基于超长羟基磷灰石纳米线高度有序排列的拟真体系的仿生宏观带状纤维。,ACS Nano

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基于超长羟基磷灰石纳米线高度有序排列的拟真体系的仿生宏观带状纤维。
ACS Nano ( IF 15.8 ) Pub Date : 2018-11-26 00:00:00 , DOI: 10.1021/acsnano.8b06096
Ri-Long Yang _{1,

2} , Ying-Jie Zhu _{1,

2} , Fei-Fei Chen _{1,

2} , Dong-Dong Qin _{1,

2} , Zhi-Chao Xiong ₁

Affiliation

天然生物中的多种生物材料为构造具有出色机械性能的高级结构材料提供了丰富的结构设计指南和灵感来源。在这项工作中，受天然珍珠母和人骨的启发，一种由超长羟基磷灰石（HAP）纳米线和聚丙烯酸钠（PAAS）具有“砖和砂浆”分层结构的高度有序排列制成的柔性宏观带状纤维具有通过可扩展且方便的湿纺方法开发。使用一维超长羟基磷灰石纳米线的准远距离有序液晶，并将其纺制成连续的柔性宏观带状纤维。在这项工作中，高度有序的超长HAP纳米线充当硬“砖”，而PAAS充当软“砂浆”，得到了珍珠母模拟的分层体系结构。所制备的柔性宏观HAP / PAAS带状纤维具有优异的机械性能，最大抗张强度和杨氏模量分别高达203.58±45.38 MPa和24.56±5.35 GPa。另外，得益于优异的柔韧性和良好的可编织性，可以将所制备的宏观HAP / PAAS带状纤维编织成各种柔性宏观体系。另外，所制备的柔性宏观HAP / PAAS带状纤维可以通过掺入各种功能成分，例如磁性和光致发光成分而进一步功能化。制备的柔性宏观HAP / PAAS带状光纤在智能穿戴设备，光学设备，磁性设备，

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Bioinspired Macroscopic Ribbon Fibers with a Nacre-Mimetic Architecture Based on Highly Ordered Alignment of Ultralong Hydroxyapatite Nanowires

A variety of biological materials in natural organisms supply a rich source of structural design guidelines and inspirations for the construction of advanced structural materials with excellent mechanical properties. In this work, inspired by the natural nacre and human bone, a kind of flexible macroscopic ribbon fiber made from highly ordered alignment of ultralong hydroxyapatite (HAP) nanowires and sodium polyacrylate (PAAS) with a “brick-and-mortar” layered structure has been developed by a scalable and convenient wet-spinning method. The quasi-long-range orderly liquid crystal of one-dimensional ultralong hydroxyapatite nanowires is employed and spun into the continuous flexible macroscopic ribbon fiber. In this work, highly ordered ultralong HAP nanowires act as the hard “brick” and PAAS acts as the soft “mortar”, and the nacre-mimetic layered architecture is obtained. The as-prepared flexible macroscopic HAP/PAAS ribbon fiber exhibits superior mechanical properties, and the maximum tensile strength and Young’s modulus are as high as 203.58 ± 45.38 MPa and 24.56 ± 5.35 GPa, respectively. In addition, benefiting from the excellent flexibility and good knittability, the as-prepared macroscopic HAP/PAAS ribbon fiber can be woven into various flexible macroscopic architectures. Additionally, the as-prepared flexible macroscopic HAP/PAAS ribbon fiber can be further functionalized by incorporation of various functional components, such as magnetic and photoluminescent constituents. The as-prepared flexible macroscopic HAP/PAAS ribbon fiber has potential applications in various fields such as smart wearable devices, optical devices, magnetic devices, and biomedical engineering.

更新日期：2018-11-26

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