Abstract
Biodegradable highly nanostructured paper has received great interest in past years due to its excellent optical properties which facilitate its wide applications in green flexible electronics and devices. However, energy and/or time-consuming procedure during the process of fabricating most nanostructured transparent paper are presently the main obstacle to their scalable production. In this work, we demonstrated a novel nanostructured paper with dually high transparency (∼91%) and high haze (∼89%) that was directly fabricated from original paper with rapid ILs-polishing processes. The whole fabricating time only requires 10 min. Compared to the previously reported nanopaper made of the isolated cellulose nanofibers by pure mechanical and/or chemical approaches, this work presented herein is devoted to use green ILs to polish directly the micrometer-sized fibrous paper into the nanostructured paper. This new method brings a rapid fabrication of transparent nanostructured paper while also retaining dual intriguing properties both in optical transmittance and haze. This work is capable of fabricating next-generation flexible and highly transparent and haze paper by a high-speed roll-to-roll manufacturing process with a much lower cost.
Highlights
In this work, we demonstrated a novel ILs-polishing method to rapidly fabricate a highly nanostructured transparent paper directly from an original paper, which has the dually high transparency (~91%) and high haze (~89%) at 550 nm
ILs is rapidly brushed onto the double-side of original paper and infiltrates the cell wall of cellulose fibers, which provides the chance for facilitating the part surface dissolution of cellulose matrix
A schematic diagram showed the evolution in the hierarchical structure of the original paper to the nanostructured transparent paper by ILs-polishing method (Fig. 1)
Summary
Compared to the previously reported nanopaper made of the isolated cellulose nanofibers by pure mechanical and/or chemical approaches, this work presented is devoted to use green ILs to polish directly the micrometer-sized fibrous paper into the nanostructured paper. This new method brings a rapid fabrication of transparent nanostructured paper while retaining dual intriguing properties both in optical transmittance and haze. It’s highly nanostructure and imporous is responsible for its outstanding optical and mechanical properties, and the rapid ILs-polishing process makes possibly viable route towards the fast production of nanostructured transparent paper by the roll-to-roll manufacturing process[23]
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