. Author manuscript; available in PMC: 2014 Dec 2.

Published in final edited form as: Biomacromolecules. 2012 Feb 28;13(3):584–588. doi: 10.1021/bm300015s

Table 1.

Summary of the mechanical properties of a series of elastic materials, both synthetic and natural, including the water content (ϕ_water), Young’s modulus in tension (E), maximum tensile strain (ε_max), critical strain energy release rate (G_c), and resilience at low and high degrees of strain.

Materials	ϕ_water	E [kPa]	ε_max	G_c [J/m²]	Resilience^* [%]
Materials	ϕ_water	E [kPa]	ε_max	G_c [J/m²]	ε < 0.5	ε > 0.5
PEG	0.95	16	3.0	10	98–99	99
PEG/PDMS	0.8	34	1.7	80	97	97
PAAm	0.9	29	0.5	1–10	98	-
DN^{18, 35}	0.9	100	10–20	10²–10³	77	40
Gelatin	0.9	17	0.4	2–100	90	-
Elastin^{34, 36}	0.4–0.45	1,200	1–2	ND	90	ND
Resilin^{9, 37}	0.5–0.6	2,000	1.9	ND	96–97	97

The resilience data were taken from the first cycle of the stress-strain curve.