Near infrared spectroscopy (NIRS) has been used in the textile industry to differentiate fiber types for carpet recycling. Metrohm is pleased to present a collection of 15 applications for the straightforward analysis of wool, cotton, nylon, polyester, and other fibers. The collected applications are available free from metrohm-nirs.com
Blend analysis of different polymer fibers can be analyzed with NIR spectroscopy as well. Real-time analysis of the application of polyvinyl alcohol (PVA or PVOH) sizing to warp yarn has been done with NIR online process analyzers. Common fibers identified with NIRS include: cotton/linen, merchandized cotton, acrylic, modified acrylic, acetate, triacetate, Nomex®, Kevlar® (K-29, K49, and K129), nylon-6, nylon-6,6, silk, polyester, cationic and disperse dyeable polyester, polypropylene, PVA and PVC.