title: Flexible transparent PES/silver nanowires/PET sandwich-structured film for high-efficiency electromagnetic interference shielding.
abstract: We have developed a kind of high-yield synthesis strategy for silver nanowires by a two-step injection polyol method. Silver nanowires and polyethylene oxide (PEO) (M(w) = 900,000) were prepared in a homogeneous-coating ink. Wet composite films with different thicknesses were fabricated on a PET substrate by drawn-down rod-coating technology. Silver nanowires on PET substrates present a homogeneous distribution under the assistance of PEO. Then PEO was thermally removed in situ at a relatively low temperature attributed to its special thermal behavior under atmospheric conditions. As-prepared metallic nanowire films on PET substrates show excellent stability and a good combination of conductivity and light transmission. A layer of transparent poly(ethersulfones) (PESs) was further coated on silver nanowire networks by the same coating method to prevent the shedding and corrosion of silver nanowires. Sandwich-structured flexible transparent films were obtained and displayed excellent electromagnetic interference (EMI) shielding effectiveness.
authors.affiliation: Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, PR China.
authors.forename: Mingjun
authors.initials: M
authors.lastname: Hu
authors.forename: Jiefeng
authors.initials: J
authors.lastname: Gao
authors.forename: Yucheng
authors.initials: Y
authors.lastname: Dong
authors.forename: Kai
authors.initials: K
authors.lastname: Li
authors.forename: Guangcun
authors.initials: G
authors.lastname: Shan
authors.forename: Shiliu
authors.initials: S
authors.lastname: Yang
authors.forename: Robert Kwok-Yiu
authors.initials: RK
authors.lastname: Li
mesh_terms: D004574:Electromagnetic Fields; D008567:Membranes, Artificial; D053768:Metal Nanoparticles / Q000737:chemistry*; D010316:Particle Size; D011092:Polyethylene Glycols / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D013450:Sulfones / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D008567:Membranes, Artificial; D011108:Polymers; D013450:Sulfones; C022840:polyether sulfone; D012834:Silver; D011092:Polyethylene Glycols