54 research outputs found
In situ label-free imaging of hemicellulose in plant cell walls using stimulated Raman scattering microscopy
Get PDFHigh-Throughput Prediction of Acacia and Eucalypt Lignin Syringyl/Guaiacyl Content Using FT-Raman Spectroscopy and Partial Least Squares Modeling
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New methods for cellulose characterization using FT raman spectroscopy and multivariate calibration methods
No full textNew method for determining the degree of cellulose I crystallinity by means of FT Raman spectroscopy
No full textA Raman crystallinity index - Xc(Raman) - characterizing the degree of crystallinity of partially crystalline cellulose I samples was created, utilizing the crystallinity dependence of CH2 bending modes. For calibration, physical mixtures containing different mass fractions of crystalline cellulose I and its amorphous form were prepared. Crystallinities from 0 to 60% were generated. Relative intensity ratios of the Raman lines I-1481 (cm-1) and I-1462 (cm-1) characterizing crystalline and amorphous parts of cellulose I correlated linearly with the mass fraction of crystalline cellulose I of the mixtures. Xc(Raman) values of microcrystalline celluloses of different origins and varying degree of crystallinity correlated reasonably with results obtained from NMR spectroscopy (Xc(NMR) values)
The vibrational behaviour of pentaccordinated organo-tin(IV) compounds. IR and Raman investigations on 2,8,9-tricarbastannatranes
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