Naslov
Behaviour of nitrospirobenzopyran photchromic dye in solvents and on PA fibre

Autori
Đurašević Vedran ; Osterman-Parac, Đurđica ; Sutlović Ana

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the XXII IFATCC International Congress ; From Textile Chemistry to Fashion: Multifunctionality, Sustainability, Competivity / - , 2010

ISBN
9788896679005

Skup
XXII IFATCC International Congress ; From Textile Chemistry to Fashion: Multifunctionality, Sustainability, Competivity

Mjesto i datum
Stresa, Italija, 05.05.2010. - 07.05.2010

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
photochromic dye; nitrospirobenzopyran; UV; dyeing; PA

Sažetak
Behavior of photochromic 1′, 3′-Dihydro-8-methoxy-1′, 3′, 3′-trimethyl-6-nitrospiro[2H-1-benzopyran-2, 2′-(2H)-indole] dye under influence of solvents of different polarity was investigated (ethylacetate, acetone). Solutions of different dye concentrations were exposed to UV-A, UV-B and combined UV-A/UV-B source of light in order to determine behaviour of prepared solutions to different irradiation wavelengths. Based on spectrophotometrical measurement solution exhibiting greatest absorbance differences between irradiated by UV and visible light were used to dye PA substrate. PA textile substrates were dyed according to the process of exhaustion dyeing for disperse dyestuff. Dyeing was carried out from dyebaths prepared by dissolving the dye in acetone or ethyl acetate with the addition of dispersing agents. Spectral values of dyed samples were gathered on remission spectrophotometer considering the influence of exposure time to source of UV light (UV-A). Obtained K/S values were in correlation to concentration of examined nitrospirobenzopyran dye and time in which the color change caused by an UV light source persists on material upon removal of the light source.

Izvorni jezik
Engleski

Znanstvena područja
Tekstilna tehnologija

POVEZANOST RADA