Mr. Normankhamatov thanks for showing interest.Reading the paper you mentioned,but how to find Ik and Ia intensities in equation 1?That is what I want to know.
Well, it is easy and there is some methods to measure and calculate these values. Please, find these methods with more detailed explanation in this article (pay attention to the graphs).
To determine degree of crystallinity, there is no difference whether it is related to cellulose I or cellulose II. Only you may see some movement of peaks
The dimensions, density, porosity, crystallinity, and reactivity of natural cellulose fibers at different ages of plant are discussed in the below mentioned articles. Happy new year.