Microencapsulation is the process of creating small spheres which contain droplets of an internal phase and due to its versatility can be used to provide a stable method of packaging and protecting many materials including liquid crystal and leuco dye products. These spheres can range from sub-micron to ~1mm in size depending on the process they are to be used in.
The process is normally performed in a water phase which gives slurries of capsules suspended in water. This water can be evaporated off using processes such as spray drying to give a powder which can be used in other non-aqueous systems and can even be added to plastics in some cases.
The benefits of microencapsulation
Microcapsules provide a scientific solution for containing Thermochromatic materials offering:– .
- Protection Reducing the effect of outside influences and preventing degradation of the Thermochromics.
- Versatility Allowing Thermochromics to be used in systems normally out of reach and allowing them to be mixed together to form multiple colour plays.
- Durable packaging Holding the Thermochromic materials safely and inhibiting crystallization and preventing leaking of these oily substances into the final product.
Download the handbook on Thermochromic Liquid Crystal Technology for free for more information.