonstrated for the precipitation of CaCO3 from two microemulsions containing dissolved Na2CO3 and CaCl2 respectively. The influence of microemulsion composition, initial reactant concentration and holding time on the final particle size and shape was investigated. The resulting CaCO3 nanoparticles have been characterized by means of a transmission electron microscope. Depending on the applied reaction conditions it is shown that different particle sizes and morphologies can be obtained.

Details

show
hide
Language(s): eng - English
 Dates: 2005
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: eDoc: 208432
Other: 31/05
DOI: 10.1016/j.colsurfa.2004.11.034
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Colloids and Surfaces A: Physicochemical and Engineering Aspects
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 254 (1-3) Sequence Number: - Start / End Page: 183 - 191 Identifier: -