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Effects of preparation approaches on optical properties of self-assembled cellulose nanopapers

机译：制备方法对自组装纤维素纳米纸光学性能的影响

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As a flexible, transparent and sustainable material, cellulose nanopapers will gradually replace traditional plastic materials in “green” electronics. However, it is tedious to prepare nanopapers, and the processes have significant effects on the properties of nanopapers. Herein, after TEMPO oxidation and high pressure homogenization, cellulose nanofibrils (CNFs) were successfully produced from the softwood fibers. Then, the nanopapers were fabricated from cellulose nanofibrils using casting and vacuum filtration, and their properties, such as surface morphology, internal structure and optical properties, were examined. The nanopapers produced by casting have much smoother surfaces than those of the nanopapers prepared by filtration. As a result of the varying degrees of light scattering on the surface, nanopapers prepared by filtration present relatively high optical haze (24.2%) and good transmittance (78%) at 550 nm wavelength, whereas nanopapers produced by casting show relatively low optical haze (2.9%) and excellent transmittance (88%). Therefore, the nanopapers prepared by casting and filtration present unprecedented applications in indoor and outdoor display devices, respectively.
机译：纤维素纳米纸作为一种灵活，透明和可持续的材料，将逐步取代“绿色”电子产品中的传统塑料材料。然而，制备纳米纸是乏味的，并且该方法对纳米纸的性能具有显着影响。在此，在TEMPO氧化和高压均质化之后，成功地从软木纤维中生产出纤维素纳米原纤维（CNF）。然后，使用流延和真空过滤从纤维素纳米原纤维制备纳米纸，并检查其性能，例如表面形态，内部结构和光学性能。通过流延制备的纳米纸具有比通过过滤制备的纳米纸更光滑的表面。由于表面上的光散射程度不同，通过过滤制备的纳米纸在550 nm波长处表现出较高的光学雾度（24.2％）和良好的透射率（78％），而通过流延生产的纳米纸显示出较低的光学雾度（ 2.9％）和极好的透射率（88％）。因此，通过流延和过滤制备的纳米纸分别在室内和室外显示装置中呈现出空前的应用。

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