Optically transparent tough cellulose nanofiber (CNF) reinforced composites were successfully prepared through a simple Pickering emulsion method. The emulsions of CNFs, acrylic resin monomer and water were vacuum filtered to form mats, and the mats were hot-pressed, and UV-cured. Hierarchical CNF networks where the homogenously-dispersed CNFs formed a network surrounding resin droplets in the composites were observed. As the CNF content increased, thicker CNF networks were formed, which could bear greater loads. The strength, modulus, strain and toughness of the composites with 25 wt% CNFs increased to be 18.6, 56.7, 1.5, and 36.3 times as great as those of the neat acrylic films with the great reduction in the thermal expansion to 7.3 ppm K^-1 (1/26^th of the neat polymer) and only 3% degradation in optical transmittance. The composites prepared by Pickering emulsion approach showed higher performances than those from the impregnation method, which could be used in optoelectronic applications.

通过简单的Pickering乳液法成功制备了光学透明的坚韧纤维素纳米纤维（CNF）增强复合材料。真空过滤CNF的乳液，丙烯酸树脂单体和水以形成垫子，然后将垫子热压并进行UV固化。观察到分层CNF网络，其中均匀分散的CNF形成围绕复合材料中树脂滴的网络。随着CNF含量的增加，会形成更厚的CNF网络，这可能会承受更大的负载。在强度，模量，应变和复合材料的韧性，用25％（重量）的CNF增大到18.6，56.7，1.5和36.3倍大的那些纯丙烯酸类膜的与所述热膨胀至7.3 ppm的k中的大减少^{- 1}（1/26^个纯聚合物的重量百分比），光透射率仅降低3％。通过Pickering乳液法制备的复合材料表现出比浸渍法更高的性能，可用于光电应用。