Ákos György Juhász, Monika Nanys, Balázs Pinke, Alexandre Fadel, Marcin Godzierz, Krisztina Juriga‐Tóth, Kolos Molnár, Dávid Juriga, Angéla Jedlovszky‐Hajdú

Formation of Three‐Dimensional Polysuccinimide Electrospun Fiber Meshes Induced by The Combination of CaCl2 and Humidity

  • Materials Chemistry
  • Polymers and Plastics
  • Organic Chemistry

AbstractEven though electrospinning is getting more and more attention, the preparation of three‐dimensional (3D) nanofibrous meshes is still a big challenge that limits the application of electrospun materials, especially in tissue engineering. To overcome this problem several solutions have been introduced but most of them focus on the postprocessing of the electrospun meshes. In this paper, we present a straightforward novel method that utilizes the joint effect of the addition of CaCl2 and the relative environmental humidity (RH), which can induce the random 3D formation of polysuccinimide (PSI) electrospun fibers with different such as wrinkled or ribbon‐like structures. Although the effect of humidity and inorganic salt additives on the micro‐ and macrostructure of electrospun fibers is known, the connection between the two in this manner has never been presented. To investigate the effect, fibers with different PSI and CaCl2 concentrations at different humidity RH levels were prepared, and their microstructure was visualized with high‐resolution scanning electron microscopy (SEM). To reveal the nature of the interaction between the polymer and the CaCl2 Fourier‐transformed infrared (FTIR), X‐ray diffraction (XRD), and thermogravimetry (TGA) measurements were carried out and 3D nanofibrous structures were obtained.This article is protected by copyright. All rights reserved

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