## Abstract A new approach is presented for the study of the variability of Portuguese reproduction cork using solidβstate ^13^CβNMR spectroscopy and photoacoustic (PAS) FTIR (FTIRβPAS) spectroscopy combined with chemometrics. Cork samples were collected from 12 different geographical sites, and th
Determination of aromaticities and other structural features of Australian coals using solid state 13C NMR and FTIR spectroscopies
β Scribed by S. Supaluknari; F.P. Larkins; P. Redlich; W.R. Jackson
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 731 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0378-3820
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Both solid state (CP-MAS) and gel state (using standard solution state conditions) 13 C NMR spectroscopy have been used to characterize a range of red algae that produce either agar or carrageenan . These techniques allow rapid determination of phycocolloid type within the algal tissue before extens
## Abstract **Summary:** By using DSC, ^13^C CP/MAS NMR and SEM, we studied the physical properties and chemical structure of silk fibers grafted with methacrylamide (MAA). At a given MAA concentration, the inverse of fiber weight gain linearly increased with increasing square root of the initiator