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Recovery behavior of samples with between 5 and 20 wt % UPyMA: (a) free-strain recovery and (b) constrained recovery of a sample with 10% UPyMA. Samples were heated to 130 °C, strained to 20% in compression, cooled to Tg, further strained to 40% of the original length, and cooled to −20 °C while maintaining the applied deformation.
