Long Chain Branching Detection and Quantification in LDPE with Special Solvents, Polarization Transfer Techniques, and Inverse Gated 13C NMR Spectroscopy

2018 ◽  
Vol 51 (21) ◽  
pp. 8443-8454 ◽  
Author(s):  
Zhe Zhou ◽  
Stacy Pesek ◽  
Jerzy Klosin ◽  
Mari S. Rosen ◽  
Sukrit Mukhopadhyay ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
13C Nmr ◽  
13C Nmr Spectroscopy ◽  
Polarization Transfer ◽  
Chain Branching ◽  
Long Chain Branching ◽  
Long Chain ◽  
Detection And Quantification

Detection and quantification of branching in polyacrylates by size-exclusion chromatography (SEC) and melt-state 13C NMR spectroscopy

Polymer ◽  
2009 ◽  
Vol 50 (11) ◽  
pp. 2373-2383 ◽  
Author(s):  
Patrice Castignolles ◽  
Robert Graf ◽  
Matthew Parkinson ◽  
Manfred Wilhelm ◽  
Marianne Gaborieau
Keyword(s):  
Nmr Spectroscopy ◽  
Size Exclusion Chromatography ◽  
13C Nmr ◽  
13C Nmr Spectroscopy ◽  
Size Exclusion ◽  
Exclusion Chromatography ◽  
Detection And Quantification

Determination of low degrees of long-chain branching in polybutadiene by double-bond hydrogenation followed by 13C NMR and DEPT spectroscopies

Polymer ◽  
2019 ◽  
Vol 185 ◽  
pp. 121965
Author(s):  
Yuya Ishii ◽  
Masashi Kida ◽  
Tadao Gogota ◽  
Yasumitsu Maru ◽  
Koji Miyauchi
Keyword(s):  
Double Bond ◽  
13C Nmr ◽  
Chain Branching ◽  
Long Chain Branching ◽  
Low Degrees ◽  
Bond Hydrogenation ◽  
Long Chain

scholarly journals (2S,3R,6R)-2-[(R)-1-Hydroxyallyl]-4,4-dimethoxy-6-methyltetrahydro-2H-pyran-3-ol

Molbank ◽  
10.3390/m1140 ◽  
2020 ◽  
Vol 2020 (2) ◽  
pp. M1140
Author(s):  
Jack Bennett ◽  
Paul Murphy
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Ir Spectroscopy ◽  
13C Nmr ◽  
Conjugate Addition ◽  
13C Nmr Spectroscopy ◽  
One Pot ◽  
1H And 13C Nmr ◽  
Esi Mass Spectrometry ◽  
The One

(2S,3R,6R)-2-[(R)-1-Hydroxyallyl]-4,4-dimethoxy-6-methyltetrahydro-2H-pyran-3-ol was isolated in 18% after treating the glucose derived (5R,6S,7R)-5,6,7-tris[(triethylsilyl)oxy]nona-1,8-dien-4-one with (1S)-(+)-10-camphorsulfonic acid (CSA). The one-pot formation of the title compound involved triethylsilyl (TES) removal, alkene isomerization, intramolecular conjugate addition and ketal formation. The compound was characterized by 1H and 13C NMR spectroscopy, ESI mass spectrometry and IR spectroscopy. NMR spectroscopy was used to establish the product structure, including the conformation of its tetrahydropyran ring.

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