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Configurational statistics of polysaccharide chains. Part II. Cellulose
Author(s) -
Yathindra N.,
Rao V. S. R.
Publication year - 1970
Publication title -
biopolymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 125
eISSN - 1097-0282
pISSN - 0006-3525
DOI - 10.1002/bip.1970.360090704
Subject(s) - degree of polymerization , cellulose , chemistry , polymerization , random coil , chain (unit) , polymer chemistry , solvent , oxygen atom , oxygen , degree (music) , crystallography , polymer , molecule , organic chemistry , physics , circular dichroism , astronomy , acoustics
The characteristic ratio of unperturbed cellulose chain was computed as a function of the angle τ at, the bridge oxygen atom and the degree of polymerization. Very high values of the order of 40 or more, depending on the angle at the bridge oxygen atom, have been obtained for this ratio, indicating that cellulose chains are highly extended. The average dimensions of cellulose chains are found to be sensitive even for small changes in the angle at the bridge oxygen, and these chains attain the character of a random coil in very high molecular weight range (degree of polymerization greater than 2000). The large differences in the unperturbed dimensions of cellulosic chains observed in different solvents have been attributed to the possible small changes in the angle τ caused by specific solvent, interactions.