Interactions of fish gelatin and chitosan in uncrosslinked and crosslinked with EDC films: FT-IR study - Publication - Bridge of Knowledge

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Interactions of fish gelatin and chitosan in uncrosslinked and crosslinked with EDC films: FT-IR study

Abstract

Films based on fish gelatin, chitosan and blend of fish gelatin and chitosan before and after cross-linking with EDC have been characterized by FT-IR spectroscopy. The FT-IR spectrum of fish gelatin film showed the characteristic amide I, amide II and amide III bands, and the FT-IR spectrum of chitosan film confirmed that the polymer was only a partially deacetylated product, and included CH3-C=O and NH2 groups, the latter both in their free –NH2 and protonated –NH3+ form. Analysis of FT-IR spectra of twocomponent, fish gelatin–chitosan film revealed the formation not only of hydrogen bonds within and between chains of polymers, but also of electrostatic interactions between –COO- of gelatin and –NH3+ of chitosan. Modification with EDC provided cross-linking of composites of the film. New iso-peptide bonds formed between activated carboxylic acid groups of glutamic or aspartic acid residue of gelatin and amine groups of gelatin or/and chitosan.

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Category:
Articles
Type:
artykuł w czasopiśmie wyróżnionym w JCR
Published in:
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY no. 117, pages 707 - 712,
ISSN: 1386-1425
Language:
English
Publication year:
2014
Bibliographic description:
Staroszczyk H., Sztuka K., Wolska J., Wojtasz-Pająk A., Kołodziejska I.: Interactions of fish gelatin and chitosan in uncrosslinked and crosslinked with EDC films: FT-IR study// SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY. -Vol. 117, (2014), s.707-712
DOI:
Digital Object Identifier (open in new tab) 10.1016/j.saa.2013.09.044
Verified by:
Gdańsk University of Technology

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