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A novel and convenient preparation of antibacterial polyacrylonitrile nanofibers via post-modification using nitrile click chemistry and electrospinning

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Abstract

An efficient, novel and convenient method for the synthesis of modified polyacrylonitrile (PAN) with antibacterial property is reported. The modification of PAN was prepared by a nitrile click chemistry reaction with sodium azide (NaN3) and silver nitrate (AgNO3) as catalyst to yield antibacterial polymeric materials with 5-vinyltetrazole units. The results showed that 5-vinyltetrazole units had coordinated with silver ion (Ag+). Through the electrostatic spinning technology, the post-modification PAN nanofibers (PAN–Ag+ nanofibers) were prepared and the fibers were tested for their antimicrobial properties by the bacterial infection experiment. Afterwards, the antibacterial and stable performance of different proportions of silver ions in PAN nanofibers has been compared. The PAN–Ag+ nanofibers are characterized for mechanical and thermomechanical properties, structural analysis, appearance characteristics, as well as the antibacterial properties. And the nanofibers exhibit marvelous chemical stability according to the thermogravimetric analysis. When at 800 °C, the PAN decomposed about 60%, while the decomposition of the PAN–Ag+s was 40%. Based on the bacterial infection experiment, PAN–Ag+ nanofibers’ antibacterial properties were stronger with the increase of silver ions, such as the number of bacteria clone was smaller and the bacteriostatic ring was larger. Hence, with combination of silver ions, the final polymers show strong antimicrobial properties.

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Acknowledgements

The finance was supported by the National Natural Science Foundation of China (Nos. 21404052, 21404051 and 51573075), the Natural Science Foundation of Shandong Province (No. ZR2014BQ016), the Project of Shandong Province Higher Educational Science (No. J16LC20) and Technology Program and the Program for Scientific Research Innovation Team in Colleges and universities of Shandong Province.

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  1. School of Chemistry and Materials Science, Ludong University, Yantai, 264025, China

    Wen-xiang Wang, Ye Liu, Yu-xue Wang, Hou Chen & Liang-jiu Bai

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  1. Wen-xiang Wang
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  2. Ye Liu
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  3. Yu-xue Wang
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  4. Hou Chen
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  5. Liang-jiu Bai
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Correspondence to Hou Chen or Liang-jiu Bai.

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Wang, Wx., Liu, Y., Wang, Yx. et al. A novel and convenient preparation of antibacterial polyacrylonitrile nanofibers via post-modification using nitrile click chemistry and electrospinning. Chem. Pap. 72, 191–200 (2018). https://doi.org/10.1007/s11696-017-0270-0

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  • DOI: https://doi.org/10.1007/s11696-017-0270-0

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