Abstract Manipulating the nanofiber building block within nacre-inspired materials provides a great and partly unforeseen opportunities to prepare strong, tough functional nanocomposites. In this work, we demonstrate a scalable hydrogel processing route to organize aramid nanofiber for improving the mechanical property of clay-based nacre-mimetics. High-strength, foldable clay-based artificial nacre containing aramid nanofiber and poly(vinyl alcohol) is fabricated by a continuous gelation-crosslinking-stretching route. Such route results in a well-organized layered composite structure that aramid nanofibers are closely entangled, well oriented and tightly adhere to the co-oriented nanoclay by crosslinked poly(vinyl alcohol). As a result, the clay-based artificial nacre exhibits high strength (496.6 ± 20 MPa), outstanding toughness (13.6 ± 1.0 MJ/m3), remarkable retention (≈85%) of mechanical property after folding for 100 cycles, good transparency and almost complete blocking of UV light (99.85%).

中文翻译：

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一种可扩展的水凝胶加工路线，可制备高强度、可折叠的粘土基人造珍珠层

摘要 在受珍珠层启发的材料中操纵纳米纤维构建块为制备坚固、坚韧的功能性纳米复合材料提供了巨大且部分不可预见的机会。在这项工作中，我们展示了一种可扩展的水凝胶加工路线来组织芳纶纳米纤维，以提高粘土基珍珠层模拟物的机械性能。含有芳纶纳米纤维和聚乙烯醇的高强度、可折叠粘土基人造珍珠母是通过连续凝胶化-交联-拉伸路线制造的。这样的路线产生了组织良好的层状复合结构，芳纶纳米纤维通过交联聚乙烯醇紧密缠结、定向良好并紧密粘附在共定向的纳米粘土上。因此，粘土基人造珍珠母具有高强度（496.6 ± 20 MPa）、优异的韧性（13.6 ± 1.