http___www.ts-rc.eu_index.php_option_com_content_view_article_id_231_Itemid_86_lang_hr_1.xml
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Title: Measurement of Changes in the Surface Free Energy of Enzyme Treated Textiles Project type: Bilateral projects with United Kingdom Croatian coordinator: Prof. Ana Marija Grancarić, PhD UK coordinator: David Bishop Project Summary: One of the goals of European projects in the field of textiles is economically justified eco textiles, and maximum utilization of fiber. European textile design department at the University De Montfort University in Leicester investigated flax fibers, yarns and fabrics, the products of short and medium long flax fibers in blends with wool and polyester. Ecological processes in this project have already been applied in the process of obtaining linseed fibers of flax plants using enzyme retting of flax. After the addition of pectinase were used for boiling the intention of replacing the environmentally unfavorable NaOH. Methods of classical boiling linseed material in the bath with NaOH already been thoroughly worked out with the effects of high hydrophobicity. This is especially important because the chemical composition of flax fibers with a smaller share of pulp and other additives in the distribution compared to cotton. The research application of enzymes in the boiling of flax yarn and blends with polyester and wool, of paramount importance are the effects of hydrophobicity, in addition to the degree of whiteness, receiving color, strength and more. Share our work in this project is included in the study of the surface free energy, hydrophobicity and enzymatic boiled a mixture of flax yarn/wool and linen/polyester. Free surface energy was calculated by measuring penetration of two polar solvents, water and formamide and a unpolare solvent, n-heptane. Applied the modified method by using Chibowski Washborn's equation for the speed of penetration of liquids in capillary systems of vital statistics as they considered the structure of textile materials.
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Naslov projekta: Mjerenje promjena slobodne površinske energije enzimatski obrađenog tekstila Vrsta projekta: Bilateralni projekti s Velikom Britanijom Hrvatski voditelj: Prof. dr. sc. Ana Marija Grancarić Britanski voditelj: David Bishop Sažetak projekta: Jedan od ciljeva Europskih projekata iz područja tekstila je ekonomski opravdan ekološki tekstil, te maksimalno iskorištenje vlakana. Europski projekt tekstilnog odjela Sveučilišta De Montfort University iz Leicestera istražuje laneno vlakno, pređu i plošne proizvode, proizvode iz kratkih i srednje dugih lanenih vlakana u mješavinama s vunom i poliesterom. Ekološki postupci u ovom projektu već su primjenjeni u samom postupku dobivanju lananog vlakna iz biljke lana primjenom enzima u močenju lana. Nakon toga enzimi pektinaze su upotrebljeni za iskuhavanje u namjeri zamjene za ekološki nepovoljnu NaOH. Postupci klasičnog iskuhavanja lanenog materijala u kupeljima s NaOH već odavno su temeljito razrađeni s visokim efektima hidrofilnosti. Ovo je poglavito važno zbog kemijskog sastava lanenog vlakna s manjim udjelom celuloze i druge raspodjele primjesa u odnosu na pamuk. U istraživanjima primjene enzima u iskuhavanju lanene pređe, te mješavina s poliesterom i vunom, od najveće važnosti su efekti hidrofilnosti, pored stupnja bjeline, primanja bojila, čvrstoće i drugog. Udio našeg rada u ovom projektu sadržan je u istraživanjima slobodne površinske energije, te hidrofilnosti enzimatski iskuhane pređe iz mješavina lan/vuna i lan/poliester. Slobodna površinska energija izračunata je metodom mjerenja penetracije dva polarna otapala, vode i formamida i jednog nepolarnog otapala, n-heptana. Primjenjena je modificirana metoda po Chibowskom koja koristi Washborn-ovu jednadžbu za brzinu prodora tekućine u kapilarne sustave kakvima se moge smatrati strukture tekstilnih materijala.