“…Polyethylene is known for its three kinds of relaxation processes in the entire temperature range as is seen in dynamic mechanical thermal (DMTA),7–14 dielectric,15, 16 and nuclear magnetic (NMR) experiments,10, 14, 17 With respect to, e.g., Zamfirova et al,8 UHMWPE exhibits the γ, β, and α relaxations, characterized by a loss modulus ( E ″) maximum at −113 to −111°C, −4°C, and 57–58°C, respectively, as determined from tensile DMTA measurements at an angular frequency (ω = 2π f ) of 18.8 Hz.…”