Nontoxic Thermochromic Materials

Abstract

Thermochromic products have had great commercial success in the past with colour changing products, the most well-known being the American Coor’s beer can, which saw a spike in sales at its introduction. A large range of thermochromic materials and systems, such as liquid crystals, photonic crystals, gold or silver nanoparticles, leuco dye systems, polydiacetylene derivatives and aggregachromic dyes, have been developed for industrial applications. However, concerns about their safety have limited their application in the area of food packaging. Intelligent thermochromic food packaging has the potential to monitor food quality, trace thermal history and deter counterfeiting. The research pre..