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Self-Helical Fiber for Glucose-Responsive Artificial Muscle.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-04-21 , DOI: 10.1021/acsami.0c03120 Hyeon Jun Sim 1 , Yongwoo Jang 1 , Hyunsoo Kim 1 , Jung Gi Choi 1 , Jong Woo Park 1 , Dong Yeop Lee 1 , Seon Jeong Kim 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-04-21 , DOI: 10.1021/acsami.0c03120 Hyeon Jun Sim 1 , Yongwoo Jang 1 , Hyunsoo Kim 1 , Jung Gi Choi 1 , Jong Woo Park 1 , Dong Yeop Lee 1 , Seon Jeong Kim 1
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A helical configuration confers a great advantage in artificial muscle due to great movement potential. However, most helical fibers are exposed to a high temperature to produce the coiled helical structure. Hence, thermoset polymer-composed hydrogels are difficult to fabricate as helical fibers due to their thermal degeneration. Here, we describe a self-helical hydrogel fiber that is produced without thermal exposure as a glucose-responsive artificial muscle. The sheath-core fiber was spontaneously transformed into the helical structure during the swelling state by balancing the forces between the untwisting force of the twisted nylon fiber core and the recovery force of the hydrogel sheath. To induce controllable actuation, we also applied a reversible interaction between phenylboronic acid and glucose to the self-helical hydrogel. Consequently, the maximum tensile stroke was 2.3%, and the performance was six times greater than that of the nonhelical fiber. The fiber also exhibited tensile stroke with load and a maximum work density of 130 kJ/m3. Furthermore, we showed a reversible tensile stroke in response to the change in glucose level. Therefore, these results indicate that the self-helical hydrogel fiber has a high potential for use in artificial muscles, glucose sensors, and drug delivery systems.
中文翻译：
葡萄糖反应性人造肌肉的自螺旋纤维。
由于巨大的运动潜力，螺旋结构在人造肌肉中具有很大的优势。然而，大多数螺旋纤维暴露于高温下以产生盘绕的螺旋结构。因此，由于其热变性，热固性聚合物复合水凝胶难以制成螺旋纤维。在这里，我们描述了一种自螺旋水凝胶纤维，该纤维在不进行热暴露的情况下作为葡萄糖反应性人造肌肉产生。通过平衡加捻的尼龙纤维芯的解捻力和水凝胶套的回复力之间的力，皮芯纤维在膨胀状态下自发地转变成螺旋结构。为了诱导可控的驱动，我们还将苯基硼酸和葡萄糖之间的可逆相互作用应用于自螺旋水凝胶。所以，最大拉伸冲程为2.3％，性能是非螺旋纤维的六倍。该纤维还表现出带负荷的拉伸冲程，最大工作密度为130 kJ / m3。此外，我们显示了响应于葡萄糖水平变化的可逆拉伸冲程。因此，这些结果表明，自螺旋水凝胶纤维在人造肌肉，葡萄糖传感器和药物递送系统中具有很高的潜力。
更新日期：2020-04-10
中文翻译：
葡萄糖反应性人造肌肉的自螺旋纤维。
由于巨大的运动潜力，螺旋结构在人造肌肉中具有很大的优势。然而，大多数螺旋纤维暴露于高温下以产生盘绕的螺旋结构。因此，由于其热变性，热固性聚合物复合水凝胶难以制成螺旋纤维。在这里，我们描述了一种自螺旋水凝胶纤维，该纤维在不进行热暴露的情况下作为葡萄糖反应性人造肌肉产生。通过平衡加捻的尼龙纤维芯的解捻力和水凝胶套的回复力之间的力，皮芯纤维在膨胀状态下自发地转变成螺旋结构。为了诱导可控的驱动，我们还将苯基硼酸和葡萄糖之间的可逆相互作用应用于自螺旋水凝胶。所以，最大拉伸冲程为2.3％，性能是非螺旋纤维的六倍。该纤维还表现出带负荷的拉伸冲程，最大工作密度为130 kJ / m3。此外，我们显示了响应于葡萄糖水平变化的可逆拉伸冲程。因此，这些结果表明，自螺旋水凝胶纤维在人造肌肉，葡萄糖传感器和药物递送系统中具有很高的潜力。
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