Table 1.

Comparison of fatigue parameters of PA gels with various hydrogels

Sample	E*, MPa	G0 (λ0), J/m2	β, m3/(J·cycle)	Gtran, J/m2
PA-60	0.14	71.1 (1.94)	4.1 × 10−10	236.2 ± 15.0
PA-30	0.14	69.8 (1.94)	6.1 × 10−10	207.6 ± 0
PA-5	0.14	67.3 (2.04)	7.3 × 10−10	165 ± 12.7
Alginate/PAAm (13, 41)	∼0.1	35 (1.9)	(1.3 ∼ 2.3) × 10−9	84
PAAm-PVA (12)	∼0.03	9.5 (1.4)	5.3 × 10−7	40
PAMPS/PAAm DN (14)	∼0.3	200 ∼ 418 (∼1.5)	(1.3 ∼ 4.5) × 10−9	—
PAAm (30, 35)	∼0.04	4.3 ∼ 64.5 (∼1.3)	(0.3 ∼ 3.4) × 10−7	—

^*The Young’s modulus E is tested under the same condition for the fatigue test.