Extended Data Fig. 8: Mechanical properties and microstructural characterization of various wood samples.
From: Low-value wood for sustainable high-performance structural materials
SEM images of (a, d, g, j) cracked and (b, e, h, k) healed basswood, paulownia wood, cedar wood and pine wood, respectively. In all cases, the images show that cellulose regeneration leads to nanofibrils arranged at the fractured zone, in a chain-like interface structure. The corresponding mechanical properties are shown in (c, f, i, l) for the tensile stress–strain profiles of the natural and healed wood along the L-direction. For instance, 49 MPa and 154 MPa, respectively for basswood and likewise for paulownia wood (44.7 MPa and 152.3 MPa), cedar wood (28.1 MPa and 105.1 MPa) and pine wood (64.8 MPa and 86.6 MPa).
