Vpliv veziv na kakovost potiska in funkcionalnost bombažne tkanine z dišečimi mikrokapsulami

Šturm, Maša (author), Golja, Barbara (mentor)

Tekstilna industrija se vse pogosteje usmerja k razvoju funkcionalnih tekstilij, ki poleg estetske vrednosti nudijo uporabne lastnosti. To so na primer dišeče, protimikrobne, vodoodbojne in negorljive tekstilije. Ena izmed tehnologij za nanos funkcionalnih snovi na blago je mikrokapsuliranje, s katerim dosežemo kontrolirano, postopno sproščanje aktivne snovi in s tem dolgotrajnejšo funkcionalnost tekstilije. Za nanos mikrokapsul na blago smo v diplomskem delu uporabili postopek direktnega pigmentnega tiska. Uporabljene so bile melamin formaldehidne mikrokapsule z eteričnim oljem sivke v jedru, ki smo jih nanesli na 100 odstotno bombažno tkanino. V okviru raziskave smo pripravili tiskarske paste z enakimi koncentracijami zgostila, pigmenta in mikrokapsul ter z uporabo treh različnih vrst tržnih veziv (cradle-to-cradle, brezformaldehidno in formaldehidno). Sledil je nanos na bombažno tkanino s postopkom filmskega tiska na laboratorijskem magnetnem tiskarskem stroju. Polovico potiskanih vzorcev smo trikrat oprali. Na neopranih in opranih vzorcih smo nato analizirali mehanske lastnosti, kot sta togost in otip, ter fizikalne lastnosti, kot so zračna prepustnost, debelina in ploščinska masa. Izmerili smo tudi barvne vrednosti vzorcev in ocenili prisotnost dišave na njih. Prav tako smo določili vsebnost prostega formaldehida na vzorcih, ki so bili potiskani z dodatkom mikrokapsul in brez njih. Rezultati so pokazali, da izbira veziva nima bistvenega vpliva na mehanske in fizikalne lastnosti potiskanega blaga, njegovo funkcionalnost in obstojnost mikrokapsul na tekstilu, temveč predvsem na vsebnost prostega formaldehida, kar posledično lahko vpliva na okolje in človeka. Na podlagi ugotovitev lahko zaključimo, da izbira optimalnega veziva predstavlja kompromis med nizko vsebnostjo formaldehida in trajnostnimi lastnostmi, pri čemer je odločitev odvisna od končne uporabe tekstilije.

• Language: Slovenian
• Keywords: direktni pigmentni tisk, dišeče mikrokapsule, veziva, formaldehid, funkcionalne tekstilije.
• Work type: Bachelor thesis/paper
• Organization: NTF - Faculty of Natural Sciences and Engineering
• Year: 2026
• PID: 20.500.12556/RUL-183764
• Publication date in RUL: 18.06.2026

Secondary language

• Language: English
• Title: Influence of binders on print quality and functional properties of cotton fabric with fragrant microcapsules

Abstract

The textile industry is increasingly oriented towards the development of functional textiles, which in addition to aesthetic value provide useful properties. These are, for example, fragrant, antimicrobial, water-repellent, flame-retardant textiles, etc. One of the technologies for applying functional substances to textiles is microencapsulation, by which we achieve controlled, gradual release of the active substance and thus longer-lasting functionality of the textile. In this thesis, microcapsules were applied onto the fabric using the direct pigment printing process. Melamine-formaldehyde microcapsules with lavender essential oil in the core were used, which we applied to 100% cotton fabric. Within the research, we prepared printing pastes with equal concentrations of thickener, pigment and microcapsules, and with the use of three different types of commercial binders (cradle-to-cradle, formaldehyde-free and formaldehyde-based). This was followed by application onto cotton fabric using the film printing process on a laboratory magnetic printing machine. Half of the printed samples were washed three times. The unwashed and washed samples were then analysed for mechanical properties such as stiffness and hand feel, and physical properties such as air permeability, thickness and mass per unit area. We also measured the colour values of the samples and assessed the presence of fragrance on them. We also determined the content of free formaldehyde on the samples that were printed with the addition of microcapsules and without them. The results showed that the choice of binder does not have a significant influence on mechanical and physical properties of printed fabric, its functionality and durability of microcapsules, but primarily influences the content of free formaldehyde which in turn can affect the environment and humans. Based on the findings, we can conclude that the choice of the optimal binder represents a compromise between low formaldehyde content and sustainability properties, whereby the decision also depends on the intended use of the textile.

• Keywords: direct pigment printing, fragrant microcapsules, binders, formaldehyde, functional textiles.