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Furong Xin,Huili Wang,Feixiang Guan,Guodong Li,Zhaoping Song,Dehai Yu,Wenxia Liu 한국섬유공학회 2020 Fibers and polymers Vol.21 No.9
Paper-based material is receiving more and more attention as an alternative of plastics in flexible electronics. However, conventional paper made of cellulose fibers is opaque owing to its micron-sized void space among fibers. Herein,cellulose fiber paper was changed into transparent paper by sequentially coating cationic cellulose nanofibers (CNFs) andpolyvinylpyrrolidone (PVP). The morphology, transparency, thermal and mechanical properties were analyzed. The resultsshow that the coating of CNFs reduces the micron-sized void space in the cellulose fiber paper, favoring the furtherimprovement on the transparency of paper by coating PVP. By optimizing the coating amount of CNFs and PVP, atransparent paper with a transmittance of 88.5 % at 550 nm is obtained. The as-prepared transparent paper also showsimproved thermal stability, slightly increased tensile strength and significantly enhanced deformation resistance. It was apotential candidate of flexible electronic substrates.