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Structure and Thermomechanical Properties of Tubes Based on Poly(L-lactide) Microfibers

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Abstract

Using X-ray diffraction, electron microscopy, and differential scanning calorimetry, the structure and mechanical properties of tubes based on poly (L-lactide) microfibers obtained by electrospinning from a dichloroethane solution and designed for implantation in small diameter blood vessels during prosthetics are studied. It is shown that freshly formed microfibers have an amorphous structure and their heat treatment at a temperature of 70–160°С is accompanied by crystallization of the polymer. Microfibers consist of lamellas ~20 × 200 nm in size, and their crystallites, the sizes of which depend on the processing temperature and amount to 25–34 nm, are characterized by the α-modification. The mechanical characteristics of the obtained tubes are considered.

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Funding

This study was supported by the Russian Science Foundation (project no. 19-73-30003).

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Authors and Affiliations

  1. Peter the Great St. Petersburg Polytechnic University, 195251, St. Petersburg, Russia

    I. P. Dobrovol’skaya, N. A. Zavrazhnykh, P. V. Popryadukhin, E. M. Ivan’kova & V. E. Yudin

  2. Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004, St. Petersburg, Russia

    I. P. Dobrovol’skaya, P. V. Popryadukhin, E. N. Popova, E. M. Ivan’kova, N. N. Saprykina & V. E. Yudin

  3. St. Petersburg State University, 199034, St. Petersburg, Russia

    I. A. Kasatkin

Authors
  1. I. P. Dobrovol’skaya
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  2. N. A. Zavrazhnykh
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  3. P. V. Popryadukhin
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  4. I. A. Kasatkin
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  5. E. N. Popova
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  6. E. M. Ivan’kova
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  7. N. N. Saprykina
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  8. V. E. Yudin
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Correspondence to I. P. Dobrovol’skaya.

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Dobrovol’skaya, I.P., Zavrazhnykh, N.A., Popryadukhin, P.V. et al. Structure and Thermomechanical Properties of Tubes Based on Poly(L-lactide) Microfibers. Polym. Sci. Ser. A 62, 354–360 (2020). https://doi.org/10.1134/S0965545X20040057

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  • DOI: https://doi.org/10.1134/S0965545X20040057

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