Niumag PQ001 Spin Finish Analyzer was launched in 2008. After years of upgrading, PQ001 has many advan ages such as small size, high precision, good repeatability, good stability and excellent cost/benefit characteristics. Based on these advantages, PQ001 has been widely used in the determination of oil content of textile fiber.
Rapid determination of Spin Finish content of textile fiber
Decades ago, when fiber products were mainly processed within the same textile mill or factory, analytical testing was still in the fledgling stages if available at all. Over the years, as the industry grew and trade increased, mechanical tests and wet chemical analytical tests were introduced. The determination of the Spin Finish content on fiber materials quickly gained importance as a wet chemical extraction method. The testing was slow (at least a couple of hours), operator-dependent, destructive, and hazardous because it required extraction solvents.
Principles of NMR Method
The TD-NMR signal of a fiber sample exhibits different components, each characterized by a typical decay behaviour. Whereas the fiber shows a very rapid signal decay, moisture on the fiber is characterized by an intermediate relaxation behaviour.
Well separated from both is the NMR signal of Spin Finish. Therefore, Spin Finish can be observed and quantitatively analyzed by routine TD-NMR methods.
Applicability of Spin Finish Method
Bruker has proven in multiple studies that TD-NMR methodology works well for almost all types of fibers and Spin Finishes. Based on this experience of many years, multiple proven methods have been released, e.g. for technical and textile fibers multifilament, monofilament, staple fibers as well as texturized samples polyester, polyamide, polypropylene, polyethylene, polyacrylonitrile fibers and yarns polypropylene, polyethylene nonwovens.