College of Bioresources Chemical and Materials Engineering, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi Provincal Key Laboratory of Papermaking Technology and Specialty Paper Development, Key Laboratory of paper Based Functional Materials of China National Light Industry, Shaanxi University of Science & Technology, No. 6, Xuefu Road, Xi'an, 710021, China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; School of Science, Key Laboratory of Space Applied Physics and Chemistry of Ministry of Education, Northwestern Polytechnical University, No. 127, West Youyi Road, Xi'an, 710072, China.
College of Bioresources Chemical and Materials Engineering, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi Provincal Key Laboratory of Papermaking Technology and Specialty Paper Development, Key Laboratory of paper Based Functional Materials of China National Light Industry, Shaanxi University of Science & Technology, No. 6, Xuefu Road, Xi'an, 710021, China.
Carbohydr Polym. 2019 Mar 15;208:372-381. doi: 10.1016/j.carbpol.2018.12.086. Epub 2018 Dec 27.
Cellulose nanofiber (CNF) has faced challenges toward advanced applications due to the poor water resistance, wet strength, and poor thermal stability. The fabrication methods, morphologies and dispersibility between CNF and aramid nanofiber (ANF) were compared. Then the mechanical strength, especially the retention of wet strength (RWS), optical property, UV shielding, wettability and thermal stability of CNF and ANF nanopapers were further investigated. The results show that ANF and ANF nanopaper have significant advantages in dispersibility, water resistance, wet strength, thermal stability and UV-blocking ability over the CNF and CNF nanopaper. Especially the RWS of ANF nanopaper reached ˜82.5%, which notably exceeded the CNF nanopaper of 1.1%. This work demonstrates that the ANF could be an ideal alternative to CNF for advanced nanocomposites. Transparent, flexible, ultra-strong ANF nanopaper with favorable water resistance and wet strength, as well as good UV-blocking property shows great potential in variety of advanced applications.
纤维素纳米纤维（CNF）由于其较差的耐水性、湿强度和较差的热稳定性，在先进应用方面面临挑战。比较了 CNF 和芳纶纳米纤维（ANF）的制备方法、形态和分散性。然后进一步研究了 CNF 和 ANF 纳米纸的机械强度，特别是湿强度保留率（RWS）、光学性能、UV 屏蔽、润湿性和热稳定性。结果表明，与 CNF 和 CNF 纳米纸相比，ANF 和 ANF 纳米纸在分散性、耐水性、湿强度、热稳定性和 UV 阻挡能力方面具有显著优势。特别是 ANF 纳米纸的 RWS 达到了约 82.5%，明显超过了 CNF 纳米纸的 1.1%。这项工作表明，ANF 可以作为 CNF 的理想替代品，用于先进的纳米复合材料。具有良好的耐水性和湿强度以及良好的 UV 阻挡性能的透明、柔韧、超强的 ANF 纳米纸在各种先进应用中具有巨大的潜力。
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