Table 3.
DMA data of control and experimental specimens soaked in 0.1M LA
| Time (Week) | Run | Storage Modulus (MPa) | Tg(°C) | ΔT* | |
|---|---|---|---|---|---|
| 37 °C | 70 °C | ||||
| 1 | C0 | 1789a (55) | 226a(34) | 59.4(0.7) | - |
| HBT-5 | 1839ab(38) | 286a(14) | 63.8(0.6) | 4.4 | |
| HBT-10 | 1713ab(72) | 379 (15) | 67.4(0.9) | 8.0 | |
| HBT-15 | 1741ab(49) | 606b(33) | 71.5(0.2) | 12.1 | |
| HBT-20 | 1542 (37) | 600b(15) | 74.6(0.5) | 15.2 | |
| HBT-35 | 1307 (37) | 655b(43) | >75.0 | >15.6 | |
| 4 | C0 | 1886a (8) | 255a (15) | 61.6(0.3) | - |
| HBT-5 | 1895a (20) | 329a (22) | 65.3(0.3) | 3.7 | |
| HBT-10 | 1758b (40) | 575 (39) | 70(0.2) | 8.4 | |
| HBT-15 | 1807ab(59) | 848b (44) | >75.0 | >13.4 | |
| HBT-20 | 1616 (5) | 808bc(9) | >75.0 | >13.4 | |
| HBT-35 | 1315 (36) | 727c (48) | >75.0 | >13.4 | |
| 8 | C0 | 2002a (19) | 264a(23) | 62.8(0.3) | - |
| HBT-5 | 1946ab(55) | 353a(25) | 65.9(0.3) | 3.1 | |
| HBT-10 | 1870bc(81) | 623 (93) | 70.2(0.7) | 7.4 | |
| HBT-15 | 1771cd(64) | 885b(11) | >75.0 | >12.2 | |
| HBT-20 | 1731d (37) | 858b(23) | >75.0 | >12.2 | |
| HBT-35 | 1430 (51) | 840b(40) | >75.0 | >12.2 | |
Same superscript letters in the same storage time group indicates no significant differences between each other (p<0.05).
*
ΔT=Tg(experimental)-Tg(C0).