The crystallinity index of cellulose materials was calculated from the height of the 2 0 0 peak (I2 0 0, 2= 22.6◦) and the intensity mini-mum between the peaks at 2 0 0 and 1 1 0 (Iam, 2 = 18◦) using the Segal method (CI (%) = (1 − Iam/I2 0 0) × 100). I2 0 0 represents both a crystalline and amorphous material