Scholarlink

<p>Electronic waste (e-waste) from ever-shorter device lifecycles is fueling a search for sustainable alternatives to conventional electromagnetic interference (EMI) shielding materials, which are typically non-degradable and hard to recycle. Addressing this challenge, here we present a durable, high-performance EMI shielding film that is both recyclable and biodegradable. Thanks to a simple fabrication process, our introduced composite blends renewable cellulose nanofibers, a conductive <i>n</i>-type polymer, and a small ionic liquid additive into a robust film. This all-organic film achieves tunable shielding effectiveness between 29.77 to 83.77 dB, comparable to traditional metal or carbon-based shields. The film demonstrates good recyclability, retaining 97.72% of its initial EMI shielding performance after ten reprocessing cycles. Furthermore, it undergoes complete biodegradation in soil at the end of its lifecycle, leaving no persistent waste, thereby offering a sustainable solution for EMI shielding applications. Combining strong EMI shielding with end-of-life degradability and reusability, this work offers a sustainable pathway to electronics that reduce e-waste and promote a circular economy.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Sustainable electromagnetic interference shielding materials from cellulose-grafted n-type polymers

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年9月29日

查看全文
  • Siyao Cheng,
  • Zelin Chen,
  • Daohu Sheng,
  • Wei Dong,
  • Rong Cao,
  • Zebin Su,
  • Mengde Wu,
  • Xufei Zhu,
  • Aming Xie,
  • Soumya Mukherjee,
  • Weijin Li

摘要

Electronic waste (e-waste) from ever-shorter device lifecycles is fueling a search for sustainable alternatives to conventional electromagnetic interference (EMI) shielding materials, which are typically non-degradable and hard to recycle. Addressing this challenge, here we present a durable, high-performance EMI shielding film that is both recyclable and biodegradable. Thanks to a simple fabrication process, our introduced composite blends renewable cellulose nanofibers, a conductive n-type polymer, and a small ionic liquid additive into a robust film. This all-organic film achieves tunable shielding effectiveness between 29.77 to 83.77 dB, comparable to traditional metal or carbon-based shields. The film demonstrates good recyclability, retaining 97.72% of its initial EMI shielding performance after ten reprocessing cycles. Furthermore, it undergoes complete biodegradation in soil at the end of its lifecycle, leaving no persistent waste, thereby offering a sustainable solution for EMI shielding applications. Combining strong EMI shielding with end-of-life degradability and reusability, this work offers a sustainable pathway to electronics that reduce e-waste and promote a circular economy.