View Item 
      •   Home
      • 1. Schools
      • College of Engineering
      • School of Materials Science and Engineering (MSE)
      • MSE Journal Articles
      • View Item
      •   Home
      • 1. Schools
      • College of Engineering
      • School of Materials Science and Engineering (MSE)
      • MSE Journal Articles
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.
      Subject Lookup

      Browse

      All of DR-NTUCommunities & CollectionsTitlesAuthorsBy DateSubjectsThis CollectionTitlesAuthorsBy DateSubjects

      My Account

      Login

      Statistics

      Most Popular ItemsStatistics by Country/RegionMost Popular Authors

      About DR-NTU

      Ultralight and Flexible Polyurethane/Silver Nanowire Nanocomposites with Unidirectional Pores for Highly Effective Electromagnetic Shielding

      Thumbnail
      Ultralight and Flexible Polyurethane Silver Nanowire Nanocomposites with Unidirectional Pores for Highly Effective Electromagnetic Shielding.pdf (3.413Mb)
      Author
      Zeng, Zhihui
      Chen, Mingji
      Pei, Yongmao
      Seyed Shahabadi, Seyed Ismail
      Che, Boyang
      Wang, Peiyu
      Lu, Xuehong
      Date of Issue
      2017
      School
      School of Materials Science and Engineering
      Version
      Accepted version
      Abstract
      Flexible waterborne polyurethane (WPU)/silver nanowire (AgNW) nanocomposites with unidirectionally aligned micrometer-sized pores are fabricated using a facile freeze-drying process, and their dimensions, densities, and AgNW contents are easily controllable. The high-aspect-ratio AgNWs are well-dispersed in the nanocomposite cell walls, giving the nanocomposites good compression strength and excellent electrical conductivity even at very low densities. The large conductivity mismatch between the AgNWs and WPU also induces substantial interfacial polarization that benefits the absorption of electromagnetic (EM) waves, whereas the aligned cell walls promote multireflections of the waves in the porous architectures, further facilitating the absorption. The synergistic actions of the AgNWs, WPU, and unidirectionally aligned pores lead to ultrahigh EM shielding performance. The X-band shielding effectiveness (SE) of the nanocomposites is 64 and 20 dB at the densities of merely 45 and 8 mg/cm3, respectively, and ultrahigh surface specific SE of ∼1087 dB cm3/(g mm) is achieved with only 0.027 vol % AgNWs, demonstrating that they are promising ultralight, flexible, mechanically robust, high-performance EM shielding materials.
      Subject
      Electromagnetic Interference Shielding
      Nanocomposites
      Type
      Journal Article
      Series/Journal Title
      ACS Applied Materials and Interfaces
      Rights
      © 2017 American Chemical Society (ACS). This is the author created version of a work that has been peer reviewed and accepted for publication by ACS Applied Materials and Interfaces, American Chemical Society (ACS). It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1021/acsami.7b07643].
      Collections
      • MSE Journal Articles
      http://dx.doi.org/10.1021/acsami.7b07643
      Get published version (via Digital Object Identifier)

      Show full item record


      NTU Library, Nanyang Avenue, Singapore 639798 © 2011 Nanyang Technological University. All rights reserved.
      DSpace software copyright © 2002-2015  DuraSpace
      Contact Us | Send Feedback
      Share |    
      Theme by 
      Atmire NV
       

       


      NTU Library, Nanyang Avenue, Singapore 639798 © 2011 Nanyang Technological University. All rights reserved.
      DSpace software copyright © 2002-2015  DuraSpace
      Contact Us | Send Feedback
      Share |    
      Theme by 
      Atmire NV
       

       

      DCSIMG