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Polímeros

versão impressa ISSN 0104-1428versão On-line ISSN 1678-5169

Resumo

KLOSS, Juliana et al. Relationships between mechanical properties and structural parameters of polyurethanes containing poly(e-caprolactone). Polímeros [online]. 2005, vol.15, n.1, pp.1-5. ISSN 1678-5169.  http://dx.doi.org/10.1590/S0104-14282005000100004.

Segmented polyurethanes containing polycaprolactone as soft segment were prepared taking into account the biodegradable character of this compound. The hard block was produced by the reaction between tolylene diisocyanate and a chain extender (1,4 butanediol, sucrose or glucose). The mechanical and dynamical properties were evaluated as a function of the contents of rigid blocks. The results were analyzed on the basis of the intermolecular interactions, mainly H bonds, phase mixture, volume of cyclic chain extenders and crosslinking. These polyurethanes are being studied aiming at the preparation of biodegradable materials with useful mechanical properties.

Palavras-chave : Polyurethanes; polycaprolactone; biodegradable materials; mechanical properties.

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