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<p>This study investigates the preparation and characterization (morphological, thermal and mechanical) of electrospun nanofibrous mats based on the cellulose derivatives ethyl cellulose (EC-70 and EC-80) and cellulose acetate (CA). A binary solvent system of acetone and acetic acid (1:3 v/v) was employed to dissolve the polymers, in combination with polyethylene oxide (PEO) used as a processing aid to enhance electrospinnability and fiber uniformity. The results obtained revealed that EC-80 produced the most homogeneous, bead-free fibers, thanks to the highest viscosity of its solution, as revealed by rheological analysis. The uniformity in structure confers also increased tensile strength and elongation at break in EC-80-derived mats compared to EC-70 and CA counterparts. The thermogravimetric analysis (TGA) showed improved thermal stability of all electrospun mats with respect to the corresponding raw powders, characterized by delayed degradation onset and higher residual mass. Overall, these findings highlight the importance of solution viscosity and chain interactions in tailoring the properties of electrospun cellulose-based nanofibers for advanced material applications.</p>

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Fabrication and characterization of cellulose derivatives electrospun nonwoven mats

  • 期刊论文

  • 发表日期：

    2026年6月18日

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  • Asmita S. Thorat,
  • Adrianna Bardelli,
  • Simone Pettineo,
  • Maila Castellano,
  • Marina Alloisio,
  • Silvia Vicini

摘要

This study investigates the preparation and characterization (morphological, thermal and mechanical) of electrospun nanofibrous mats based on the cellulose derivatives ethyl cellulose (EC-70 and EC-80) and cellulose acetate (CA). A binary solvent system of acetone and acetic acid (1:3 v/v) was employed to dissolve the polymers, in combination with polyethylene oxide (PEO) used as a processing aid to enhance electrospinnability and fiber uniformity. The results obtained revealed that EC-80 produced the most homogeneous, bead-free fibers, thanks to the highest viscosity of its solution, as revealed by rheological analysis. The uniformity in structure confers also increased tensile strength and elongation at break in EC-80-derived mats compared to EC-70 and CA counterparts. The thermogravimetric analysis (TGA) showed improved thermal stability of all electrospun mats with respect to the corresponding raw powders, characterized by delayed degradation onset and higher residual mass. Overall, these findings highlight the importance of solution viscosity and chain interactions in tailoring the properties of electrospun cellulose-based nanofibers for advanced material applications.