Crystallinity Determination of Native Cellulose – Comparison of Analytical Methods*
نویسندگان
چکیده
The crystallinity of cellulose is one of the main structural parameters determining properties like accessibility and reactivity of cellulose. Native cellulose (e.g., wood, pulp, cotton, kenaf, bacteria cellulose) consists of the cellulose I, regenerated cellulose consists of the cellulose II modification. WAXS (wide angle X-ray scattering) is the standard method for the determination of crystallinity of cellulose samples. This method was established by Hermans and Weidinger in 1949 [1]. Nowadays the information concerning crystallinity of cellulose I can be obtained by other methods as well, e.g. Fourier Transform (FT) Raman, FTinfrared (IR), or solid state C-NMR (nuclear magnetic resonance) spectroscopy. A matrix of cellulose I samples from different sources was investigated using the methods mentioned above. The results were compared with those of the standard WAXS method.
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