. Author manuscript; available in PMC: 2009 Feb 26.

Published in final edited form as: J Control Release. 2007 May 1;120(3):233–241. doi: 10.1016/j.jconrel.2007.04.015

Table 1.

Conditions for hydrogel formation, along with physical property measurements and calculations

HA (%)	PEG (%)	Exposure time (min.)	Mass based swelling ratio	Volume based swelling ratio	Mol. wt. between crosslinks (10⁶, g/mol)	Crosslink density (10⁻⁶, mol/cm³)
1	2	7	90±7	199±15	16±1	0.72±0.05
4	4	5	64±12	141±26	10±2	1.1±0.2
2	4	5	45±4	81±7	5.1±0.5	2.3±0.3
2	6	2.5	31±4	54±7	2.5±0.3	4.5±0.5
1	6	2.5	28±1	48±2	1.98±0.01	5.7±0.1
2	8	2	21±1	36±2	1.33±0.07	8.6±0.5
1	8	2	18±1	30±2	0.93±0.02	12.2±0.3