纳米纤维素分散性及再分散性最新研究进展

Recent Research Progress on Dispersibility and Redispersibility of Nanocellulose

关键词:  纳米纤维素  分散性  再分散性  功能化改性

Key Words:nanocellulose  dispersion  redispersity  functionalized modification

摘要:纳米纤维素是具有诸多优异特性的绿色生物质材料，广泛应用于催化、光学、传感、储能等材料领域。纳米纤维素胶体即使在较低浓度时也容易发生絮聚，干燥后更是难以再分散。纳米纤维素的分散性与再分散性是决定其规模化生产、储存、运输、功能化改性及应用的直接因素。本文归纳了纳米纤维素分散性及再分散性的影响因素，阐述了改善纳米纤维素分散性及再分散性的研究方法与成果，提出采用物理或化学的方法改性纳米纤维素，解决高浓度/干态纳米纤维素工业化应用面临的亟需解决的分散性及再分散性问题，以期对纳米纤维素的规模化生产、改性及应用研究发挥良好的理论指导作用。

Abstract:Nanocellulose is a green biomass material with many excellent properties and widely used in catalysis， optics， sensing， energy storage， and other material fields. Nanocellulose colloids are prone to flocculate even at low concentration and difficult to be dispersed after being dried. The dispersion and redispersion of nanocellulose are the direct factors that determine its large-scale production， storage， transportation， functional modification， and application. This study summarized factors influencing， expounded research methods and achievements improving the dispersion and redispersion of nanocellulose. Physical or chemical method to modify nanocellulose was proposed to solve the problems of dispersion and redispersion that need to be solved urgently in the industrial application of high-concentration/dry nanocellulose， so as to play a good theoretical guidance role in the large-scale production， modification， and application of nanocellulose.