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Improving mechanical properties of electrospun cellulose acetate nanofiber membranes by cellulose nanocrystals with and without polyvinylpyrrolidone

  • Lang Jiang
  • Ke Li
  • Huiyu Yang
  • Xin Liu
  • Wei LiEmail author
  • Weilin XuEmail author
  • Bo DengEmail author
Original Research


Good mechanical properties of electrospun nanofiber membranes are essential for their successful application for commercial applications by providing sufficient mechanical strength to withstand severe operational conditions and guarantee structural integrity. Cellulose acetate nanofiber membranes modified with both polyvinylpyrrolidone (PVP) coated cellulose nanocrystals (CNC@PVP) and pristine CNCs were prepared using the reinforcement concentration varying from 0 to 0.135 wt%. The stability of dispersed CNCs and CNC@PVP in dimethylacetamide (DMAc) were compared visually. The apparent viscosity as a function of shear rate was compared for both CNCs and CNC@PVP in electrospun solution. Internal structure of obtained nanofiber membranes were compared using scanning electron microscopy to reveal the nanofibers diameter and its distribution. FTIR was used to disclose the different chemical structure of the two groups of membranes. Mechanical properties of nanofiber membranes were also compared. Finally, the thermogravimetric analysis was utilized to compare the thermal stability of different nanofiber membranes.


Acetate cellulose Cellulose nanocrystals Polyvinylpyrrolidone Mechanical properties 



This work was supported by the National Natural Science Foundation of China (Grant 51773158); and the Key Laboratory of Textile Fiber&Product (Wuhan Textile University) (Grant FZXW2017013), Ministry of Education, for their financial supports.


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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.State Key Laboratory of New Textile Materials and Advanced Processing TechnologiesWuhan Textile UniversityWuhanPeople’s Republic of China
  2. 2.International Joint Cancer InstituteThe Second Military Medical UniversityShanghaiPeople’s Republic of China

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