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The release control device and coat are widely used in a wide variety of applications. In a new study, scientists focused on the application of anti-fouling coatings by adding active agents to polymer coatings.
developed quantitative models for four distinct methods of dispersing active agents in coatings
. The release rates predicted from these models were compared to reveal the inherent differences in the time-dependent release rate curves that can be achieved from these types of coatings.
A microcapsule-based coating with a relatively constant release rate
most of these four coatings (whole, dispersed particles and reservoir membranes) release the active agent at a significant rate of change over the active agent's active life, while a microcapsule-based coating has the potential to produce a relatively constant release rate. Although these models have potentially great value, they need to quantify many parameters, especially the diffusion coefficient of active agents through polymers. The researchers showed how to quantify these parameters by simply measuring the release rate of experimental coatings.
the study was published in the Journal of Coating Technology and Research, July 2019, volume 16, issue 4, pp. 1193-1200.
