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. Author manuscript; available in PMC: 2016 Jan 31.
Published in final edited form as: J Biomed Mater Res A. 2014 Jun 3;103(2):782–790. doi: 10.1002/jbm.a.35219

Table 1.

Mechanical properties of collagen and ELP-collagen hydrogels. Error bars represent 95% confidence intervals.

Properties Hydrogels
Collagen ELP-collagen
Day 1
Thickness (mm) 1.8 ± 0.2 1.5 ± 0.2
Width (mm) 3.1 ± 0.1 3.5 ± 0.3•
Tensile Strength (kPa) 6.6 ± 1.5 8.2 ± 2.9
Young’s Modulus (kPa) 10.7 ± 2.7 22.0 ± 7.5•
Toughness (kJ/m3) 2.4 ± 1.0 3.3 ± 1.2
Elongation at Break (%) 119.7 ± 31.3 76.0 ± 11.5•
Day 7
Thickness (mm) 1.8 ± 0.2 2.1 ± 0.3
Width (mm) 3.6 ± 0.1# 3.8 ± 0.2
Tensile Strength (kPa) 10.3 ± 1.5# 8.2 ± 2.3
Young’s Modulus (kPa) 14.4 ± 2.2 21.4 ± 4.5
Toughness (kJ/m3) 4.2 ± 0.7# 3.6 ± 1.4
Elongation at Break (%) 81.4 ± 11.7 68.5 ± 8.5
•

p < 0.05 against the collagen hydrogels at same time point.

#

p < 0.05 against day 1 for the same type of hydrogels.