| Full text | |
| Author(s): |
Juliana Kloss
[1]
;
Caroline Bugay
[2]
;
Leni Akcelrud
[3]
;
Sônia F. Zawadzki
[4]
;
Shu-Hui Wang
[5]
Total Authors: 5
|
| Affiliation: | [1] UFPR. Departamento de Química
[2] UFPR. Departamento de Química
[3] UFPR. Departamento de Química
[4] UFPR. Departamento de Química
[5] USP. Escola Politécnica
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | POLIMEROS-CIENCIA E TECNOLOGIA; v. 15, n. 1, p. 1-5, 2005-03-00. |
| Abstract | |
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. (AU) | |