Photopolymerizable Monomer Miniemulsions: Why Does Droplet Size Matter?
Florent Jasinski
Laboratory of Photochemistry and Macromolecular Engineering, ENSCMu, University of Haute-Alsace, 3 Rue Alfred Werner, 68093 Mulhouse Cedex, France
Search for more papers by this authorEmeline Lobry
Laboratory of Photochemistry and Macromolecular Engineering, ENSCMu, University of Haute-Alsace, 3 Rue Alfred Werner, 68093 Mulhouse Cedex, France
Search for more papers by this authorCorresponding Author
Abraham Chemtob
Laboratory of Photochemistry and Macromolecular Engineering, ENSCMu, University of Haute-Alsace, 3 Rue Alfred Werner, 68093 Mulhouse Cedex, France
Laboratory of Photochemistry and Macromolecular Engineering, ENSCMu, University of Haute-Alsace, 3 Rue Alfred Werner, 68093 Mulhouse Cedex, France.Search for more papers by this authorCéline Croutxé-Barghorn
Laboratory of Photochemistry and Macromolecular Engineering, ENSCMu, University of Haute-Alsace, 3 Rue Alfred Werner, 68093 Mulhouse Cedex, France
Search for more papers by this authorAdrien Criqui
Mäder Research - MÄDER GROUP, 130 Rue de la Mer Rouge, 68200 Mulhouse, France
Search for more papers by this authorFlorent Jasinski
Laboratory of Photochemistry and Macromolecular Engineering, ENSCMu, University of Haute-Alsace, 3 Rue Alfred Werner, 68093 Mulhouse Cedex, France
Search for more papers by this authorEmeline Lobry
Laboratory of Photochemistry and Macromolecular Engineering, ENSCMu, University of Haute-Alsace, 3 Rue Alfred Werner, 68093 Mulhouse Cedex, France
Search for more papers by this authorCorresponding Author
Abraham Chemtob
Laboratory of Photochemistry and Macromolecular Engineering, ENSCMu, University of Haute-Alsace, 3 Rue Alfred Werner, 68093 Mulhouse Cedex, France
Laboratory of Photochemistry and Macromolecular Engineering, ENSCMu, University of Haute-Alsace, 3 Rue Alfred Werner, 68093 Mulhouse Cedex, France.Search for more papers by this authorCéline Croutxé-Barghorn
Laboratory of Photochemistry and Macromolecular Engineering, ENSCMu, University of Haute-Alsace, 3 Rue Alfred Werner, 68093 Mulhouse Cedex, France
Search for more papers by this authorAdrien Criqui
Mäder Research - MÄDER GROUP, 130 Rue de la Mer Rouge, 68200 Mulhouse, France
Search for more papers by this authorAbstract
In monomer miniemulsions, droplet size is a key parameter impacting the optical properties, and consequently their photopolymerizability under UV light. Three simple spectrophotometric methodologies are developed, based on an integrating sphere, to evaluate precisely the effect of droplet size on radiation absorption and scattering, which both contribute to light attenuation. Using a series of diluted acrylate monomer miniemulsions ranging from 40 to 300 nm, all the methods converge toward a constant absorption coefficient, comparable with that in solution. In contrast, a droplet-size decrease causes a significant and progressive reduction of the scattering coefficient, with a positive effect on light penetration.
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