A characteristic effect of a nano-concave-convex structure of a zirconia nanoparticle assembly with an inherent porous structure and huge surface area enabled us to introduce systematic surface modification by thermal treatment to smooth surface and polymer impregnation to mask the nano-concave-convex structure of the zirconia nanoparticle assembly. A polymer composite prepared from 30 wt% poly(N-isopropylacrylamide) containing 0.02 wt% zirconia nanoparticle assembly with the inherent nano-concave-convex surface structure showed the highest tensile strength in mechanical tensile testing. However, both sintered zirconia nanoparticle assembly with smooth surface and zirconia nanoparticle assemblies with polymer masked surface showed lower strength with longer elongation at break in mechanical tensile testing.

中文翻译：

---

氧化锆填料表面对聚合物复合材料机械拉伸强度的纳米尺度影响。

具有固有的多孔结构和巨大表面积的氧化锆纳米粒子组件的纳米凹凸结构的特征效应，使我们能够通过热处理引入系统化的表面改性，以使表面光滑并进行聚合物浸渍以掩盖纳米凹凸结构的氧化锆纳米粒子组件。由具有0.02wt％的氧化锆纳米颗粒组件的30wt％的聚（N-异丙基丙烯酰胺）制备的聚合物复合材料具有固有的纳米-凹凸表面结构，在机械拉伸试验中显示出最高的拉伸强度。然而，在机械拉伸试验中，具有光滑表面的烧结氧化锆纳米颗粒组件和具有聚合物掩蔽表面的氧化锆纳米颗粒组件均显示出较低的强度和更长的断裂伸长率。