Textile Functionalisation by Printing Fragrant, Antimicrobial and Flame- Retardant Microcapsules

Abstract

The procedure of applying microcapsules to a cotton fabric using screen printing was investigated. The aim was to explore whether the printing of microcapsules might be a universal approach to functionalise textiles. Fragrant (lavender, rosemary and sage essential oil core), antimicrobial (triclosan core) and fl ame-retardant (triphenyl phosphate core) microcapsules with a melamine-formaldehyde wall were used. The optimal concentration of microcapsules in the printing paste to achieve the desired eff ect was investigated. The mechanical properties of the treated fabrics were analysed before and after the washing. The results showed that diff erent functionalities of fabrics can be achieved using this printing technique. The optimal concentration of microcapsules to produce the desired fragrant or antibacterial textile product was 100 g of suspension (32 g of microcapsules) per kg of fabric. The optimal concentration of microcapsules to produce the desired fi re-retardant material was very high and could not be achieved using the pigment system.

Application of Fragrance Microcapsules onto Cotton Fabric after Treatment with Oxygen and Nitrogen Plasma

“…A chemically bleached 100% cotton fabric from the manufacturer Tekstina d.d., Ajdovščina, Slovenia, was used for the study (plain weave, mass 125 g/m 2 , warp density 50 threads/cm, weft density 30 threads/cm). Suspension of 2-8 µm sized microcapsules with a pressure-sensitive melamine-formaldehyde wall and a liquid core were prepared at Aero d.d., Celje, Slovenia, by in situ polymerization of melamine-formaldehyde prepolymers [35]. The mass fraction of cores in all microcapsules was 75% and the mass fraction of walls was 25%.…”

Nanofibers functionalized with surfactants to Eliminate SARS-CoV-2 and other airborne pathogens

“…To avoid side effects is recommended the usage of more natural compounds (EMAM, 2019). Many organic compounds are viable to confer biocidal action to textiles, such as Essential oils (ALONSO et al, 2010;GONÇALVES et al, 2020;PYANKOV et al, 2012), cyclodextrins (LI et al, 2014, triclosan (GOLJA et al, 2016;ORHAN et al, 2007), chitosan (FERNANDEZ-SAIZ et al, 2009;LI;ZHUANG, 2020), and surfactants such as sodium dodecyl sulfate (SOUSA et al, 2019) and cetyltrimethylammonium bromide (RAMESH et al, 2003;SIMÕES et al, 2008). The applications and mechanisms of surfactants as biocide agents are explored in the next section.…”

Microencapsulation for Functional Textile Coatings with Emphasis on Biodegradability—A Systematic Review

“…To achieve better process control and improved mechanical properties of the microcapsules, emulsifiers/modifiers must be added to initially improve emulsification and later ensure that polymerization develops only on the surface of the emulsified microcapsule cores and not throughout the whole aqueous phase [109]. Examples of such emulsifiers/modifiers include styrene-maleic anhydride polymer [43,48,100,109] and polyacrylic acid [96].…”

“…• printing techniques, such as screen-, photographic-, electrostatic-, pressure-transfer, thermal-transfer and inkjet printing [26,96,101,151];…”