Development of novel PHOTOluminescent PROducts, Photopro, E!7827
| Reference number | |
| Coordinator | SP SVERIGES TEKNISKA FORSKNINGSINSTITUT AB - Kemi, material och ytor, Stockholm |
| Funding from Vinnova | SEK 562 919 |
| Project duration | October 2013 - September 2015 |
| Status | Completed |
Purpose and goal
The aim of the project was to develop a method for encapsulation of a photoluminiscent pigment. The process should be scaled up to pilot scale (kilogram level) and the pigment delivered to partners for evaluation in paint and ink applications. The encapsulated pigment reached the light properties given in standards. The light durability of the encapsulated pigment was substantially improved compared to unmodified commercial pigment when provoking degradation by light and water.
Results and expected effects
The Project reached all goals. In order for the process to become commercial must the robustness in all aspects of the process be verified first at pilot scale and then on full scale.
Approach and implementation
The approach given in the Project plan was to encapsulate the pigment with spray drying and in the project plan optimal particle size was given. Unfortunately had the best commercial pigment larger particle size. Hence the particles were grind down Before being spray dried. The encapsulation process worked but the light properties was destoryed. The encapsulation approach was changed and the light properties was improved with 50 % compared to the commercial pigment and the lightfastness was also improved substantially. The process was scaled up and all goals reached.