SPP 1273:  Colloid Process Engineering

• Subject Area: Thermal Engineering/Process Engineering ; Chemistry
• Term: from 2007 to 2016
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 25924525

Colloidal systems are collectives of particles whose macroscopic properties are determined by the microscopic interactions of their disperse components among each other and with the dispersant. This is the case especially in the sub-micron size range. Due to the large internal surface of particulate systems of this kind, interfacial and not volume effects dominate their properties.
Colloid process engineering is the handling and manipulation of colloidal systems in and by technical processes. This field offers many promising routes to novel products with tailored properties in various industrial sectors. Colloidal systems possess ideal prerequisites for the realisation of tailored integrated product systems. Colloid process engineering is indispensable for the bulk production of colloidal systems.
In the past few years a breathtaking development of the analytical possibilities concerning colloidal systems has taken place. As an example, members of the emphasis programme have recently accomplished the time-resolved observation of processes during the formation of colloids via x-ray scattering and cryo-TEM for the first time world-wide. These new measurement methods offer the potential of a dynamic advancement of the understanding of the formation of colloidal systems in science and engineering and its application in novel products.
Future challenges in colloid process engineering lie in the development of appropriate apparatus and processes for the production and conservation of multiphase structures and energetic interactions in commercial quantities. To enable controlled production the relevant processes must be fundamentally understood and applied across scales. The scientific goals of the Priority Programme lie in this field. To narrow the focus of the Priority Programme and to distinguish it from other research activities, only liquid and solid colloidal particles in liquid dispersants will be considered here. Priority Programme is especially interested in questions concerning the manipulation of colloidal systems in liquid dispersants during their formation and the subsequent processes.

• DFG Programme: Priority Programmes
• International Connection: Switzerland

Projects

• Charakterisierung von Grenzflächen zwischen zwei Flüssigkeiten unter hoch-dynamischen Bedingungen (Applicant Miller, Reinhard )
• Control of interactions and dynamics in colloidal dispsersions (Applicant von Klitzing, Regine )
• Dynamik kolloidaler Suspensionen: Wachstum, Aggregation, Reorganisation und Trocknung (Applicant Auernhammer, Günter K. )
• Dünnschichtfiltration zur mechanischen Abtrennung fester kolloidaler Partikelsysteme aus einer Suspension (Applicant Nirschl, Hermann )
• Fluidization of highly concentrated colloidal dispersions by tailoring of attractive interactions (Applicants Bartsch, Eckhard ;  Willenbacher, Norbert )
• Fourier Transformations Rheologie als neue nichtlineare mechanische Charakterisierungsmethode für Emulsionen und Suspensionen auch mittels simultaner Kleinwinkellichtstreuung und NMR Charakterisierung (Applicant Wilhelm, Manfred )
• Fällung und chemische Desintegration von polydispersem Titan(IV)-oxid (Applicant Tomas, Jürgen )
• Herstellung polymerbeschichteter Nanopartikel durch Hochdruckhomogenisation partikelbeladener Monomere mit nachfolgender Miniemulsionspolymerisation (Applicants Karbstein, Heike ;  Landfester, Katharina )
• Herstellung und Strukturierung von Halbleiternanopartikeln (Applicant Peukert, Wolfgang )
• Kleinmolekül-Stabilisierung von Metalloxid-Nanopartikeln (Applicant Garnweitner, Georg )
• Kolloidale Kapselsysteme und deren Erzeugung mittels Dynamischer Nano- Membrantechnik (K2-DYNAM) (Applicant Windhab, Erich J. )
• Kontrolle von Vesikelsystemen mit Hilfe amphiphiler Copolymerer (Applicant Gradzielski, Michael )
• Koordinatorfonds (Applicant Kind, Matthias )
• Mechanistic modeling of restructuring behavior of colloidal aggregates in shear flows (Applicants Behr, Ph.D., Marek ;  Briesen, Heiko )
• Modellierung der Kapillarkräfte bei der Konvektionstrocknung von Gelen: Einfluss von Produkt- und Prozessparametern auf Strukturerhaltung und Strukturänderung (Applicant Tsotsas, Evangelos )
• Nanopartikel zur Stabilisierung von Emulsionen (Applicant Simon, Frank )
• NMR-Untersuchungen zum Einfluss des Herstellungsprozesses auf die Eigenschaften kolloidaler Gele auf Amphiphil/Wasser-Basis (Applicant Schmidt, Claudia )
• Prozessentwicklung eines Flüssig-Flüssig-Phasentransfers kolloidaler Partikel zur Herstellung hochwertiger Organosole (Applicants Peuker, Urs ;  Schmid, Hans-Joachim )
• Simulation turbulenter kolloidaler Systeme und Vorhersage der Agglomeratmorphologie (Applicant Sommerfeld, Martin )
• Steuerung und Modellierung der Aggregation und Redispergierung gefällter Nanopartikel (Applicant Kwade, Arno )
• Teilchenbildung aus der homogenen Phase untersucht mit Hilfe von Streumethoden (Applicant Ballauff, Matthias )
• Thermodynamisch stabile Pickering-Emulsionen (Applicant Wüstneck, Rainer )
• Untersuchungen zur Reorganisation von anorganischen kolloidalen Agglomeraten und Gelen III - Umsetzung in neue Verfahren (Applicant Kind, Matthias )
• Vesikelbildung durch Phasentransfer von Emulsionen oder Mikroemulsionen (Applicant Rehage, Heinz )

• Spokesperson: Professor Dr.-Ing. Matthias Kind