Understanding the effect of deacetylation on chitin by measuring chemical shift anisotropy tensor and spin lattice relaxation time

[Display omitted] •The effect of deacetylation on chitin.•Structure and dynamics of chitosan by 2DPASS MAS SSNMR measurement.•Spin-lattice relaxation time measurements.•Calculation of molecular correlation time. The structure and dynamics of the functional biopolymer chitosan were investigated by me...

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Published in:Chemical physics letters 2020-01, Vol.738, p.136782, Article 136782
Main Authors: Dey, Krishna Kishor, Ghosh, Manasi
Format: Article
Language:English
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Summary:[Display omitted] •The effect of deacetylation on chitin.•Structure and dynamics of chitosan by 2DPASS MAS SSNMR measurement.•Spin-lattice relaxation time measurements.•Calculation of molecular correlation time. The structure and dynamics of the functional biopolymer chitosan were investigated by measuring spin-lattice relaxation time, chemical shift anisotropy parameters, and compare those results with that of the chitin. The relaxation time and the correlation time of the carbon nuclei reside at the polysaccharidic backbone of chitosan are decreased due to depolymerization of polysaccharide chain. The effect of the substitution of different functional group at the C2 position of the monomeric sugar unit is portrayed by this type of comparative and comprehensive, which will enlighten the way of finding biodegradable and biocompatible polymers with enormous application in biomedicine.
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2019.136782