采用水热法,以乙二醇(EG)作为还原剂和溶剂制备银纳米线,在硝酸银(Ag NO3)与聚乙烯吡咯烷酮(PVP–K30)摩尔比为1:2时,加入1.0 mg/m L的氯化钠(Na Cl),在160℃的高压反应釜中反应7 h,经用去离子水洗涤静置,得到直径为100 nm左右、长度30~50μm的银纳米线。将得到的银纳米线用无水乙醇配制成1.0 mg/m L的分散液,在1 000 r/min下旋涂制备成膜,然后再以4 000 r/min速率旋涂浓度为21 mg/m L的聚甲基丙烯酸甲酯(PMMA)的1-甲基-2-吡咯烷酮溶液,可制备成具有良好附着性能、透明率为92.90%、方块电阻为12(Ω/□)的透明膜。
Silver nanowires were synthesized by a hydrothermal method from AgNO3 with polyvinylpyrrolidone (PVP-K30) with mole ratio as 1:2, 1.0 mg/mL NaCl, and ethylene glycol (EG) as a reducing agent. The silver nanowires synthesized in autoclave at 160 ℃ for 7 h are about 100 nm in diameter and about 30-50 μm in length. The transparent conductive film was firstly prepared with the silver nanowires (1.0 mg/mL in EG) at rotating speed of 1 000 r/min and then coated with 21 mg/mL polymethylmethacrylate (PMMA) 1-methyl-2-PVP solution at rotating speed of 4 000 r/min. This film prepared has a good adhesion performance, the transparency of 92.90% and the sheet resistance of 12 Ω/□.