X-ray diffraction is an important tool to determine phases, crystalline structure and other structural parameters. Paper manuscript samples have been analyzed by X-ray diffraction to investigate changes that might occur in cellulose and fillers during the restoration treatment.
The qualitative evaluation of X-ray diffractograms of all paper samples show the same diffraction features of cellulose as the dominant phase. Cellulose is identified by the characteristic peaks of crystalline fraction at 2θ degrees between 22° and 23° and that correlated to the amorphous fraction at 2θ degrees between 15 and 16 [44].
The XRD patterns of samples 1, 2 and 7 are given in Fig. 4. As seen in this figure, the XRD data show not only the characteristic peaks of cellulose, but also that corresponding to the fillers.