Table 1. Summary of Mechanical Properties for All Fiber Groups and Respective Percent Changes.
| (A)
maximum stress (MPa) |
(B)
maximum strain (mm/mm) |
|||||||
|---|---|---|---|---|---|---|---|---|
| mean | Std. Dev. | % change from controla | % change from LGSb | mean | Std. Dev. | % change from controla | % change from LGSb | |
| control | 751.7 | 110.6 | 0.31 | 0.04 | ||||
| LGS | 1014.1 | 176.5 | 34.9 | 0.32 | 0.10 | 3.2 | ||
| GR–0.2LGS | 1211.2 | 322.3 | 61.1 | 19.4 | 0.31 | 0.09 | 0.0 | –3.1 |
| GR–1LGS | 947.2 | 73.5 | 26.0 | –6.6 | 0.27 | 0.01 | –12.9 | –15.6 |
| SWNT–0.2LGS | 1345.5 | 274.0 | 77.0 | 32.7 | 0.36 | 0.05 | 16.1 | 12.5 |
| SWNT–1LGS | 1096.0 | 124.8 | 45.8 | 8.1 | 0.34 | 0.15 | 9.7 | 6.2 |
| (C)
toughness (MJ/m3) |
(D)
elastic modulus (GPa) |
|||||||
|---|---|---|---|---|---|---|---|---|
| mean | Std. Dev. | % change from controla | % change from LGSb | mean | Std. Dev. | % change from controla | % change from LGSb | |
| control | 163.0 | 28.3 | 6.2 | 1.45 | ||||
| LGS | 218.6 | 68.1 | 34.1 | 11.3 | 2.0 | 81.5 | ||
| GR–0.2LGS | 266.5 | 96.3 | 63.5 | 21.9 | 9.7 | 2.6 | 56.8 | 26.0 |
| GR–1LGS | 180.6 | 13.5 | 10.8 | –17.4 | 10.9 | 1.0 | 76.3 | –50.0 |
| SWNT–0.2LGS | 333.8 | 65.0 | 104.8 | 52.7 | 13.4 | 3.9 | 116.8 | 93.1 |
| SWNT–1LGS | 260.6 | 119.8 | 59.9 | 19.2 | 9.4 | 4.6 | 52.3 | 123.0 |
a
% change is determined from the differences between the mechanical properties of the control fibers and the mechanical properties of the other groups.
b
% change is determined from the differences between the mechanical properties of the LGS-treated fibers and the mechanical properties of the other groups except the controls.