I have conducted XRD analysis of rice flour of different varieties and types. In order to interpret the results, what is the relationship between the crystallite size and percentage or relative crystallinity. Means whether the crystallinity increases with increase in the crystallite size or crystallinity decreases with increase in the crystallite size?
Crystallite size is the avg size of crystalline structure in bulk or film....and crystallanity appears like portion of bulk having crystallites in it...so if crystallite size is not comparable ...means way far from single crystal...then they appear independent but when structure is moving towards single crystal both are align in same direction.
Dear Shrinivas Deshpande
To add up to the answer given by respected Jignesh G. Hirpara, in my opinion
1. More crystallinity means higher degree of structural ordering (atomic ordering).
2. The crystallite size is inversely proportional to the fwhm (Scherrer's formula), therefore, smaller the fwhm (means more sharp peak), more is crystallite dimension.
3. So, lesser is fwhm, sharper is the peak, larger is crystallite dimension and therefore larger is crystallinity
Thank you very much Kavita Kumari madam for your answer. Can you please share any reference articles pertaining to your answer for further reading if you have.
Dear Shrinivas Deshpande
I hope you find this book helpful.
https://link.springer.com/content/pdf/bfm%3A978-1-4899-0148-4%2F1.pdf
Crystallite size is affected by coherent diffracting size in the crystalline of rise starch . which assigned to the defect density of the crystalline component in the composite.
Dear Deshpande, I agree with the confirmation given by Mr. Nadir Fadhil. Actually, since many of our agricultural commodities belong to polymorphic materials, crystalline size cannot be extracted. Hence, the relative crystallinity of the A and B type polymorphs) can be alone explained. Instead of interrelating them.
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