Fig. 5

Measured and simulated 11B MAS NMR spectra of the as-received and annealed ISG a pristine fibers and b altered fibers, using the same peak positions and linewidths for all the spectra

Measured and simulated 11B MAS NMR spectra of the as-received and annealed ISG a pristine fibers and b altered fibers, using the same peak positions and linewidths for all the spectra