尼龍6人造肌肉具有低成本、高強度、輕量、高效能的優勢，因此近年來被廣泛討論。本文探討尼龍6人造肌肉的機械性質，包含潛變、應力鬆弛、熱驅動力及拉伸測試。
透過退火可達到尼龍6人造肌肉定型的效果，本文設定四種退火溫度，討論退火溫度對於機械性質的影響。潛變及應力鬆弛的結果可以用standard linear solid model得到很好的解釋，所得的鬆弛速率(βc及βS)符合阿瑞尼士方程式，故可以得到βc和βS的活化能。反應活化能隨著退火的溫度上升而下降。
本文亦探討關於雞肉肌肉纖維和未纏繞尼龍6纖維的機械性質，評估纏繞加工帶來的影響，以及生物肌肉和人造肌肉的比較。拉伸測試結果顯示，未纏繞尼龍6纖維楊式係數最大，而雞肉肌肉纖維最小。三種不同材料都可以用standard linear solid model解釋潛變的結果，所得的鬆弛速率βc都符合阿瑞尼士方程式。未纏繞尼龍6纖維和尼龍6人造肌肉趨勢相同，反應活化能隨著退火的溫度上升而下降。
結晶度的測試中，結晶度隨著退火溫度上升而上升，本文將探討結晶度與機械性質 (潛變、應力鬆弛)的關聯性。

Artificial muscles from nylon 6 fibers have been widely studied for their low-cost, high-strength, light weight, and high performance. We investigate mechanical properties of nylon 6 artificial muscle including creep, stress relaxation, thermal actuation force, and tensile tests.
Shape of nylon 6 artificial muscle can be fixed after annealing, and we apply four different annealing temperatures to study the influence of annealing temperature on mechanical properties. We use standard linear solid model to fit the creep and stress relaxation data, and the relaxation rate (βc and βS) satisfies the Arrhenius equation. The activation energy decreases with increasing annealing temperature.
We also investigate the mechanical properties of nylon 6 non-twisted fibers and chicken muscle fibers to evaluate the influence of twist insertion and the difference between natural muscle and artificial muscle. In tensile tests, nylon 6 non-twisted fibers have largest Young’s modulus and chicken muscle fibers have the smallest. In creep tests, these three materials all follow standard linear model, and the relaxation rates (βc) satisfy the Arrhenius equation. Like nylon 6 artificial muscles, the activation energy in the creep test decreases with increasing annealing temperature for nylon 6 non-twisted fibers.
The studies of crystallinity show that crystallinity increases with increasing annealing temperature. We discuss the influence of crystallinity on creep tests and stress relaxation.  

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