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Fabrication and characterization of differentiated aramid nanofibers and transparent films

  • Jingjing Luo
  • Meiyun Zhang
  • Bin Yang
  • Guodong Liu
  • Shunxi Song
Original Article

Abstract

Aramid nanofibers (ANFs) frequently are employed as versatile building blocks for constructing high-performance nanocomposites due to its structural and performance superiority. In this paper, the different ANFs and ANF films derived from the typical aramid yarns, chopped fiber, pulp fiber and fibrid fiber, respectively, were fabricated through deprotonation with potassium hydroxide in dimethyl sulphoxide, protonation with deionized water and vacuum-assisted filtration. The physical tests such as tensile test, ultraviolet transmittance and absorbance, thermogravimetric analysis were executed to evaluate and contrast the thermodynamic and optical performances of these differentiated ANFs and ANF films. The analytical results suggested that ANFs films prepared by the different forms of aramid macrofibers presented with differentiated properties such as mechanical behaviors, transparencies and flexibilities. And also it was found that the oversized nanofiber in length led to the formation of flocculation which was adverse for ANFs films in the formation of high strength. Whereas, small diameter just facilitated for the achievement of high stiffness and transparency. By contrast, the ANFs films made from chopped nanofiber, with aspect ratio of 200–500, exhibited good transparency, thermal stability and mechanical properties with transmittance value of 83%, TG10% around 521 °C, ultimate strength (σ) of 103.41 MPa, stiffness (E) of 4.70 GPa and strain at break of 5.56%. This work offers an alternative nanoscale building block as an effective nanofiller for preparing high-performance nanocomposites with different requirements in the potential fields such as transparent coating and flexible electrode or display materials, battery separator and microporous membrane.

Keywords

Aramid nanofibers fabrication Deprotonation Transparent film Characterization 

Notes

Acknowledgements

The authors sincerely appreciated the financial support from the National Key Research and Development Program (2017YFB0308300) and State Key Laboratory for Modification of Chemical Fibers and Polymers Materials (LK1601).

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, National Demonstration Center for Experimental Light Chemistry Engineering Education, College of Bioresources Chemical and Materials EngineeringShaanxi University of Science and TechnologyXi’anPeople’s Republic of China
  2. 2.State Key Laboratory for Modification of Chemical Fibers and Polymers MaterialsDonghua UniversityShanghaiPeople’s Republic of China
  3. 3.School of Science, Key Laboratory of Space Applied Physics and Chemistry of Ministry of EducationNorthwestern Polytechnical UniversityXi’anPeople’s Republic of China
  4. 4.College of Bioresources Chemical and Materials Engineering, National Key Research and Development ProgramShaanxi University of Science and TechnologyXi’anPeople’s Republic of China

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