Some articles have reported coherence length obtained from the XRD using scherrer formula as conjugation length of the polymer.
Whether both of them are same quantity or different ?
Coherence length is a crystallographic property (measured in length units) describing the size of crystalline domains, whereas conjugation length (measured in numbers of monomer units) describes the average distance between linkage faults in the polymer backbone (branching, alternative linking sites etc).
Even with ideal polymers it is often the case, that each polymer chain is part of several crystalline and amorphous domains. It would cost to much on the entropy account to order the whole length of the polymer chain into a single crystalline domain.
So the two quantities measure different properties, and are obtained by different techniques.
@ Keld West....Thank you very much for your valuable answer. It was really very elpful.
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