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SUPERFOAM SIGNED

Structure-Property Relations in Aqueous Foam and Their Control on a Molecular Level

Total Cost €

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EC-Contrib. €

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Partnership

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Project "SUPERFOAM" data sheet

The following table provides information about the project.

Coordinator
WESTFAELISCHE WILHELMS-UNIVERSITAET MUENSTER 

Organization address
address: SCHLOSSPLATZ 2
city: Munster
postcode: 48149
website: www.uni-muenster.de/en/

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Germany [DE]
 Total cost 1˙499˙875 €
 EC max contribution 1˙499˙875 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2014-STG
 Funding Scheme ERC-STG
 Starting year 2015
 Duration (year-month-day) from 2015-03-01   to  2020-02-29

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    WESTFAELISCHE WILHELMS-UNIVERSITAET MUENSTER DE (Munster) coordinator 1˙147˙569.00
2    FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN NUERNBERG DE (ERLANGEN) participant 352˙305.00

Map

 Project objective

Foams are of enormous importance as we find them in many technological relevant applications and food products. Foams as hierarchical materials are dominated by the arrangement and distri-bution of gas bubbles on a macroscopic scale, as well as by thickness and composition of lamella on a mesoscopic scale. Liquid-gas interfaces are, however, the building block of foam with over-whelming importance as their molecular properties easily dominate hierarchical elements on larger length scales. In order to formulate foam with specific properties, its structure must be controlled at the molecular level of a liquid-gas interface. Here, the molecular composition, molecular order and interactions such as electrostatics dominate, and thus must be addressed with molecular level probes that can provide access to both interfacial solvent and solute molecules. Specifically, mo-lecular structures of aqueous interfaces can be modified by adding different mixtures of surface active molecules such as proteins, surfactants and polyelectrolytes, and by adjusting electrolyte properties. This is achieved by varying pH, introducing ions at different ionic strengths as well as by changing viscosities. Such model systems will be characterized with nonlinear optical spectroscopy amongst other surface sensitive probes. The gained information will be used to deduce properties of structures on larger length scales such as lamella, bubbles in a bulk liquid - as a precursor of foam - and finally macroscopic foam. For each length scale, experiments will be performed to gain access to molecular buildings blocks at liquid-gas interfaces and their effects on other hierarchical elements. These experiments thus provide essential information on foam stability and bubble coalescence, they can be used to verify structure-property relationships and to advance our understanding of foam on a molecular basis.

 Publications

year authors and title journal last update
List of publications.
2016 Björn Braunschweig, Felix Schulze-Zachau, Eva Nagel, Kathrin Engelhardt, Stefan Stoyanov, Georgi Gochev, Khr. Khristov, Elena Mileva, Dotchi Exerowa, Reinhard Miller, Wolfgang Peukert
Specific effects of Ca 2+ ions and molecular structure of β-lactoglobulin interfacial layers that drive macroscopic foam stability
published pages: 5995-6004, ISSN: 1744-683X, DOI: 10.1039/C6SM00636A
Soft Matter 12/27 2019-05-29
2017 Saskia Streubel, Felix Schulze-Zachau, Eric Weißenborn, Björn Braunschweig
Ion Pairing and Adsorption of Azo Dye/C 16 TAB Surfactants at the Air–Water Interface
published pages: 27992-28000, ISSN: 1932-7447, DOI: 10.1021/acs.jpcc.7b08924
The Journal of Physical Chemistry C 121/50 2019-05-29
2017 Felix Schulze-Zachau, Björn Braunschweig
Structure of Polystyrenesulfonate/Surfactant Mixtures at Air–Water Interfaces and Their Role as Building Blocks for Macroscopic Foam
published pages: 3499-3508, ISSN: 0743-7463, DOI: 10.1021/acs.langmuir.7b00400
Langmuir 33/14 2019-05-29
2018 Marco Schnurbus, Lucas Stricker, Bart Jan Ravoo, Björn Braunschweig
Smart Air–Water Interfaces with Arylazopyrazole Surfactants and Their Role in Photoresponsive Aqueous Foam
published pages: 6028-6035, ISSN: 0743-7463, DOI: 10.1021/acs.langmuir.8b00587
Langmuir 34/21 2019-05-29

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