Table 4.

The effect of blending collagen on mechanical properties of final matrices

Matrices composition [form]	Initial strength	Initial elasticity	References
SF (6 wt%); SF/collagen (25:75) [Sponges]	Not mentioned	148 ± 12 kPa; 1532 ± 697 kPac	[129]
SF (4 wt%); SF/collagen (10, 20 wt%) [Sponges]	20 ± 1 kPa; 310 ± 10, 354 ± 25 kPab	0.43 ± 0.055 MPa; 10 ± 0.1, 30 ± 0.1 MPac	[128]
Collagen (0.6%w/v); collagen/chitosan (1%w/v with 80:20 w/w) [Sponges]	0.37 ± 0.05 MPa; 0.51 ± 0.08 MPaa	Not mentioned	[134]
Collagen (2.10 mg/ml); collagen/chitosan (2:1, 1:1 w/w) [Hydrogels]	Not mentioned	~ 10 kPa; ~ 15, 20 kPac	[133]
Collagen/chitosan (100/0; 80/20; 60/40; 50/50; 40/60; 20/80% content in complex) [Nanofibers]	23.7 ± 5.8; 21.7 ± 19.3; 62.8 ± 14.1; 61.8 ± 26.0, 47.0 ± 19.1; 10.5 ± 8.0 MPaa	1371 ± 225; 1611 ± 793; 5966 ± 2137; 6801 ± 3256; 4159 ± 1195; 3601 ± 485 MPac	[136]
Collagen (2 wt%); collagen/HA (9:1 v/v) [Sponges]	Not mentioned	~ 15 kPa; ~ 15 kPac	[164]
Collagen; collagen/HA (0.5, 1.0 mg/ml) [Hydrogel]	Not mentioned	24.3 ± 5.2 Pa; 19.8 ± 3.1, 15.8 ± 3.4 Pad 4.8 ± 2.0 kPa; 11.6 ± 8.3, 41.6 ± 20.9 kPac	[165]
Collagen (0.5%w/v); collagen/CS (0.05%w/v) [Sponges]	Not mentioned	~ 0.2 kPa; 0.2 kPa	[35]
PVA; collagen/PVA (60:40 v/v)	0.98 ± 0.75 MPa; 1.32 ± 0.33 MPaa	3.12 ± 0.78 MPa; 5.40 ± 1.32 MPac	[157]
Collagen; collagen/hydroxyapatite nanoparticles	~ 0.6 kPa; ~ 2.8 kPab	~ 1 kPa; ~ 4.9 kPac	[166]

^aTensile strength

^bCompression strength

^cElastic modulus

^dStorage modulus