Fig. 2: The evolution of long-period structure in BS-UHMWPE under stress fields.

a Laorenz-corrected one-dimensional SAXS intensity distribution curve; b its projection (b): the vertical projection; c One-dimensional autocorrelation function of UHMWPE film at a strain of 450%; d Stress–strain curve of UHMWPE film during the stretching process (As part of a series of related studies, the mechanical curves from the in-situ synchrotron small-angle scattering tensile experiments have already been presented in our previous publication¹⁴); e Fiber crystallite length and misorientation angle obtained by Ruland-steak fitting; f DSC melting enthalpy curves (Heat flow vs temperature) of UHMWPE material at different stretching ratios, The small figure shows the phase transition temperature points at each strain rate.