title: Hyphenated low-field NMR techniques: combining NMR with NIR, GPC/SEC and rheometry.
abstract: Hyphenated low-field NMR techniques are promising characterization methods for online process analytics and comprehensive offline studies of soft materials. By combining different analytical methods with low-field NMR, information on chemical and physical properties can be correlated with molecular dynamics and complementary chemical information. In this review, we present three hyphenated low-field NMR techniques: a combination of near-infrared spectroscopy and time-domain NMR (TD-NMR) relaxometry, online (1) H-NMR spectroscopy measured directly after size exclusion chromatographic (SEC, also known as GPC) separation and a combination of rheometry and TD-NMR relaxometry for highly viscous materials. Case studies are reviewed that underline the possibilities and challenges of the different hyphenated low-field NMR methods. Copyright © 2015 John Wiley & Sons, Ltd.
authors: Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute for Technology (KIT), Karlsruhe, 76131, Germany.
authors: Volker
authors: V
authors: Räntzsch
authors: Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute for Technology (KIT), Karlsruhe, 76131, Germany.
authors: Manfred
authors: M
authors: Wilhelm
authors: Pro2NMR, Institute for Biological Interfaces and Institute for Mechanical Process Engineering and Mechanics, Karlsruhe Institute of Technology (KIT), Karlsruhe, 76131, Germany.
authors: Gisela
authors: G
authors: Guthausen
keywords: NIR-NMR; SEC-NMR; TD-NMR; hyphenated methods; low-field NMR; relaxometry; rheoNMR