纳米纤维素制备及产业化研究进展

Research Advances in Nanocellulose Preparation and Industrialization

关键词:  纳米纤维素  制备  预处理  干燥  应用  产业化

Key Words:nanocellulose  preparation  pretreatment  drying  appli-cation  industrialization

摘要:纳米纤维素因其高强、轻质、可再生及可生物降解等特性而备受关注，其应用与推广有助于缓解人类在资源环境和健康安全等方面长期存在的困扰。纳米纤维素产品主要包含纤维素纳米晶体（CNC）和纤维素纳米纤丝（CNF）。本文详细综述了纳米纤维素在制备与干燥方面的最新研究进展，对比了其优缺点，重点介绍了已有或潜在具有工业化前景的生产方式，如制备CNC的有机酸/固体酸法、新型溶剂法（DES）、美国高附加值制浆法（AVAP），制备CNF的新型预处理法中的酶水解、有机酸、DES预处理法以及喷雾干燥法等。同时介绍了纳米纤维素的商业生产和应用的现状，分析并展望了其未来研发需求，以期为纳米纤维素的绿色规模化制备及商业化应用提供借鉴。

Abstract:Nanocellulose has attracted much attention due to its high strength， light weight， renewable and biodegradable properties. The application of nanocellulose and its products can help address long-standing problems regarding resources， environment， health， and safety. Nanocellulose mainly includes cellulose nanocrystal （CNC） and cellulose nanofibril （CNF）. This paper reviewed the latest progress of nanocellulose preparation and drying as well as compared the advantages/disadvantages regarding the above-mentioned aspects. The existing or potential industrialized production methods， e.g.， organic acid/solid acid hydrolysis， new solvent （DES）， and American high value-added pulping method （AVAP） for CNC preparation， Enzymatic hydrolysis， organic acid， DES pretreatment， and spray drying for CNF preparation were mainly introduced. The current status quo of commercial production and application for nanocellulose were introduced and further R&D needs were identified as well， in order to provide references for the green， scale preparation and commercial utilization of nanocellulose.