Abstract:Here we report the linear viscoelastic properties of amorphous poly(tetramethylene oxide) (PTMO), which is one of the key components in synthesizing segmented polyurethane (PU) elastomers. The temperature and molecular weight dependent viscoelastic behavior is investigated in detail by computing the shear relaxation modulus G(t) and the bulk relaxation modulus K(t), using the Green-Kubo relationship with correlation function. Our results provide new data for PTMO melt from the united atom model and also extend… Show more
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