Analyte
Natural and synthetic polymers in solid and liquid state; monomers and low-molecular organic substances; fibres, films, composites
- Needed amount: 10 mg - 100 mg
Equipment
-
Instruments:
High resolution Fourier transform NMR spectrometer Unity INOVA 500 NB (Varian, USA) for liquid state analysis
High resolution Fourier transform NMR spectrometer Unity INOVA 400 WB (Varian, USA) for solid state analysis -
Frequency ranges:
50 - 500 MHz for liquid state analysis (nuclei 1H, 2H, 13C, 15N, 17O, 19F, 23Na, 29Si, 31P),
60 - 400 MHz for solid state analysis (nuclei 1H, 2H, 13C, 19F, 23Na, 27Al, 29Si, 31P) -
Probes:
{1H-19F } / {15N-31P} 5 mm switchable probe,
1H / {15N-31P} 5 mm PFG indirect detection probe,
1H / {2H-31P} 5 mm CP/MAS probe (up to 12 kHz spinning frequency)
Evaluation methods and targets
Measurement of one- and two-dimensional NMR spectra of several nuclei with diverse pulse methods
- Chemical shifts
- Coupling constants
- Line intensities
- Line width and line shapes
- Relaxation times
Aim
- Identification and determination of the chemical structure of organic compounds
- Characterization of natural polymers like cellulose and starch as well as their derivatives with regard to their molecular and supermolecular structure
- Determination of the degree of substitution of polysaccharide derivatives
- Determination of the constitution and chain microstructure of synthetic polymers and copolymers
- Characterization of composite materials
Application examples
Contact
Dr. Andreas Ebert
Research devision
Biopolymers
phone +49 (0) 331/ 568-1825
fax +49 (0) 331/ 568-3815
email Andreas.Ebert@iap.fraunhofer.de
Research devision
Biopolymers
phone +49 (0) 331/ 568-1825
fax +49 (0) 331/ 568-3815
email Andreas.Ebert@iap.fraunhofer.de
Comparative and additional methods