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Vpliv dodatka različnih pigmentov in barvila na fotoobarvanje bombažne tkanine, potiskane z mikrokapsulami fotokromnega barvila
Hozić, Nadia (Author), Kert, Mateja (Mentor) More about this mentor... This link opens in a new window

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Abstract
V diplomskem delu je bil preučevan vpliv dodatka klasičnega pigmenta (KP), fosforescenčnega pigmenta (FS) in mikrokapsuliranega termokromnega barvila (TK) na fotoobarvanje bombažne tkanine, potiskane z mikrokapsulami fotokromnega barvila (FC). V raziskavi je bilo pripravljenih sedem tiskarskih past različnih sestav. Tiskarske paste so bile nanesene na 100% bombažno tkanino s tehniko ploskega filmskega tiska. Potiskanim vzorcem so bile izmerjene mehansko-fizikalne lastnosti, barva ter barvne obstojnosti na pranje in svetlobo. Te so bile spektrofotometrično ovrednotene. Potiskanim tkaninam so se povečali debelina, ploščinska masa, togost, pretržna sila in pretržni raztezek, medtem ko se je zračna prepustnost znižala za več kot tretjino v primerjavi z nepotiskano tkanino. Dodatek KP, FS ali TK v tiskarsko pasto, ki je že vsebovala FC, je zmanjšal fotoodzivost tekstilije, med katerimi je imel KP najmanjši vpliv, TK pa največji. Z naraščanjem števila ciklov drgnjenja se je zmanjšalo fotoobarvanje tkanine. Na to je imel najmanjši vpliv dodatek KP, največji pa dodatek TK. Z naraščajočim številom ciklov pranja se je zmanjševala barvna obstojnost potiskanih tkanin na pranje. Dodatek kateregakoli pigmenta ali barvila v tiskarsko pasto, ki že vsebuje FC, poslabša barvno obstojnost tkanin, potiskanih z mikrokapsulami fotokromnega barvila, na pranje. S podaljševanjem časa osvetljevanja vzorcev v aparatu Xenotest se je zmanjšala barvna obstojnost vzorcev na svetlobi. Dodatek KP, FS ali TK v tiskarsko pasto, ki že vsebuje FC, rahlo izboljša barvno obstojnost bombažne tkanine, potiskane s FC na svetlobi.

Language:Slovenian
Keywords:fotoobarvanje, bombaz&#780, ploski filmski tisk, mikrokapsulirano fotokromno barvilo, klasic&#780, ni pigment, fosforescentni pigment, mikrokapsulirano termokromno barvilo
Work type:Bachelor thesis/paper (mb11)
Organization:NTF - Faculty of Natural Sciences and Engineering
Year:2017
Views:603
Downloads:284
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Secondary language

Language:English
Title:The influence of the addition of different pigments and dye on the photocoloration of cotton fabric, printed with microcapsules of photochromic dye
Abstract:
The objective of this diploma thesis was to observe the influence of adding conventional pigment (KP), phosphorescent pigment (FS) and microencapsulated thermochromic dye (TK) on the photocolouration of cotton fabric printed with microencapsulated photochromic dye (FC). Seven printing pastes of different compositions were prepared. The printing pastes were applied to a 100% cotton fabric by a flat screen printing process. The printed samples undergone measurements of mechanical and physical properties, colour and colour fastness to washing and light. The colour of the samples was spectrophotometrically evaluated. Values of thickness, mass per surface area, stiffness, breaking strength and elongation increased on all printed samples, whilst values of air permeability decreased by one third compared to unprinted fabric. The addition of KP, FS or TK into the printing paste, which already contained FC, reduced the photocolouration of the fabric. Moreover, KP had the lowest and TK the highest influence on the fabric photocolouration. With the increase of rubbing cycles, the photocolouration of the printed samples worsened. The biggest influence was observed with the addition of KP and the lowest with the addition of TK. With the increase of laundering cycles the colour fastness of the printed fabric decreased. The addition of any kind of colourant into the printing paste which already containing FC worsened the colour fastness to washing of the fabric printed with microencapsulated photochromic dye. Prolonging the time of illumination of the samples in the Xenotest apparatus decreases the colour fastness of the samples to light. The addition of KP, FS or TK into the printing paste, which already contains FC, slightly improves the colour fastness to light of the cotton fabric printed with FC.

Keywords:photocolouration, cotton, flat screen print, microencapsulated photochromic dye, pigment, phosphorescent pigment, microencapsulated thermochromic dye

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