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.

通过开发一种新型的固态NMR方法（用于定量​​纺织品混合物中的纤维素和聚酯），促进了富含纤维素的纺织品废料的增值。我们将¹³ C CP-MAS NMR用作定量和定量聚酯棉混纺中纤维素结构的工具。使用高斯函数对从一组校准标准中获得的光谱进行积分，以计算出S型校准曲线。选择酸水解作为参考方法。结果表明，固态NMR能够可靠地确定消费前和消费后废纺织品中的纤维素和聚酯，并建议将该概念扩展到人造纤维素纤维（MMCFs）和聚酯的混合物中。