Department of Applied Physics, Aalto University, (former Helsinki University of Technology), P.O. Box 15100, FI-00076 Aalto, Espoo, Finland.
Adv Mater. 2013 Sep 25;25(36):5055-9. doi: 10.1002/adma.201301881. Epub 2013 Aug 2.
Biological high-performance composites inspire to create new tough, strong, and stiff structural materials. We show a brittle-to-ductile transition in a self-assembled nacre-inspired poly(vinyl alcohol)/nanoclay composite based on a hydration-induced glass-to-rubber transition in the 2D-nanoconfined poly(vinyl alcohol) layers. The findings open routes to design dissipative toughening mechanisms to combine stiffness and strength in nanocomposites.
生物高性能复合材料激发了人们创造新型坚韧、高强和刚性结构材料的灵感。我们展示了一种自组装仿珍珠层聚（乙烯醇）/纳米黏土复合材料中的脆性到韧性转变，该转变基于二维纳米受限聚（乙烯醇）层中的水合诱导玻璃-橡胶转变。这一发现为设计耗散增韧机制开辟了道路，使纳米复合材料能够兼具刚度和强度。
