D. Optionen Einer Ausweitung Der Medizin

Eichinger, Tobias

doi:10.14361/transcript.9783839425435.187

Cited by 1 publication

(3 citation statements)

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“…Man-made filaments based on renewable lignocellulose are produced at a multimillion tonnage scale with considerable growth of about 10% predicted until 2020 …”

Section: Resultsmentioning

confidence: 99%

“…Man-made cellulosic (MMC) fibers are considered as the best substitute for cotton since its production growth will be largely limited by input factors, such as arable land and water demand. Consequently, MMC fiber production is expected to grow by 9.1% until 2020, followed by synthetic fibers (3%) and cotton (1.3%) . In contrast to synthetic fibers, rayon is made from renewable resources such as cellulose, and it is completely biodegradable .…”

Section: Introductionmentioning

confidence: 99%

“…Rayon fibers are made from wood pulp or chips in a multistep process including removal of noncellulosic components, aging, xanthation, dissolution of the cellulose, ripening, filtering, and spinning of the rayon filament . Some of the relevant rayon fiber characteristics are physiological benefits, softness, comfort, superior moisture management, and suitability for superfine fibers . As semisynthetic fibers, rayon fibers are used mainly as reinforcement material in tires and in clothing industries.…”

Section: Introductionmentioning

confidence: 99%

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Enzymatic Recycling of High-Value Phosphor Flame-Retardant Pigment and Glucose from Rayon Fibers

Vecchiato

Skopek

Jankova³

et al. 2017

ACS Sustainable Chem. Eng.

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Viscose (also known as Rayon) filaments are obtained from regenerated cellulose and are used in many different sectors mainly as reinforcement material in tires and other cord applications and in the clothing industry. The incorporation of a phosphor-containing pigment imparts flame-retardancy properties to these fibers, which then can be used as part of personal protection textiles delivering wear comfort. There are no recycling strategies for these materials being brought to landfills or chemically degraded since incineration is difficult because of their flame retardancy. In this study, an enzyme-based strategy for the recovery of glucose and of the phosphor pigment without altering their chemical structures was developed as a circular economy solution. Rayon fibers were completely hydrolyzed by a cellulase preparation while 98% of the glucose (reducing sugar assay and HPLC analysis) and more than 99% of the flame-retardant pigment present in the fibers was recovered. The recovered pigment was analyzed via 1H, 13C, and 31P NMR, and the purity >95% was comparable to that of the commercially available pigment. The recovered glucose was successfully used as carbon source for ethanol production by Saccharomyces cerevisiae while the recycled phosphor pigment was reused in viscose filament production leading to similar mechanical properties like those measured for virgin fibers. This work presents an environmentally friendly recycling strategy of functional rayon fibers for the recovery of the two major components, namely, glucose and the pigment.

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“…Man-made filaments based on renewable lignocellulose are produced at a multimillion tonnage scale with considerable growth of about 10% predicted until 2020 …”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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