Materials that Change Color

Abstract

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Photochromic Nanofibers

“…Photochromic compounds are widely used not only in optics but also in areas such as plastics, cosmetics, inks, and textiles [27]. The use of these compounds in textile field is problematic due to their poor affinity to the material, low solubility in water, sensitivity to high temperature, etc.…”

Screen Printing of Cotton Fabric with Hydrochromic Paste: Evaluation of Color Uniformity, Reversibility and Fastness Properties

“…Chromic substrates are those that change their visual properties, reflecting different colors due to its induction by external stimuli (Chowdhury, Joshi, and Butola 2014). They are also described as "chameleon" materials, due to its changes according to the place conditions or induced stimuli (Ferrara and Bengisu 2014). The classification of the color change phenomenon is shown in Table 1, correlating each phenomenon to its respective stimulus.…”

“…They form a category of a most embracing group called "solvatochromic," which changes its own properties by being sensitive to a certain solvent (liquid or gas), related to its polarity. Therefore, solvatochromism is a color change brought about by a change in solvent polarity (Ferrara and Bengisu 2014).…”

“…Examples of materials that can be used: soft sheet vinyl, paper, coated paper, styrene sheet, among others. The techniques used to apply the hydrochromic are screen printing or spray coating, followed by passing it through a forced hot air tunnel (Ferrara and Bengisu 2014). Specifically, in textile substrates, studies using hydrochromic materials were printed onto polyester, cotton, polyamide and blended; elastane and polyester (Ferrara and Bengisu 2014;Toffanetti 2019).…”

“…The techniques used to apply the hydrochromic are screen printing or spray coating, followed by passing it through a forced hot air tunnel (Ferrara and Bengisu 2014). Specifically, in textile substrates, studies using hydrochromic materials were printed onto polyester, cotton, polyamide and blended; elastane and polyester (Ferrara and Bengisu 2014;Toffanetti 2019). However, the study of the reversibility using different liquids, the washing and rubbing fastness were not presented in the literature aforementioned.…”