Page 55 - MSAM-4-2

Materials Science in Additive Manufacturing Fibrous silk in biomedicine

Figure 1. Mechanical properties of silk fibers and other fibrous materials
Note: The coordinates of each circle’s center represent ultimate strength (X-axis) and breaking strain (Y-axis), while the area indicates the modulus value

Table1. Mechanical data of silk fiber and other fibrous materials

Materials Modulus Ultimate strength Breaking strain Toughness References
(GPa) (MPa) (%) (MJ/m )
3
Bombyx mori silk 7 600 19 70 80
Antheraea yamamai silk 9 650 31 113 81
Antheraea pernyi silk 12 460 23 65 81
Antheraea mylitta silk 8 513 26 79 82
Antheraea assamensis silk 8.5 564 26.4 95 82
Philosamia ricini silk 3.6 400 27.5 71 82
Spider silk 11–13 875–972 17–18 -

Araneus dragline silk 10 1100 27 160 59
Araneus viscid silk 0.5 500 270 150 59
Nephila clavipes dragline silk 11–13 880–970 0.17–0.18 110 59

Polylactic acid 1.2–3.0 350 56 - 59

Nylon fiber 5 950 18 80 80
Kevlar 49 fiber 130 3600 2.7 50 59
Silicone rubber 0.001 850 0.001 100 59
Carbon fiber 300 4000 1.3 25 59
Tendon collagen 1.2 120 12 6 59
Elastin 0.0011 2 150 2 80
Bone 20 160 3 4 59
Wool 0.5 200 50 60 59
Wood 6–20 60–100 - 5–9 41

natural and synthetic fibers such as spider silk, Kevlar 10% to 40%. 50,51 Reported values include a breaking strain
49 fiber, nylon fiber, and bone tissue. Natural silkworm reaching up to 26%, an ultimate strength of 300 – 740
3 52,53
FS demonstrates a tensile strength of approximately MPa, and a toughness of 70 – 78 MJ/m . Among
0.5 – 0.6 GPa with a breaking elongation ranging from natural materials such as wool, cotton, elastic cellulose,

Volume 4 Issue 2 (2025) 4 doi: 10.36922/MSAM025130020