Thermal studies of chitin–chitosan derivatives

Autor:	Deuber Lincon da Silva Agostini, Fernanda Stuani Pereira, Aldo Eloizo Job, Eduardo René Pérez González
Rok vydání:	2012
Předmět:	chemistry.chemical_classification Thermogravimetric analysis Materials science Polymer Azo coupling Condensed Matter Physics Decomposition Chitosan chemistry.chemical_compound Differential scanning calorimetry chemistry Chitin Polymer chemistry Physical and Theoretical Chemistry Thermal analysis
Zdroj:	Journal of Thermal Analysis and Calorimetry. 114:321-327
ISSN:	1572-8943 1388-6150
DOI:	10.1007/s10973-012-2835-z
Popis:	New poly(azo) amino-chitosan compounds were obtained from the azo coupling reaction of N-benzyl chitosan and diazonium salts. The thermal behavior of these compounds was studied by thermogravimetric analysis (TG), differential thermogravimetric analysis (DTG), TG coupled with a Fourier-transform infrared, and differential scanning calorimetry (DSC). TG/DTG curves of chitin–chitosan polymer showed two thermal events attributed to water loss and decomposition of the polysaccharide after cross-linking reactions. Thermal analysis of the poly(azo) amino-chitosan compounds showed that the decomposition temperatures decreased when compared to the starting chitin–chitosan and N-benzyl chitosan. DSC results showed an agreement with the TG/DTG analyses. Thermal behavior of poly(azo) amino-chitosans suggest that these compounds could be considered as potential thermal sensors.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8c55f5a88df8c02111fed9109edff445 https://doi.org/10.1007/s10973-012-2835-z Zobrazit plný text záznamu Full text from SpringerLink