纳米纤维素原位负载四氧化三铁杂化材料的构筑及磁性薄膜的研究  

Construction of Hybrid Materials via in Situ Loading of Fe_(3)O_(4)on Nanocellulose and Study of Magnetic Thin Films

作　　者：林诗雨 陈丹 范小平[1] 曹黎明 LIN Shiyu;CHEN Dan;FAN Xiaoping;CAO Liming(College of Food Science,South China Agricultural University,Guangzhou 510642,China)

机构地区：[1]华南农业大学食品学院,广州510642

出　　处：《包装工程》2025年第7期17-23,共7页Packaging Engineering

基　　金：国家自然科学基金青年项目(22105075);广州市基础与应用基础研究专题(2024A04J3893)。

摘　　要：目的以纤维素纳米晶(CNC)为模板,通过共沉淀法在其表面生成四氧化三铁(Fe_(3)O_(4)),构建Fe_(3)O_(4)@CNC磁性杂化粒子,再将杂化粒子与聚乙烯醇(PVA)结合制备磁性复合膜。方法采用共沉淀法在CNC表面原位生成Fe_(3)O_(4),然后通过溶液复合法将杂化粒子与PVA复合制备磁性复合膜,并对杂化粒子及复合膜的形貌、力学性能、热稳定性、紫外线防护性能和磁性等进行研究。结果通过原位负载提高杂化粒子在基体中的分散性,提升复合膜的拉伸强度、模量等,并使其表现出优异的紫外线防护性能和磁性。结论成功制备具有优异力学性能和紫外线防护性能的Fe_(3)O_(4)@CNC/PVA磁性复合膜,复合膜在电磁防护包装等领域具有一定的应用潜力。研究成果为磁性复合膜的研发和应用提供新的思路和方法,具有广阔的应用前景。The work aims to generate ferric oxide(Fe_(3)O_(4))on the surface of cellulose nanocrystals(CNC)by co-precipitation method,and construct magnetic hybrid particles Fe_(3)O_(4)@CNC,and combine them with polyvinyl alcohol(PVA)to prepare magnetic composite films.Fe_(3)O_(4)was in-situ generated on the surface of CNC by co-precipitation method,and then the hybrid particles were combined with PVA to prepare magnetic composite films by solution compounding method.The morphology,mechanical properties,thermal stability,ultraviolet protection and magnetic properties of the hybrid particles and the composite films were studied.The dispersion of hybrid particles in the matrix was improved by in-situ loading,the tensile strength and modulus of the composite films were improved,and the films showed excellent UV protection and magnetic properties.Fe_(3)O_(4)@CNC/PVA magnetic composite films with excellent mechanical properties and UV protection are successfully prepared in this study,which have certain application potential in electromagnetic protective packaging and other fields.The research results provide a new idea and method for the development and application of magnetic composite films,and have broad application prospects.

关 键 词：磁性复合膜 纤维素纳米晶 Fe_(3)O_(4) 原位负载 

分 类 号：TB484[一般工业技术—包装工程] TB33