Abstract
P(St-MAA) and SiO2 photonic crystals on polyester fabrics were put in the different application environments such as water, oil, acid, alkali, high temperature, and ultraviolet radiation. The related changes of the morphology and the structural colors were characterized by 3D video microscope and field-emission scanning electron microscopy (FESEM) and the possible mechanisms were deeply investigated. It is found that aqueous medium have little influence on P(St-MAA) and SiO2 photonic crystals, however, oil medium restrains the photonic crystals from regaining the original structure. Even though in aqueous medium, strong acid and alkali conditions could easily destroy the photonic crystal structure to great extent even degrade the microspheres. Different from the good stability of P(St-MAA) and SiO2 photonic crystals at conventional high temperatures, under the ultraviolet irradiation P(St-MAA) are severely destroyed due to the drastic thermal depolymerization, but SiO2 photonic crystals keep favorable morphology and structural color.
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