The influence of chemical reaction conditions upon poly(styrene-methyl methacrylate-crylic acid) synthesis : Variations in nanoparticle size, colour and deposition methods / Rui D. V. Fernandes in COLORATION TECHNOLOGY, Vol. 136, N° 2 (04/2020)

[article]  inCOLORATION TECHNOLOGY > Vol. 136, N° 2 (04/2020) . - p. 101-109 Titre : The influence of chemical reaction conditions upon poly(styrene-methyl methacrylate-crylic acid) synthesis : Variations in nanoparticle size, colour and deposition methods Type de document : texte imprimé Auteurs : Rui D. V. Fernandes, Auteur ; Pedro Gomes, Auteur ; Andrea Zille, Auteur ; Antonio Pedro Souto, Auteur Année de publication : 2020 Article en page(s) : p. 101-109 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chimie textile Copolymère styrène-méthacrylate de méthyle-acide crylique Copolymères -- Synthèse Latex Lumière -- Diffusion Polyamide 66 Polymérisation en émulsion Potentiel zeta Réactions chimiques Textiles et tissus Index. décimale : 667.3 Teinture et impression des tissus Résumé : Monodisperse latex nanospheres of poly(styrene-methyl methacrylate-acrylic acid) with different sizes were synthetised by soap-free emulsion copolymerisation and applied onto polyamide 6,6 fabrics by two methods, ie, gravitational sedimentation and dip-drawing. Different-sized nanospheres were synthetised by varying temperature and stirring velocity as reaction parameters. Scanning electron microscopy and scanning transmission electron microscopy were used to evaluate nanosphere sizes and deposition structures. The results showed two different nanosphere structural arrangements on the fabric surface, a hexagonal packed centre structure in the even surfaces and a square arrangement in the out-of-plane surfaces. Different colours were observed according to particle size, namely, violet (ca . 170 nm), blue (ca . 190 nm), green (ca . 210 nm), yellow (ca . 230 nm) and red (ca . 250 nm). An iridescence effect was also observed, displaying different colours at different observation angles. By controlling the size of the nanospheres it was possible to obtain different, brilliant and iridescent colours. Using different nanosphere sizes it was possible to obtain different interplanar distances and to control the light scattering in the crystalline lattice planes, obtaining Bragg diffraction patterns. Note de contenu : - Materials - Preparation of monodisperse P(St-MMA-AA) composite nanospheres - Fourier Transform-infrared spectroscopy with attenuated total reflectance - Dynamic light scattering and zeta potential measurements - Deposition of PCs by the dip-drawing method - Scanning electron microscopy and scanning transmission microscopy - Optical microscopy - Diffuse reflectance spectroscopy - Glossmeter analysis - Photographs DOI : https://doi.org/10.1111/cote.12452 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34229 [article]

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