RULA Awards 2020 for Best Researcher in Textile Technology

Sponsored by the International Research Councils, this year, Prof. Vladan Koncar, PhD, Prof. Ana Marija Grancaric, PhD and Ivona Jerkovic, PhD student are RULA Awards holders for the Researcher Leadership Award, Best Researcher in Textile Technology in 2020. These Awards have got selected for the excellence of the paper published in Journal of Fashion Technology and Textile Engineering (2018), entitled - Textile Sensors Validatıon to Perform In Situ Structural Health Monitorıng of Textile Reinforced Thermoplastic Composites.RULA (Research under Literal Access) International Research Leadership Award is intended to celebrate research excellence and to increase trans-disciplinary exposure

RULA Awards 2020 for Best Researcher in Textile Technology

Sponsored by the International Research Councils, this year, Prof. Vladan Koncar, PhD, Prof. Ana Marija Grancaric, PhD and Ivona Jerkovic, PhD student are RULA Awards holders for the Researcher Leadership Award, Best Researcher in Textile Technology in 2020. These Awards have got selected for the excellence of the paper published in Journal of Fashion Technology and Textile Engineering (2018), entitled - Textile Sensors Validatıon to Perform In Situ Structural Health Monitorıng of Textile Reinforced Thermoplastic Composites.RULA (Research under Literal Access) International Research Leadership Award is intended to celebrate research excellence and to increase trans-disciplinary exposure

International Relations Office (IRO) of the Faculty of Textile Technology

Uključenjem Hrvatske u europske intergracijske procese Sveučilište u Zagrebu je veliki dio svojih aktivnosti usmjerilo u poticanje uključenja u međunarodne programe razmjene. Stoga je sustavno uključenje znanstvenika i nastavnika, kao i ostvarenje bolonjskog procesa u visokom obrazovanju moguće ako sastavnice Sveučilišta u prvom koraku osnuju Ured za međunarodnu suradnju. Za uspostavu međunarodne suradnje vezane za bolonjski proces i izmjene znanstvenika sa srodnim institucijama u Europi na Tekstilno-tehnološkom fakultetu Sveučilišta u Zagrebu osnovan je Ured za međunarodnu suradnju (IRO - International Relations Office).By involving Croatia into European integration processes the University of Zagreb has aimed plenty of its activities at encouraging international exchange programs. Systematic inclusion of scientists and teachers and implementation of the Bologna process in higher education are possible if the organizational units of the University establish an international relations office. To establish international cooperation related to the Bologna process and scientist exchange with related institutions of Europe, the Faculty of Textile Technology founded the International Relations Office (IRO)

UV PROTECTION WITH ZEOLITE TREATED COTTON KNITTED FABRIC - THE INFLUENCE OF YARN LINEAR DENSITY

UV radiation (UV-R) can be divided into UV-A, UV-B and UV-C radiation. UV-C radiation get absorbed by atmosphere, but diminishing of the ozone layer results with the reaching of UV-B and UV-A rays on the Earths surface. Even though the UV-A rays are necessary for vitamin D synthesis, longer exposure to UV-A and UV-B rays can cause acute and chronic reactions and damages such as erythema (sunburn), sun tanning, photocarcinogenesis and photoaging, as well as known skin aging and recently the formation of skin malignant neoplasm. Garment provides some UV protection, but in most cases there are not enough its sun screening properties. This protection, among other large number of factors, highly depends on fabric surface and construction, especially for longer pending in the sun. Therefore, in last few years different protective finishes and material modification were developed. This paper deals with the influence of yarn linear density of cotton knitted fabric on its ultraviolet skin protection expressed as ultraviolet protection factor (UPF). The effects of yarn linear density on UPF using knitted fabrics from the same cotton fibers were discussed. Raw, pretreated and zeolite treated cotton fabrics were used. UV-A and UV-B transmissions were measured on transmission spectrophotometer Cary 50 Solarscreen (Varian) according to AATCC Test Method 183-2000. On the base of these values Ultraviolet protection factor (UPF) was calculated

THE FABRIC HAND OF ANTIMICROBIAL PROTECTED COTTON FABRICS USING ANTIBIOTICS AND ANTISEPTICS

Healthy and active lifestyle has led in recent years to the rapid development of antimicrobial treatment. Such antimicrobial materials provide lasting freshness and a sense of security and well-being of consumers. At first glance it seems easy to achieve antimicrobial properties, but the persistence of such treatment is a bigger problem. Application of natural zeolite nanoparticles for antimicrobial protection has shown increased activity and synergism with some antimicrobial agents, e.g. azalide. On the other hand, azalides are not acceptable from dermatological or ethics view, because of resistance development. This paper deals with the selection of optimal antimicrobial treatment which will provide protection against Gram positive (Staphylococcus aureus) and Gram negative (Klebsiella pneumoniae) bacteria, as well as fungi (Candida albicans). For this purpose, 100 % raw and bleached cotton knitted fabric was treated by exhaustion with natural zeolite nanoparticles and different antimicrobial agents cationic surfactant, azalide and antiseptic. It is well known that the cationic surfactants significantly improve fabric hand, but the high concentrations of activated zeolite getting it worse. Therefore, the influence of these treatments on fabric hand (subjective and objective evaluated) was investigated

LIGHT CONVERSION AND SCATTERING IN UV PROTECTIVE TEXTILES

The primary cause of skin cancer is believed to be a long exposure to solar ultraviolet radiation (UV-R) crossed with the amount of skin pigmentation in the population. It is believed that in childhood and adolescence 80% of UV-R gets absorbed, whilst in the remaining 20% gets absorbed later in the lifetime. This suggests that proper and early photoprotection may reduce the risk of subsequent occurrence of skin cancer. Textile and clothing are the most suitable interface between environment and human body. It can show UV protection, but in most cases it does not provide full sun screening properties. UV protection ability highly depends on large number of factors such as type of fibre, fabric surface and construction, type and concentration of dyestuff, fluorescent whitening agent (FWA), UV-B protective agents, as well as nanoparticles, if applied. Based on electronically excited state by energy of UV-R (usually 340370 nm), the molecules of FWAs show the phenomenon of fluorescence giving to white textiles high whiteness of outstanding brightness by reemitting the energy at the blue region (typically 420470 nm) of the spectrum. By absorbing UV-A radiation, optical brightened fabrics transform this radiation into blue fluorescence, which leads to better UV protection. Natural zeolites are rock-forming, microporous silicate minerals. Applied as nanoparticles to textile surface, it scatters the UV-R resulting in lower UV-A and UV-B transmission. If applied with other UV absorbing agents, e.g. FWAs, synergistic effect occurs. Silicones are inert, synthetic compounds with a variety of forms and uses. It provides a unique soft touch, is very resistant to washing and improves the property of fabric to protect against UV radiation. Therefore, the UV protective properties of cotton fabric achieved by light conversion and scattering was researched in this paper. For that purpose, the stilbene-derived FWAs were applied on cotton fabric in wide concentration range without/with the addition of natural zeolite or silicone polydimethylsiloxane. UV protection was determined in vitro through ultraviolet protection factor. Additionally, the influence to fabric whiteness and hand was researched