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Namen diplomskega dela je bil raziskati uporabnost barvila iz plodov tujerodne invazivne rastlinske vrste octovca (lat. Rhus typhina) pridobljenega z ekstrakcijami primerjalno v različnih topilih destilirani vodi, metanolu, etanolu, propanolu, acetonu, diklorometanu in acetonitrilu, za pripravo sito tiskarske barve in za tiskanje na papir in bombažno tkanino. Med eksperimentalnim delom se je vizualno spremljala barva raztopin octovca v različnih topilih, pridobljenih ekstraktov, pripravljenih tiskarskih barv in dobljenih odtisov na papirju in tkanini. Vsem odtisom je bila barva tudi barvnometrično ovrednotena. Preizkušene so bile obstojnosti odtisov na drgnjenje, odtisom na bombažni tkanini pa tudi obstojnosti na pranje in mokro likanje. Barve odtisov so variirale med svetlo rumeno-rjavimi in oranžno-rjavimi odtenki. Vsi odtisi so bili odlično obstojni na drgnjenje. Obstojnosti odtisov na bombažni tkanini na mokro drgnjenje in likanje so bile odlične, vendar slabše na pranje. Za tisk na bombažno tkanino sta se zaradi enakomernih in pralno obstojnih odtisov najbolje izkazali tiskarski barvi pripravljeni iz barvila ekstrahiranega v propanolu in diklorometanu, za tisk na papir pa tudi tiskarski barvi pripravljeni z barvilom ekstrahiranim v destilirani vodi in v etanolu. The aim of the thesis was to investigate the usefulness of the dye from the fruits of the alien invasive plant species, staghorn sumac (lat. Rhus typhina), obtained by comparative extractions in different solvents, such as distilled water, methanol, ethanol, propanol, acetone, dichloromethane, and acetonitrile, for the preparation of screen-printing ink and for printing on paper and cotton fabric. During the experimental work, the colour of solutions of staghorn sumac in various solvents, obtained extracts, prepared printing inks, and obtained prints on paper and fabric was visually monitored. Additionally, the colour of all prints was colorimetrically evaluated. The resistance of the prints to rubbing, as well as the resistance to washing and wet ironing of prints on cotton fabric, were tested. The colours of the prints varied between light yellow-brown and orange-brown shades. All prints had excellent resistance to rubbing. The fastness of prints on cotton fabric to wet rubbing and ironing was excellent, but worse to washing. Printing inks prepared from dyes extracted in propanol and dichloromethane proved to be the best for printing on cotton fabric due to uniform and washing-resistant prints, and for printing on paper also printing inks prepared with dyes extracted in distilled water and ethanol. |
