Resumo

BRITTO, Douglas de; CAMPANA-FILHO, Sérgio P.  e  ASSIS, Odilio B.G. de. Mechanical properties of N,N,N-trimethylchitosan chloride films. Polímeros [online]. 2005, vol.15, n.2, pp.142-145. ISSN 1678-5169.  https://doi.org/10.1590/S0104-14282005000200016.

Films of chitosan and N,N,N-trimethylchitosan were cast from aqueous solutions. Chitosan was dissolved in 1% acetic acid while deionized water was the solvent for N,N,N-trimethylchitosan chloride. The resulting films presented different mechanical behaviors as evaluated by DMTA. The film of chitosan exhibited an elastic-type behavior while that of N,N,N-trimethylchitosan was typically viscous. No glass transition temperatures were observed; however, a discrete thermal transition was detected at 25 °C in the case of the N,N,N-trimethylchitosan.

Palavras-chave : Chitosan; N,N,N-trimethylchitosan; mechanical properties.

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