Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , Qingdao 266101, China.
Shenzhen Institute of Advanced Technology, University of Chinese Academy of Sciences , Shenzhen, China.
ACS Nano. 2017 Jan 24;11(1):325-334. doi: 10.1021/acsnano.6b05780. Epub 2017 Jan 11.
Demands for high strength integrated materials have substantially increased across various kinds of industries. Inspired by the relationship of excellent integration of mechanical properties and hierarchical nano/microscale structure of the natural nacre, a simple and facile method to fabricate high strength integrated artificial nacre based on sodium carboxymethylcellulose (CMC) and borate cross-linked graphene oxide (GO) sheets has been developed. The tensile strength and toughness of cellulose-based hybrid material reached 480.5 ± 13.1 MPa and 11.8 ± 0.4 MJm by a facile in situ reduction and cross-linking reaction between CMC and GO (0.7%), which are 3.55 and 6.55 times that of natural nacre. This hybrid film exhibits better thermal stability and flame retardancy. More interestingly, the hybrid material showed good water stability compared to that in the original water-soluble CMC. This type of hybrid has great potential applications in aerospace, artificial muscle, and tissue engineering.
对高强度集成材料的需求在各种行业中大幅增加。受天然珍珠中机械性能优异结合和分级纳米/微观结构的启发，开发了一种简单易行的方法，基于羧甲基纤维素（CMC）和硼酸盐交联氧化石墨烯（GO）片来制备高强度集成人工珍珠。通过 CMC 和 GO（0.7%）之间的简单原位还原和交联反应，纤维素基混合材料的拉伸强度和韧性达到了 480.5±13.1 MPa 和 11.8±0.4 MJm-3，分别是天然珍珠的 3.55 和 6.55 倍。该混合膜具有更好的热稳定性和阻燃性。更有趣的是，与原始水溶性 CMC 相比，混合材料表现出良好的耐水性。这种混合材料在航空航天、人造肌肉和组织工程等领域有很大的应用潜力。
