Recycling the recycled: Transforming Cotton Dust into High-performance Regenerated Cellulose Fibers Using Ioncell® Technology
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Kemian tekniikan korkeakoulu |
Diplomityö
Ellei toisin mainita, kaikki tekijänoikeuslain mukaiset oikeudet kuuluvat julkaisun tekijälle. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty.
Tekijät
Päivämäärä
2025-02-24
Laitos
Oppiaine
Functional Materials for Global Challenges
Mcode
Koulutusohjelma
Master's Programme in Advanced Materials for Innovation and Sustainability
Kieli
en
Sivut
63
Sarjat
Tiivistelmä
This thesis explores the recycling of cotton waste from the company Recover™ into Ioncell® fibers, demonstrating a proof of concept for converting pre-consumer waste into regenerated cellulose fibers suitable for textile applications. The initial characterization of the cotton dust waste (CoD) established its suitability as a cellulose source, but its high viscosity and molar mass required pre-treatment to reduce the molecular weight for optimal dissolution. The milled and adjusted cotton was dissolved in the ionic liquid, 1,5-diazabicyclo[4.3.0]non-5-enium acetate ([DBNH][OAc]), to prepare a homogeneous spinning dope, which was extruded through a spinneret, and resulted into fibers by the Ioncell® process. The regenerated fibers exhibited excellent mechanical properties and crystallinity, with tenacities that surpassed the industry average for recycled fibers (>50 cN/tex). This work demonstrates the viability of utilizing pre-consumer cotton waste as a raw material for the production of high-performance regenerated fibers, providing an innovative approach to addressing the challenges of textile recycling.Kuvaus
Valvoja
Tehrani, AliOhjaaja
Schlapp-Hackl, IngeHummel, Michael
Avainsanat
Textile chemical recycling, Ioncell®, Circularity, Collaboration, Ionic liquid solvent, Cotton & Cellulose