Analysing the coatings containing the capsules and graphite, SEM images show ca. 2 µm capsules were well dispersed throughout the coating with graphite flakes also equally dispersed (Figure ). After being heated to 40 °C for 24 h, the SEM image show the coating and capsules remain intact with no obvious damage to the capsules (Figure ). DSC measurements show the coating has an enthalpy of 100 J•g -1 which decreases only by 2% after 100 cycles highlighting the durability of the coating (figure ).