(UM)
  • Photochromic textile grafted by ethylcellulose-spirooxazine nanocapsules [Elektronski vir]
    Feczkó, Tivadar ; Vončina, Bojana
    Photochromism is the phenomenon whereby the absorption spectrum of a molecule or crystal changes reversibly when the sample is irradiated by UV or visible light. The use of photochromism provides new ... opportunities to develop smart textiles. In this work 5-Chloro-1,3-dihydro-1,3,3-trimethylspiro[2H-indole-2,3 -(3H)naphth[2,1-b](1,4)oxazine] photochromic dye was encapsulated by eco-friendly ethylcellulose into nanocapsules, and they were grafted to textile. The preparation of durable nanocapsules for textile finishing compositions was performed based on an oil-in-water emulsion process. The size of the capsules determined by dynamic light scattering method was optimized (216 nm, volume mean diameter) by varying the encapsulating polymer concentration. The photochromic property of nanocapsules, proportional to the dye concentration, was certified by UV/VIS spectrophotometry. 1,2,3,4-butanetetracarboxilic acid and citric acid were used as crosslinking agents in binding nanocapsules to textile. The grafting of nanoparticles to textile was investigated by FTIR spectroscopy. The main advantage of this method was the use of biocompatible encapsulating polymer and non-toxic crosslinking agents.
    Vir: Congress proceedings [Elektronski vir] (7 f.)
    Vrsta gradiva - prispevek na konferenci ; neleposlovje za odrasle
    Leto - 2010
    Jezik - angleški
    COBISS.SI-ID - 14278934

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