Abstract
Volume flow of 1,4 cis polybutadiene (1,4 cis PB) of ¯M n =311.900,T g =156 K, andT m =266 K, has been measured.
Elastic modulus of the elastic wave, longitudinal volume viscosity, initial longitudinal volume viscosity, and retardation times are described at compression rates of ca. 1.0 to 200.0×10−5 s−1, and at temperatures of 293 K to 373 K, and pressures up to 150 MPa.
Longitudinal volume viscosity decreases with increasing compression rate, and with decreasing volume deformation, the behavior being in all cases a typical non-equilibrium one. Longitudinal volume viscosity decreases with increasing temperature (except at 293 K), the volume flow activation energy being of about 18.2 KJ/mol.
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Aleman, J.V. Longitudinal volume viscosity of 1,4 cis polybutadiene. Colloid & Polymer Sci 266, 975–983 (1988). https://doi.org/10.1007/BF01428805
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DOI: https://doi.org/10.1007/BF01428805