Molecular release from painted surfaces: Free and encapsulated biocides
Journal article, 2010

The current standard way of using biocide in coatings for protection against micro-organic surface growth, so called biofouling, is insufficient as the biocide leaks out from the coating too fast. In this article, we investigate a method for prolongation of the coating protection by slowing down the release rate of biocides in a controlled way. The biocide is placed into micrometer-sized reservoirs, called microspheres, from where it is slowly distributed into the coating. By different microscopic techniques the microspheres were found to be compatible (i.e. no phase separation was observed) both with the coating material and the paint. Biocide release from the coating is recorded by liquid scintillation counting and it was clear that the release is considerably slower from coatings with microspheres compared to an ordinary formulation with freely dispersed biocides. Microspheres might thus be a beneficial tool for the development of coatings with a longer protection against biofouling. (C) 2010 Elsevier B.V. All rights reserved.

coatings

Microcapsules

adsorption

Controlled release

Microspheres

Paint

Author

Lars Nordstierna

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

Attaalla A M Abdalla

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

Mariam Masuda

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

Gunnar Skarnemark

Chalmers, Chemical and Biological Engineering, Nuclear Chemistry

Magnus Nydén

SuMo Biomaterials

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

Progress in Organic Coatings

0300-9440 (ISSN)

Vol. 69 1 45-48

Subject Categories

Chemical Sciences

DOI

10.1016/j.porgcoat.2010.05.002

More information

Latest update

8/18/2020