A thin layer of fibers was attached to the SEM sample holder with double sided carbon tape and sputter coated with Au/Pd to minimize charging. The coated samples were imaged by Hitachi S-4500 SEM at an accelerating voltage of 15 kV. Several low and high magnification images were
Thiol–ene chemistry was harnessed to enable production
of
thermochemically stable thermoset fibers containing 50–87 wt
% acrylated epoxidized soybean oil and 49–72% biobased carbon
without using solvent or heat. In this demonstration, the fibers were
made by simultaneous electrospinning and photocuring of a liquid monomer
mixture, which could be translated to other fiber manufacturing processes
such as melt blowing or Forcespinning. Scanning electron micrographs
illustrate the fiber quality and an average diameter of about 30 μm.
Photochemical conversion kinetics of functional groups during light
exposure were measured by real-time Fourier transform infrared spectroscopy,
providing insight into the advantages of using high-functionality
monomers and thiol–ene chemistry in this application.
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