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Fabrication of ultrafine fibers of poly(γ-glutamic acid) and its derivative by electrospinning

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Summary

Poly(γ-glutamic acid) (PGA) was successfully electrospun by the addition of poly(ethylene glycol) (PEG) and Triton X-100 in its aqueous solution to produce the PGA non-woven mat of the ultrafine fibers. The average fiber diameter was in the range between 200 nm and 2 μm. The fiber mat was quickly soluble in water due to the large surface area of the fibers. The electrospinning of PGA butyl ester with the esterification degree of 61% in 1,1,1,3,3,3-hexafluoro-2-propanol gave the water-insoluble nanofiber mat.

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Acknowledgments

This work was partly supported by Program for Japan-Korea Joint Research Project, JSPS and KOSEF, and Regional New Consortium Projects, METI, Japan. We also thank Mr. Y. Kunihiro, Mr. T. Mino, and Ms. M. Higasa for screening of the electrospinning conditions and sample preparation.

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Authors and Affiliations

  1. Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan

    Eun-Hye Lee & Hiroshi Uyama

  2. Department of Polymer Science and Engineering, Kumoh National Institute of Technology, 1 Yangho-dong, Kumi, Kyungbuk, 730-701, Korea

    Oh Hyeong Kwon

  3. Department of Bio and Nanochemistry, Kookmin University, 861-1 Chongnung-dong, Songbuk-gu, Seoul, 136-702, Korea

    Moon-Hee Sung

  4. Bioleaders Corp., 559 Yongsan-dong, Yuseong-gu, Daejeon, 305-500, Korea

    Moon-Hee Sung

Authors
  1. Eun-Hye Lee
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  2. Hiroshi Uyama
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  3. Oh Hyeong Kwon
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  4. Moon-Hee Sung
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Correspondence to Hiroshi Uyama.

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Lee, EH., Uyama, H., Kwon, O.H. et al. Fabrication of ultrafine fibers of poly(γ-glutamic acid) and its derivative by electrospinning. Polym. Bull. 63, 735–742 (2009). https://doi.org/10.1007/s00289-009-0112-5

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  • DOI: https://doi.org/10.1007/s00289-009-0112-5

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