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Artificial spider silk from ion-doped and twisted core-sheath hydrogel fibres.
Nature Communications ( IF 14.7 ) Pub Date : 2019-11-22 , DOI: 10.1038/s41467-019-13257-4 Yuanyuan Dou 1 , Zhen-Pei Wang 2 , Wenqian He 1 , Tianjiao Jia 1 , Zhuangjian Liu 2 , Pingchuan Sun 1 , Kai Wen 1, 3 , Enlai Gao 4 , Xiang Zhou 3 , Xiaoyu Hu 1 , Jingjing Li 1 , Shaoli Fang 5 , Dong Qian 6 , Zunfeng Liu 1
Nature Communications ( IF 14.7 ) Pub Date : 2019-11-22 , DOI: 10.1038/s41467-019-13257-4 Yuanyuan Dou 1 , Zhen-Pei Wang 2 , Wenqian He 1 , Tianjiao Jia 1 , Zhuangjian Liu 2 , Pingchuan Sun 1 , Kai Wen 1, 3 , Enlai Gao 4 , Xiang Zhou 3 , Xiaoyu Hu 1 , Jingjing Li 1 , Shaoli Fang 5 , Dong Qian 6 , Zunfeng Liu 1
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Spider silks show unique combinations of strength, toughness, extensibility, and energy absorption. To date, it has been difficult to obtain spider silk-like mechanical properties using non-protein approaches. Here, we report on an artificial spider silk produced by the water-evaporation-induced self-assembly of hydrogel fibre made from polyacrylic acid and silica nanoparticles. The artificial spider silk consists of hierarchical core-sheath structured hydrogel fibres, which are reinforced by ion doping and twist insertion. The fibre exhibits a tensile strength of 895 MPa and a stretchability of 44.3%, achieving mechanical properties comparable to spider silk. The material also presents a high toughness of 370 MJ m-3 and a damping capacity of 95%. The hydrogel fibre shows only ~1/9 of the impact force of cotton yarn with negligible rebound when used for impact reduction applications. This work opens an avenue towards the fabrication of artificial spider silk with applications in kinetic energy buffering and shock-absorbing.
中文翻译：
由离子掺杂和扭曲的核鞘水凝胶纤维制成的人造蜘蛛丝。
蜘蛛丝显示出强度、韧性、延展性和能量吸收的独特组合。迄今为止，使用非蛋白质方法很难获得蜘蛛丝般的机械性能。在这里，我们报道了一种由聚丙烯酸和二氧化硅纳米粒子制成的水凝胶纤维通过水蒸发诱导自组装而产生的人造蜘蛛丝。人造蜘蛛丝由分层核鞘结构水凝胶纤维组成，通过离子掺杂和捻插入增强。该纤维的拉伸强度为895 MPa，拉伸率为44.3%，机械性能可与蜘蛛丝相媲美。该材料还具有 370 MJ m-3 的高韧性和 95% 的阻尼能力。当用于减少冲击应用时，水凝胶纤维的冲击力仅为棉纱的约 1/9，回弹可以忽略不计。这项工作为人造蜘蛛丝的制造及其在动能缓冲和减震方面的应用开辟了一条途径。
更新日期：2019-11-22
中文翻译：
由离子掺杂和扭曲的核鞘水凝胶纤维制成的人造蜘蛛丝。
蜘蛛丝显示出强度、韧性、延展性和能量吸收的独特组合。迄今为止，使用非蛋白质方法很难获得蜘蛛丝般的机械性能。在这里，我们报道了一种由聚丙烯酸和二氧化硅纳米粒子制成的水凝胶纤维通过水蒸发诱导自组装而产生的人造蜘蛛丝。人造蜘蛛丝由分层核鞘结构水凝胶纤维组成，通过离子掺杂和捻插入增强。该纤维的拉伸强度为895 MPa，拉伸率为44.3%，机械性能可与蜘蛛丝相媲美。该材料还具有 370 MJ m-3 的高韧性和 95% 的阻尼能力。当用于减少冲击应用时，水凝胶纤维的冲击力仅为棉纱的约 1/9，回弹可以忽略不计。这项工作为人造蜘蛛丝的制造及其在动能缓冲和减震方面的应用开辟了一条途径。
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