Fig. 3: Regulation of mechanical properties of MXene/PEDOT:PSS/polyrotaxane (PPM) fibers by micropores.
From: Biomimetic strong and tough MXene fibers with synergy between micropores and dual interfaces
Representative stress-strain curves of (a) MXene/PEDOT:PSS (PeM) and (b) PPM fibers fabricated under hot-pressing pressures of 0 kPa, 0.2 kPa, 1 kPa, and 3 kPa, respectively. c Comparison of the tensile strength, toughness, and ductility of PPM fibers with porosities of 28.5%, 20.8%, 16.2%, and 11.8%. The error bars represent the mean ± standard deviation (n = 5 independent experiments). d Proposed mechanism wherein the micropores provided room for MXene sliding in PPM fibers. FEM simulations of stress distribution in lamellar and porous MXene fiber with (e) a slidable interface and (f) a non-slidable interface when subjected to a uniaxial tensile load.
