Improving the phase separation and stability of the hard segment domains at the same time is the novel method reported here to improve the recovery of thermoplastic shape memory polyurethanes (SMPUs) at high strain (>1000%). The shape recovery of the corresponding SMPUs with a more than 1000% strain can reach about 96% at room temperature in 3 min, the recoverable strain (εmax − εpermanent) is more than 960%, which is nearly 2.5 times that of the best value (400%) previously reported.
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Zhang et al. (2013) studied this question.
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