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Solid-state NMR method for the quantification of cellulose and polyester in textile blends

Author:
Haslinger, Simone, Hietala, Sami, Hummel, Michael, Maunu, Sirkka Liisa, Sixta, Herbert
Source:
Carbohydrate polymers 2019 v.207 pp. 11-16
ISSN:
0144-8617
Subject:
acid hydrolysis, calibration, carbon, cellulose, cellulosic fibers, cotton, fabrics, nuclear magnetic resonance spectroscopy, polyesters, stable isotopes, wastes
Abstract:
The valorization of cellulose rich textile waste is promoted by the development of a novel solid-state NMR method for the quantification of cellulose and polyester in textile blends. We applied 13C CP-MAS NMR as a tool for the quantification and structural characterization of cellulose in cotton polyester blends. Gaussian functions were used to integrate the spectra obtained from a set of calibration standards in order to calculate a sigmoidal calibration curve. Acid hydrolysis was chosen as a reference method. The results demonstrated that solid-state NMR enables a reliable determination of cellulose and polyester in both preconsumer and postconsumer waste textiles and suggests a possible extension of the concept to blends of man-made cellulose fibers (MMCFs) and polyester.
Agid:
6227174