纳米纤维素基泡沫材料在包装领域的研究进展

纳米纤维素作为天然可降解材料，具有优良的力学性能、高比表面积、大长径比等特性。为研究基于纳米纤维素开发的泡沫材料在包装领域的应用，对近年来纳米纤维素基泡沫材料的制备方法及其缓冲、隔热、阻燃、抗菌、疏水等性能进行总结，概括了纳米纤维素泡沫材料在纳米纤维素制备、湿泡沫发泡和泡沫成型干燥等领域的进展。但由于现阶段纳米纤维素制备工艺的复杂性，以及干燥过程中较高的能耗和较长的周期，作为包装材料的关键性能指标还有进一步提升的空间，实现规模化生产仍有一些问题有待解决。通过综述纳米纤维基泡沫材料在包装领域的研究进展，以期为可持续包装材料的发展提供理论支持。

Research Progress of Nanocellulose-Based Foams in Packaging Field

Nanocellulose, as a natural and degradable material, has excellent mechanical properties, high specific surface area, large aspect ratio and other characteristics. In order to study the application of nanocellulose-based foam materials in packaging field, different manufacturing methods of nanocellulose foam materials in recent years and their advances in cushioning, heat insulation, flame retardant, antimicrobial and hydrophobic properties were reviewed. It was indicated that great progress has been made in the fields of nanocellulose preparation, foaming process and foam drying. However, there are still some problems to be solved in the scale production of nanocellulose-based foams due to the complexity of nanocellulose production process and the high energy consumption and long drying time. Moreover, the key performance index of nanocellulose-based foams as packaging materials still needs further improvement. The research progress of nanocellulose-based foams in packaging field was reviewed with the purpose of providing theoretical support for the development of sustainable packaging materials.