1. Enhanced mechanical properties of linear segmented shape memory poly(urethane-urea) by incorporating flexible PEG400 and rigid piperazine
Xiao-Yan ZHANG;Yu-Fei MA;Yong-Gang LI;Pin-Pin WANG;Yuan-Liang WANG;Yan-Feng LUO ;
Key Lab of Biorheological Science and Technology (Ministry of Education), Research Center for Bio-inspired Material Science and Engineering, College of Bioengineering, Chongqing University, Chongqing , China ;
Fig.3 Typical stress-strain curves of a PEG400–PUU–PPZ4K1.3 T g = 40.62°C and b BDO–PUU–BDA1K1.2 T g = 43.54°C. The insets indicate 0.2% offset yield points and the reported yielding stress in Tables 3 and 4 is the stress at 0.2% offset yield point.
Frontiers of Materials Science,2012,6(4), Doi: /s