3 years ago

Crosslinking of Semiaromatic Polyesters toward High-Temperature Shape Memory Polymers with Full Recovery

Crosslinking of Semiaromatic Polyesters toward High-Temperature Shape Memory Polymers with Full Recovery
Joerg C. Tiller, Thomas Raidt, Frank Katzenberg, Martin Schmidt
In this work, high-temperature shape memory polymers are realized by end-group crosslinking of the semiaromatic polyesters polyethylene terephthalate as well as polybutylene terephthalate. Both networks exhibit trigger temperatures distinctly higher than 200 °C and excellent shape memory properties such as storable strains of 200%, full fixity of the applied strain in the temporary shape, and full recovery of the permanent shape. High-temperature shape memory polymers (SMPs) are synthesized by end-group crosslinking of polyethylene terephthalate and polybutylene terephthalate. SMPs with trigger temperatures distinctly above 200 °C, large stored strains of up to 200%, and fixity, as well as recovery ratios of 100%, are realized.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/marc.201700768

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