Design and fabrication of thermochromic and fluorscent smart paper fordevelopment of anticounterfeiting labels

The counterfeiting of different products has significantly increased, posing a challenge for customersto distinguish genuine products. Consequently, the development of dual-responsive labels isconsidered a promising solution to this issue. In this study, thermochromic fluorescent nanocapsuleswere synthesized via miniemulsion polymerization and utilized in the fabrication of a novel smartpaper. Field-emission scanning electron microscopy showed the spherical morphology of theprepared nanocapsules. Solid-state Ultraviolet-visible spectroscopy confirmed the thermochromicproperties of the nanocapsules, demonstrating an absorption peak at λmax=۶۰۷ nm at −۱۰ °C, whichdisappears by increasing temperature to ۲۶ °C, making the prepared smart paper an effective anticounterfeitinglabel.

کلیدواژه ها:

Smart polymers ، Thermochromism ، Anti-counterfeiting labels ، Polymer nanocapsules