XRD Studies of Some Cellulose Fibers at Different Temperatures

The X-ray diffractogram of raw ginger (Zingiber officinale), turmeric (Curcuma longa) and eri (Samia cynthia ricini) fibers are taken at different temperatures ( 313, 353, 393, 433 and 473 K) in an X-ray powder diffractometer (Phillips X'Pert Pro) with high temperature attachment (Anton Paar, HTK-16). It is found that the percentage of degree of crystalinity first increases from its value at 313K to the value at 353K, and then decreases at higher temperature for all the experimented raw fibers. The degree of crystallinity finds to be maximum at temperature 353K. The degree of crystallinity of chemically treated ginger fibers also finds to decrease with the rise of temperature with maximum at 353K. The degree of crystallinity of ginger fiber finds to increase due to degumming at a certain temperature.