Thermal analysis of chitosan based networks
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Data
2005-11-10
Autores
Neto, CGT
Giacometti, J. A.
Job, A. E.
Ferreira, F. C.
Fonseca, JLC
Pereira, M. R.
Título da Revista
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Título de Volume
Editor
Elsevier B.V.
Resumo
In this work two kinds of material were studied: chitosan cross-linked with glutaraldehyde and in a blend with PEO. The resulting products as well as chitosan and PEO raw materials, were analyzed by TG/DTG, DSC and DMTA to determinate the in?uence of cross-linking and PEO addition on thermal properties of the resulting materials. It was observed by thermogravimetry that the water-polymer interaction will be different for the cross-linked material compared to the blend, according to the specific site availability. The in?uence of such modifications (cross-linking and PEO addition), on chitosan thermal stability was also studied. The DSC results showed a good agreement with the TG/DTG results, reinforcing the interpretation given for TG/DTG results. DMTA results indicate that glass transition temperature is around 50 degrees C for the polymer under study. (c) 2005 Elsevier Ltd. All rights reserved.
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Palavras-chave
chitosan, thermal analysis, blends
Como citar
Carbohydrate Polymers. Oxford: Elsevier B.V., v. 62, n. 2, p. 97-103, 2005.