Table 1.

Properties of HAMA hydrogels with different molecular weights and concentrations.

Parameters	100k 1%	100k 0.5%	100k 0.25%	200k 1%	200k 0.5%	200k 0.25%	1,000k 1%	1,000k 0.5%	1,000k 0.25%
Tan δ	0.037	0.038	0.079	0.066	0.113	0.149	0.041	0.048	0.158
E(Pa)	5283±265	1265±143	605±97	5050±348	2624±112	1208±90	7456±539	2213±384	419±127
Stress relaxation time(s)	420.1	666.7				283.4			19.7
Category	stiff-elastic	soft-elastic				stiff-viscoelastic			soft-viscoelastic
ID	Gel 1	Gel 2				Gel 3			Gel 4