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Chromogenic Polymers - Materials with controllable optical properties

Poster presented at Fachtagung Innovative Oberflächen, 18. und 19.09.2019, Lüdenscheid
Chormogene Polymere - Materialien mit steuerbaren optischen Eigenschaften
: Rabe, Christian; Wagner, J.; Ruhmann, R.; Föllmer, M.; Eberhardt, V.

Poster urn:nbn:de:0011-n-5697727 (1.1 MByte PDF)
MD5 Fingerprint: eca9a83576a6c7ca5c1d29dbf50a23c8
Created on: 10.1.2020

2019, 1 Folie
Fachtagung Innovative Oberflächen <2019, Lüdenscheid>
Poster, Electronic Publication
Fraunhofer IAP ()
Thermochromie; Thermotropie; Elektrochromie; Piezochromie; Kunststoff

By external stimulation with light, temperature, mechanical forces, or electric potential, chromogenic materials change their color. That class of materials might also exhibit a deepening or fading of the color or show transitions between a transparent and a scattering or a reflective state. This is due to a stimulated change of the optical properties of these materials. It results in a change of the absorption or reflection spectrum or in a change of the scattering or reflection properties. Chromogenic materials usually are sensitive to only one specific stimulus thus defining several subclasses, such as thermochromic, photochromic, mechanochromic, and electrochromic materials. The thermochromic systems that are generated using a function-by-design strategy gain increasing importance. This strategy is based on a physical or chemical interaction of non-intrinsic thermochromic components. The wide application potential of chromogenic materials is illustrated on selected examples, such as packaging films with intrinsic temperature-controlled sensor properties (smart packaging), adaptive sun protection systems, electrochromic panes, or pressure sensitive coatings.