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Abstract <p>This paper presents a novel, contrary to the previously described, easy-to-implement method of hydrophobication of PET fabric via copolymerization of methyl methacrylate (MMA) and 2,2,3,3,4,4,4-heptafluoro-1-butyl acrylate (HFBA) in a single step. The relative simplicity of this method lies in the fact that MMA and HFBA are copolymerized on the surface of the PET fabric fibers using AIBN as a radical initiator at a temperature of 65&#xa0;°C in normal atmosphere. Because of osmotic pressure, the fabric is initially evenly impregnated with the mixture of these monomers, followed by keeping it in a reactor for 8&#xa0;h at 65&#xa0;°C. Different ratios of initial monomers were systematically tested, and it was found that, with all selected molar ratios of MMA to HFBA, an effect of PET fabric hydrophobicity was observed. With a molar ratio of <i>1:10</i>, a superhydrophobic effect with a wetting angle of <i>θ</i> ~ 150–155° was revealed. After removing unreacted monomers and low-molecular-weight oligomers using solvents (multiple washes with large amounts of acetone, chloroform, and ethyl alcohol), a permanent, stable fluorine-containing three-dimensional network with nanoscale and micron-scale structures (d ~ 350&#xa0;nm) remains on the PET fibers’ surface. Analysis of the coating surface using a scanning electron microscope (FE-SEM) and energy-dispersive X-ray spectroscopy (EDS-SEM), using autoemission, revealed a highly structured fluoropolymer at the micro and nanoscales. The superhydrophobic PET fabric produced in this way could serve as a model for the potential future use of this coating in large-diameter prosthetic vascular grafts.</p> Graphical abstract <p></p>

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Copolymerization of 2,2,3,3,4,4,4-heptafluorobutyl acrylate and methyl methacrylate in situ on Dacron fabric as a promising approach for the creation of superhydrophobic vascular prostheses

  • 期刊论文

  • 发表日期：

    2025年12月4日

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  • Victor I. Dyachenko,
  • Regina R. Salokhedinova,
  • Ivan S. Chaschin

摘要

Abstract

This paper presents a novel, contrary to the previously described, easy-to-implement method of hydrophobication of PET fabric via copolymerization of methyl methacrylate (MMA) and 2,2,3,3,4,4,4-heptafluoro-1-butyl acrylate (HFBA) in a single step. The relative simplicity of this method lies in the fact that MMA and HFBA are copolymerized on the surface of the PET fabric fibers using AIBN as a radical initiator at a temperature of 65 °C in normal atmosphere. Because of osmotic pressure, the fabric is initially evenly impregnated with the mixture of these monomers, followed by keeping it in a reactor for 8 h at 65 °C. Different ratios of initial monomers were systematically tested, and it was found that, with all selected molar ratios of MMA to HFBA, an effect of PET fabric hydrophobicity was observed. With a molar ratio of 1:10, a superhydrophobic effect with a wetting angle of θ ~ 150–155° was revealed. After removing unreacted monomers and low-molecular-weight oligomers using solvents (multiple washes with large amounts of acetone, chloroform, and ethyl alcohol), a permanent, stable fluorine-containing three-dimensional network with nanoscale and micron-scale structures (d ~ 350 nm) remains on the PET fibers’ surface. Analysis of the coating surface using a scanning electron microscope (FE-SEM) and energy-dispersive X-ray spectroscopy (EDS-SEM), using autoemission, revealed a highly structured fluoropolymer at the micro and nanoscales. The superhydrophobic PET fabric produced in this way could serve as a model for the potential future use of this coating in large-diameter prosthetic vascular grafts.

Graphical abstract