Recycling of ionphane films

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Journal Title

Journal ISSN

Volume Title

Kemian tekniikan korkeakoulu | Master's thesis

Authors

Date

2024-08-29

Department

Major/Subject

Materials and Biopolymers

Mcode

Degree programme

Master's Programme in Biological and Chemical Engineering for a Sustainable Bioeconomy

Language

en

Pages

44+7

Series

Abstract

This thesis explores the recyclability of Ionphane, which is a cellulose film synthesized by the Ioncell® technology. The Ioncell® process is a Lyocell type dry-jet wet spinning technology and utilizes a powerful direct cellulose solvent 1,5-diazabicyclo[4.3.0]non-5-enium, acetate ([DBNH][OAc]) to produce cellulose films/fibers of excellent mechanical properties. To ensure the circularity of the produced cellulose films, they were recycled and turned into new films and fibers. After 2 cycles of recycling the same cellulose films, the produced films showed a tenacity of 153.1 MPa and, the produced fiber from the recycled cellulose films with a tenacity of 41.07cN/tex. In comparison to their starting products the mechanical properties are only slightly reduced.

Description

Supervisor

Hummel, Michael

Thesis advisor

Gonzalez Carmona, Eva
Schlapp-Hackl, Inge

Keywords

regenerated films, Ioncell®, closed-loop recycling, master thesis

Other note

Citation

Permanent link to this item

https://urn.fi/URN:NBN:fi:aalto-202409086251

Collections

[dipl] Kemian tekniikan korkeakoulu / CHEM