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En studie om regenererade cellulosafibrer som ett alternativ till bomull i trikåmaterial
University of Borås, Faculty of Textiles, Engineering and Business.
University of Borås, Faculty of Textiles, Engineering and Business.
2019 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Sustainable development
Sustainable Development/Sustainability is used as a subject keyword for the thesis
Alternative title
A study of regenerated cellulose fibers as an alternative for cotton in knitted materials. (English)
Abstract [sv]

Bomullsfibern har många fördelaktiga egenskaper som gör den allmänt omtyckt bland både konsumenter och producenter. Den vanligaste framställningen av fibern är konventionellt odlad bomull, men dessvärre har denna typ av framställningsprocess en negativ inverkan på miljön i form av hög kemikalieförbrukning och hög vattenanvändning. I samband med att bomullens negativa miljöpåverkan uppmärksammas, bidrar det till en ökad efterfrågan på miljövänliga fibrer med skonsammare processer. Denna studie har utifrån detta perspektiv undersökt, jämfört och testat förutsättningarna för att helt eller delvis ersätta bomull i trikåmaterial.

De fibrer som har undersökts är de regenererade cellulosafibrerna Tencel, lyocell och modal. Dels har två hundraprocentiga material testats: Tencel A100 och lyocell, dels två fiberblandningar: bomull/modal och GOTS-bomull/Tencel LF. Samtliga material har bestått av rågarn med garntjocklek Ne 30/1 och stickats fram i en rundstickningsmaskin. Testerna som har utförts rör dimensionsstabilitet, spiralvridning, noppbildning, nötningshärdighet och slutligen draghållfasthet. För att säkerställa trovärdiga resultat har testerna genomförts upprepade gånger och därefter har ett medelvärde för varje material beräknats. De material som uppvisat bäst resultat avseende egenskaper och miljöpåverkan var Tencel A100 och lyocell, samt fiberblandningen GOTS-bomull/Tencel LF.

Abstract [en]

The cotton fiber has many advantageous properties which make it widely popular among both consumers and producers. The most common production of the fiber is conventionally grown cotton. This type of manufacturing process has unfortunately a negative impact on the environment because of its high chemical consumption and high water use. Since the negative environmental impact regarding cotton has got more attention, it has contributed to an increased demand for more environmentally friendly fibers with more eco-friendly processes. From this perspective, this study has examined, compared and tested the conditions for completely or partially replacing cotton in knitted materials.

The fibers that have been examined are the regenerated cellulose fibers Tencel, lyocell and modal. Tencel A100 and lyocell have been tested independently and two fiber blends consisting of cotton/modal and GOTS-certified cotton/Tencel LF have been knitted and tested in this study. All materials have consisted of raw yarn with yarn thickness of Ne 30/1 and has been knitted in a circular knitting machine. The tests that have been carried out is dimensional stability, twisting, pilling resistance, abrasion resistance and finally tensile strength. To ensure reliable results, the tests have been done repeatedly and then an average value for each material has been calculated. The materials that showed the best results in terms of properties and environmental impact were Tencel A100, lyocell and the fiber mixture GOTS-certified cotton/Tencel LF.

Place, publisher, year, edition, pages
2019.
Keywords [en]
Cotton, Lyocell, Modal, Tencel, Cellulose, Regenerated fibers, Environmental impact, Fibre properties
Keywords [sv]
Bomull, Lyocell, Modal, Tencel, Cellulosa, Regenatfibrer, Miljöpåverkan, Fiberegenskaper
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:hb:diva-22026OAI: oai:DiVA.org:hb-22026DiVA, id: diva2:1370224
Available from: 2019-11-15 Created: 2019-11-14 Last updated: 2019-11-15Bibliographically approved

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