20.500.12556/RUL-176813 Digital printing knitted fabrics made of polyamide, cotton and blends thereof Digitalni tisk poliamida in mešanic bombaž-poliamid Knitted fabrics with different compositions, i.e. 100% cotton (CO), 100% polyamide (PA), and a blend of 50% cotton and 50% polyamide (CO/PA), were digitally printed with reactive dyes. The cotton fabric was pretreated with a conventional alkaline solution of alginate thickener, sodium carbonate and urea. The polyamide fabric was pretreated with an acidic solution of galactomannan thickener. The CO/PA blend was pretreated once with the alginate and once with the galactomannan preparation. The aim of the study was to determine whether the proposed preparation is suitable for printing polyamide with reactive dyes and which preparation is more suit-able for printing the cotton-polyamide blend. The CIE L*a*b* colour values, the colour depth (K/S) and the dye penetration of the printed samples were compared. It was determined that under the same printing conditions, the highest colour depth was achieved on cotton, while a lower depth was recorded on polyamide. The colour depth on the cotton-polyamide blend was lower than on the two pure fabrics. For some colours, the colour depth was higher with the alginate thickener preparation, for others with the galactomannan thickener, so that no definitive preference for one preparation over the other can be given for printing blends. The colour fastness of the prints to dry rubbing (crock test), light and washing at 40 °C was acceptable for all samples. Pletivo z različno surovinsko sestavo: 100-odstotni bombaž (CO), 100-odstotni poliamid (PA) in mešanica 50 % bombaža in 50 % poliamida (CO/PA) je bilo digitalno tiskano z reaktivnimi barvili. Bombažno blago je bilo pred tiskanjem impregnirano z alkalno raztopino alginatnega zgostila, natrijevega karbonata in sečnine. Poliamidno blago je bilo impregnirano s kislo raztopino galaktomananskega zgostila. Mešanica CO/PA je bila impregnirana ali z alginatno ali z galaktomanansko apreturo. Namen raziskave je bil ugotoviti, ali je predlagana apretura primerna za digitalno tiskanje poliamida z reaktivnimi barvili in katera apretura je bolj primerna za tiskanje mešanice iz bombaža in poliamida. Na vzorcih, potiskanih s cian, magenta, rumeno in črno, so bili izmerjeni CIE L*a*b* barvne vrednosti, globina barvnih tonov (K/S) in pretisk barvila na hrbtno stran blaga. Ugotovljeno je bilo, da se pri istih pogojih tiskanja dosežejo najvišje K/S vrednosti na bombažu in nižje na poliamidu. Globina barve na mešanicah je bila nižja kot na obeh čistih pletivih. Za nekatere barve so bile K/S-vrednosti višje ob impregnaciji z alginatnim zgostilom, za nekatere z galaktomananskim zgostilom, tako da za nobeno apreturo ne moremo reči, da je primernejša za tiskanje mešanic bombaž/poliamid. Barvne obstojnosti tiskov na suho drgnjenje (crock test), svetlobo in pranje pri 40 °C so bile ustrezne pri vseh vzorcih. digital printing reactive dyes polyamide cotton preparations digitalni tisk reaktivna barvila poliamid bombaž mešanica impregnacija true false true Angleški jezik Slovenski jezik Članek v reviji 2025-12-11 09:23:37 2025-12-22 10:14:30 2025-12-24 03:58:20 0000-00-00 00:00:00 2025 0 0 Str. 4–13 no. 1 Vol. 68 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 677 0351-3386 10.14502/tekstilec.68.2024077 221326851 01-DOI_10.14502_tekstilec.68.2024077_4-13.pdf 01-DOI_10.14502_tekstilec.68.2024077_4-13.pdf 1 AD7908570E768CD4068CA6860D1E2CA1 3ed20d77d8ef1839594a5471b1e1e6317c941091229b8d8a611222c02528947a 6adaf96c-df16-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=224359 https://journals.uni-lj.si/tekstilec/article/view/19114 1 2d49c039-df16-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=224358 Naravoslovnotehniška fakulteta Tekstilec 0 0 0