蜘蛛大壶状腺丝的反复拉伸力学行为和性能

蒋平, 吴丽华, 吕太勇, José Pérez-Rigueiro, 王安萍

Repetitive Stretching Tensile Behavior and Properties of Spider Major Ampullate Gland Silk

JIANG Ping, WU Lihua, LV Taiyong, Pérez-Rigueiro José, WANG Anping

图7 蜘蛛大壶状腺丝力学行为记忆能力

Fig.7 Memory capacity on tensile behavior of spider Mas. The curves (a~d, e~j,k~l and m~p) are respectively from same silk samples. The curves (b, d, f, h, j, l and p) are true stress-true strain curves corresponding to the force-displacement curves (a, c, e, g, i, k and o). These curves show that Mas revert independently from its previous loading history by an about 5 min interval after last subjected to yield and hardening region, furthermore, Mas can reproduce the last time tensile behavior via only one stretch after a few hours or overnight interval. There was significant difference in the original length (L0) of silk samples before stretching between the two groups for Fig.a, b, c, d, k and l (P < 0.05), and the other differences were all not significant (P > 0.05)