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Carbohydr Polym. 2019 Oct 1;221:195-201. doi: 10.1016/j.carbpol.2019.06.008. Epub 2019 Jun 6.

Facile and quick formation of cellulose nanopaper with nanoparticles and its characterization.

Author information

1
Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
2
Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China; Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, China.
3
Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China; Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, China. Electronic address: zhangxiangzhi@zjlab.org.cn.
4
Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China; Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, China. Electronic address: linjinyou@zjlab.org.cn.
5
Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China; Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, China. Electronic address: tairenzhong@zjlab.org.cn.

Abstract

Cellulose nanofibrils (CNF) is a suitable functional material as its lightweight, huge availability and biodegradable advantages. A direct-evaporation method was employed to prepare the CNF nanopapers with or without Fe3O4 and TiO2 nanoparticles (NPs) in the form of films, which is more facile and efficient in comparison with the methods of vacuum-filtration and cast drying. A combination of three-dimensional (3D) focal stacks and dual-energy imaging method was firstly used to characterize the CNF nanopapers embedded with Fe3O4 and TiO2 NPs, where the locations of the NPs can be clearly and exactly distinguished. Furthermore, the thickness, transparency, magnetism and tensile properties of the CNF nanopapers were characterized. This work shows a facile method for the preparation of CNF nanopapers with or without addition. More importantly, the combination of focal stacks and dual-energy imaging method offers a superior means of characterizing the spatial structures and 3D elemental visualization.

KEYWORDS:

3D characterization; Cellulose nanofibrils; Cellulose nanopaper; Dual-energy; Focal stacks

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