搪瓷漆
复合材料
韧性
纳米复合材料
材料科学
粘弹性
刚度
聚合物
牙釉质
聚乙烯醇
作者
Hewei Zhao,Shaojia Liu,Yan Wei,Yonghai Yue,Min Gao,Yangbei Li,Xiaolong Zeng,Xuliang Deng,Nicholas A. Kotov,Lin Guo,Lei Jiang
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2022-02-04
卷期号:375 (6580): 551-556
被引量:129
标识
DOI:10.1126/science.abj3343
摘要
Tooth enamel, renowned for its high stiffness, hardness, and viscoelasticity, is an ideal model for designing biomimetic materials, but accurate replication of complex hierarchical organization of high-performance biomaterials in scalable abiological composites is challenging. We engineered an enamel analog with the essential hierarchical structure at multiple scales through assembly of amorphous intergranular phase (AIP)-coated hydroxyapatite nanowires intertwined with polyvinyl alcohol. The nanocomposite simultaneously exhibited high stiffness, hardness, strength, viscoelasticity, and toughness, exceeding the properties of enamel and previously manufactured bulk enamel-inspired materials. The presence of AIP, polymer confinement, and strong interfacial adhesion are all needed for high mechanical performance. This multiscale design is suitable for scalable production of high-performance materials.
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