纳米纤维素膜疏水化改性研究进展

Progress of Hydrophobic Nanocellulose Films

近些年来,以纳米纤维素为原料制备出的柔性透明薄膜,因其优异的机械性能、可再生性、生物相容性等,在新型包装材料、透明电子元器件基底等领域展现出巨大的应用价值。然而在潮湿环境下,纳米纤维素膜如何维持高的机械性能,成为其在高附加值领域应用中一个重要又易被忽视的问题。先阐述了纳米纤维素膜以及天然亲水性对其隔绝和机械性能的影响,接着从化学改性、物理吸附、共混交联三种改性方法入手,综述了近些年来纳米纤维素膜疏水改性的研究与进展,以及不同改性方式对膜材料应用性能的影响。

Nanocellulose films are flexible and transparent materials that have drawn increasing attention as novelpackaging materials and substrate of transparent electronic devices due to their excellent mechanical properties,renewability,biocompatibility.Maintaining high mechanical performances under the humid conditions is veryimportant for nanocellulose films applied into high added value fields.Firstly,the hydrophilic nature of thenanocellulose films were presented,then the research progress of the hydrophobic modification includingchemical modification,physical adsorption and cross-linkable polymer matrices was overviewed.And someeffects of the varying modification methods on the application properties of the nanocellulose films are alsoreviewed.