20.500.12556/DKUM-67812 Določitev vzrokov porumenitve optično beljenih bombažnih pletenin Causes of optically bleached cotton knitwear yellowing Osnovni namen raziskave je bil določiti veličine, ki so vzrok za porumenitev optično beljenjih pletenin. V raziskavi so bili analizirani že obstoječi madeži na pletenini, ki je bila tovarniško beljena in konfekcionirana (IR in UV/VIS spektrometrija). Nadaljnji namen raziskave je bil zasledovanje nastanka rumenih madežev pod vplivom različnih veličin: svetlobe, klimatskih pogojev, mazalnega olja, perkloetilena in spremne embalaže. Sprememba stopnje beline je bila zasledovana spektrofotometrično. Ugotovljeno je bilo, da je verjetni vzrok nastanka rumenih madežev tovarniško beljenih materialov mazalno olje ali njegovi razgradni produkti. Laboratorijska simulacija nastankov madežev, ki je bila izvajana sedem mesecev pod vplivom različnih veličin, ni povzročila nastanka karakterističnih rumenih madežev, prišlo pa je do padca stopnje beline. Od vseh analiziranih parametrov ima na spremembe stopnje beline največji vpliv mazalno olje pod vplivom svetlobe. The main purpose of the research was to determine the parameters responsible for the yellowing of optically bleached cotton knitwear. The stains on knitwear that had been previously factory-bleached and made were investigated by IR and UV/VIS spectroscopy. Another purpose was to monitor the formation of yellow stains under the influence of various parameters: light, weather conditions, lubricating oil, perchlorethylene and packing materials. The change of the degree of whiteness was monitored spectrophotometrically. It was found that the formation of yellow stains on factory bleached materials might be attributed to lubricating oil or its degradation products. During laboratory simulation of the stain formation performed for seven months (under different parameters) no characteristic yellow stains appeared, however, the degree of whiteness lowered. Lubricating oil under the effect of light had the greatest influence on the change of the degree of whiteness among all analyzed parameters. tekstilna industrija bombaž pletenine optično beljenje porumenitev tekstilij textile industry cotton fibres knitwear optical bleaching yellowing true false true Slovenski jezik Angleški jezik Znanstveno delo 2017-08-31 10:08:02 2017-08-31 10:08:53 2022-08-01 14:28:59 2019-07-11 16:32:14 2000 0 0 str. 77-82 št. 3/4 Letn. 43 mar.-apr. 2000 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 0351-3386 677.027.27.019.17 763396 5322518 0351-3386 URN:SI:UM:DK:SATQHB4Q Tekstilec_2000_Stana-Kleinschek,_Iskrac_Dolocitev_vzrokov_porumenitve_opticno_beljenih_bombaznih_pletenin.pdf Tekstilec_2000_Stana-Kleinschek,_Iskrac_Dolocitev_vzrokov_porumenitve_opticno_beljenih_bombaznih_pletenin.pdf 1 463E7D248F88EFF428671F2B09A8E05F 812da642b7578d224a39d58ac716dcf52a59c8cddd35e39170f4c6386fd0626e 98676f30-7c0e-11eb-bb7a-00155d0001ca 20.500.12556/dkum/8b5e1bea-03fe-4ebc-addc-deb23d910817 https://dk.um.si/Dokument.php?lang=slv&id=116543 http://www.tekstilec.si/wp-content/uploads/2000/03/Causes-of-Optical-Bleached-Cotton-Knitwear-Yellowing.pdf 1 https://dk.um.si/Dokument.php?lang=slv&id=116542 Fakulteta za strojništvo 0 0 0