纳米纤维素及其在水性涂料中的应用研究进展

Progress in Nanocellulose and Its Application in Waterborne Coatings

关键词:  纤维素纳米纤丝  纤维素纳米晶体  水性丙烯酸  水性聚氨酯  水性涂料

Key Words:cellulose nanofibrils  cellulose nanocrystals  waterborne acrylic acid  waterborne polyurethane  waterborne coatings

摘要:纳米纤维素具有高长径比、高结晶度、高杨氏模量、高强度等优点，加之其具有生物质材料的轻质、可降解及可再生等特性，使其成为一种改善水性涂料机械、光学、耐水等性能的优异选择。本文综述了纳米纤维素制备和改性方法，详细论述了纤维素纳米纤丝（CNF）和纤维素纳米晶体（CNC）对水性聚氨酯和水性丙烯酸涂料的性能改善机理及其应用研究进展。最后总结了纳米纤维素复合水性涂料研究现存的问题，并总结了未来的研究方向。

Abstract:Nanocellulose has the advantages of high aspect ratio， high crystallinity， high Young’s modulus and high strength， etc， as well as the biological characteristics of light weight， degradable and renewable， is an excellent choice for improving the mechanical property， optical property and water resistance of waterborne coatings. The preparation and modification methods of nanocellulose were summarized in this paper， and the performance improvement mechanism and application research progress of cellulose nanofibrils （CNF） and cellulose nanocrystals （CNC） on waterborne polyurethane and waterborne acrylic coatings were discussed in detail. Finally， the existing problems in the research of nanocellulose composite waterborne coatings were also summarized， and the future research direction was pointed out.