可用于包装的纤维素基电磁屏蔽材料研究进展

目的 为推动可用于包装的纤维素基电磁干扰(Electromagnetic Interference，EMI)屏蔽材料更深入的研究，综述一些具有包装材料潜质和EMI屏蔽功能的纤维素基薄膜、织物和气凝胶的最新研究进展。方法 主要介绍纤维素基薄膜、织物和气凝胶等3类EMI屏蔽材料的制备方法、EMI屏蔽性能、多功能性和在包装上应用的潜力。结果 当下纤维素基EMI屏蔽材料表现出令人满意的EMI屏蔽效能(EMI Shielding Effectiveness, EMI SE)和力学性能，有望作为包装材料。同时一些材料还显示出抗菌、隔热、抗冲击等特性，使得这些材料能在复杂的场景下应用。结论 通过合理的设计，纤维素基EMI屏蔽材料可拥有优异的EMI屏蔽性能、出色的力学性能和良好的耐用性。归因于上述优势和绿色可降解的特性，这类材料有望在未来取代传统的EMI屏蔽包装材料，然而这些材料通常需要精细的制备工艺，材料的量产和实际应用依然是亟待解决的问题。

Research Progress on Cellulose-based Electromagnetic Interference Shielding Materials for Packaging

The work aims to review the latest research progress of cellulose-based films, textiles, and aerogels with packaging potentials and EMI shielding capacities, so as to promote the in-depth research on cellulose-based electromagnetic interference (EMI) shielding materials for packaging. The preparation methods, electromagnetic interference (EMI) shielding performance, versatility, and potential application in packaging of cellulose-based films, textiles, and aerogels were introduced. The present cellulose-based electromagnetic shielding materials exhibited satisfactory EMI shielding effectiveness (EMI SE) and mechanical properties and were promising as packaging materials. Meanwhile, some materials also showed antibacterial properties, thermal insulation, and impact resistance and could be used in more complex scenarios. Through reasonable design, cellulose-based EMI shielding materials can possess excellent EMI shielding performance, excellent mechanical properties, and good durability. Due to the above advantages and green and degradable properties, these materials are expected to replace traditional EMI shielding packaging materials in the future. However, these materials usually require elaborate fabrication techniques, so the mass production of these materials is still an urgent problem to be solved.