Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/46003
Título: | Structural coloration of chitosan-cationized cotton fabric using photonic crystals |
Autor(es): | Yavuz, Gonul Zille, Andrea Seventekin, N Souto, A. Pedro |
Palavras-chave: | Photonic Crystal Strucutral color Textile Nanosphere |
Data: | 2017 |
Resumo(s): | Conventional textile coloration is a wet process involving high levels of water and chemicals consumption and wastewater generation. However, colour in textiles can also be generated by other mechanisms such as: absorption, emission, diffraction, interference and photochromism.[1] Chromotropic effect refers to reversible colour transformation due to external chemical or physical influence.[2] Photonic crystals are an important class of chromotropic materials. Colloidal crystals with a periodicity on the scale of half the wavelength of visible light exhibit structural colours similar to natural opals due to a diffraction effects that result in the appearance of a photonic band gap that forbids propagation of certain wavelengths.[3] Structural colouration is emerging as an innovative technology to produce colourful textiles materials.[4] Various colours impossible to reproduce by chemical coloration can be created by modifying the periodicity of the nanostructures or the environmental conditions using a single material.[5, 6] Photonic crystals can be applied on textile fabrics by colloid self-assembly and the structural colours can be controlled by adjusting the microspheres size and the viewing angles.[7] However, their application for textile structural coloration has been barely reported.[8] In this work, P(St-MMA-AA) composite nanospheres were deposited onto chitosan-cationized woven cotton fabrics. The structural colours of the deposited photonic crystals on the fabrics and its washing fastness were investigated. |
Tipo: | Comunicação oral |
URI: | https://hdl.handle.net/1822/46003 |
DOI: | 10.13140/RG.2.2.27030.96324 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | DET/2C2T - Comunicações em congressos internacionais com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
AUTEX_2017_GONUL_ABSTRACT.pdf | 10,96 MB | Adobe PDF | Ver/Abrir |