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Colour transformation in thermochromic materials comes true with the phase transition in the material due to temperature amendments. By using thermochromic fibres, capsules, colourants, or pigments that respond to heat stimulus in various materials, these materials can be given functional properties. Studies on this subject in the literature are generally related to gaining thermochromic properties to main materials such as glass, concrete, asphalt, and wood. Other studies are related to the production of fibres with thermochromic properties and their use in thermochromic fabrics. In this study, the methods used in the progress of intelligent materials were examined. Developments in innovative, smart thermochromic fabrics were assessed. Despite technological progress, much research still needs to be done on textile practices of thermochromic materials.

Bu çalışmada, kaplama yapmak için ticari olarak temin edilebilen ve 33°C'nin üzerinde yeşilden beyaza, 45°C'nin üzerinde siyahtan beyaza ve 65°C'nin üzerinde maviden beyaza renk değiştiren termokromik pigmentler kullanılmıştır. Farklı sıcaklıklarda ısıl işlem süreci uygulanan kaplamalarda bağlayıcı olarak polivinilpirolidon kullanılmıştır. Hazırlanan kaplamaların renk, faz, mikroyapı analizleri yapılmış, renk değişim sıcaklıkları kızılötesi termometre ve kızılötesi termal kamera ile karakterize edilmiştir. Yapılan çalışmalar sonucunda, günlük hayatta yaşanılan olası sıcaklık değişimlerinin ve risklerin yaşam konforunu değiştirmeden bu yöntem ile tespit edilebileceği ortaya konulmuştur.

In this study, bioactive glass powders were successfully synthesized by using the sol-gel process and bioactive glass powders were tabletted by direct dry pressing method. The morphology and surface properties of bioactive glass tablets were examined via field emission scanning electron microscope (FE-SEM) devices. X-ray diffraction (XRD) was utilized to evaluate the phases formed in the sol-gel bioactive glass tablets. Surface characterization of the tablets immersed in simulated body fluid (SBF) was carried out with XRD, FE-SEM, and Fourier transform infrared (FTIR). XRD, FTIR, and EDS analysis proved that the sample contained hydroxyapatite. Also, the in vitro mineralization assay demonstrated that bioactive glass tablets are capable of inducing the creation of hydroxyapatite after dipped in SBF. All analyze results showed that bioactive glass tablets have good apatite-forming activity.

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