Comparing Modal with Recycled Modal

Saal C
Donnerstag, 14.09.2023, 17:10 - 17:35 Uhr

The study compares pre-consumer modal to modal, recycled via the Ioncell® process. Thereby, the production methods and the estimated resource consumptions, as well as mechanical properties: namely orientation, tensile strength, elongation and abrasion resistance are taken into consideration.

Nina Sirén (Winner Young Scientist Award)

Regenerated cellulose textile fibres are commonly produced from wood or bamboo, however, via novel technologies cellulose-based waste can also be utilized as feedstock. This study examines and compares the production and mechanical properties of pre-consumer modal to modal that has been chemically recycled by means of the Ioncell® process. Based on indicative data found in literature, Ioncell® recycling of modal consumes significantly less resources than virgin modal production. The main contributing factor is the avoided primary feedstock processing. The Ioncell® process is in general less complex and chemically intensive than the modal production process. The fibre properties were analysed through tensile tests and birefringence results. The fibres were spun into yarns, which were tested for tenacity and elongation, and then knitted to test abrasion resistance and serve as visual representations of the fibre qualities. The results indicate that virgin modal has greater elongation and abrasion resistance, while recycled modal fibres exhibit superior tensile strength in both wet and dry conditions and higher degrees of total orientation.