Fig. 5

a Solid-state ¹³C CP/MAS NMR spectra of starting bleached birchwood Kraft fibers (KF, black line), PaLPMO9E-treated bleached birchwood Kraft fibers (KF-LPMO, green line), Ultra Turrax dispersed PaLPMO9E-treated fibers (NFC0, gray line) and PaLPMO9E-treated fibers submitted to mechanical shearing by the 400 μm chamber (NFC1, red line), by the 200 μm chamber (NFC2, purple line), and by the 100 μm chamber (NFC3, yellow line). The frame part of the NMR spectra corresponds to the C4 region. b Typical deconvolution of the C4 region from ¹³C CP/MAS NMR spectrum of the KF sample. Cr(Iα), Cr (Iβ) and Cr (Iα + β) correspond to crystalline cellulose forms; PCr corresponds to para-crystalline contribution; AS/IAS corresponds to accessible/inaccessible surfaces in the amorphous part of cellulose; and HC to hemicellulose contribution