Celluloses have attracted much attention as sustainable and abundant materials. Herein, we focus on nanocomposites based on the oxidation-treated nano-sized fibrillated celluloses, namely TOCNs. The silver nanoparticles (AgNPs) were prepared in TOCN aqueous dispersion. Generally, the AgNPs are quickly agglomerated after preparation. For the inhibition of the agglomeration of AgNPs, it is required that AgNPs were prepared under the chelation of TOCN, followed by reduction therein. Therefore, AgNPs possessed the nano-scaled radii and aligned along the TOCN from the atomic force microscopic measurements. The thermal stabilities and mechanical properties were increased. The anisotropic thermal conductivities originated from the orientation of TOCN in nanocomposites were observed. The loading of the large amounts of AgNP fillers led to the drastic increase of the thermal and electrical conductivities. The conductive paths of heat and electron were formed by the contact of AgNP with each other. We functionalized the TOCN papers through the loading of AgNPs and the obtained nanocomposites sheets served as conductors.

纤维素作为可持续和丰富的材料已引起了广泛的关注。在这里，我们专注于基于氧化处理的纳米原纤化纤维素，即TOCNs的纳米复合材料。在TOCN水性分散液中制备了银纳米颗粒（AgNPs）。通常，制备后，AgNP迅速聚集。为了抑制AgNP的团聚，需要在TOCN的螯合下制备AgNP，然后将其还原。因此，AgNPs具有纳米级的半径，并通过原子力显微镜测量沿着TOCN排列。提高了热稳定性和机械性能。观察到各向异性热导率起源于纳米复合材料中TOCN的取向。大量AgNP填料的负载导致热导率和电导率的急剧增加。AgNP彼此接触形成热量和电子的传导路径。我们通过负载AgNPs功能化了TOCN纸，并将获得的纳米复合材料片用作导体。