Magnetic Resonance in Chemistry | Vol.54, Issue.6 | | Pages 501-494
Hyphenated low-field NMR techniques: combining NMR with NIR, GPC/SEC and rheometry
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 1H-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. Hyphenated low-field NMR techniques are promising characterization methods for online process analytics and comprehensive offline studies of soft materials. In this review, we present a combination of near-infrared spectroscopy and time-domain NMR (TD-NMR) relaxometry, online 1H-NMR spectroscopy 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 methods.
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Hyphenated low-field NMR techniques: combining NMR with NIR, GPC/SEC and rheometry
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 1H-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. Hyphenated low-field NMR techniques are promising characterization methods for online process analytics and comprehensive offline studies of soft materials. In this review, we present a combination of near-infrared spectroscopy and time-domain NMR (TD-NMR) relaxometry, online 1H-NMR spectroscopy 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 methods.
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online process analytics and comprehensive offline studies of soft materials hyphenated lowfield nmr techniques molecular dynamics complementary chemical information timedomain nmr tdnmr characterization methods online 1hnmr spectroscopy gpc separation size exclusion chromatographic chemical and physical properties nearinfrared spectroscopy rheometry
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