End-linked polybutadiene

FIGURE 5.14 The logarithm of the reduced retardation spectrum, Lp, shown as function of the logarithm of the reduced retardation time, A./uj , for the three urethane-end linked polybutadiene elastomers, (o) TB-1, ( ) TB-2, ( )TB-3. The response has been reduced to corresponding state temperatures of 74°C, 0°C, and 17°C, respectively, for the primary softening transition. 

FIGURE 18 Logarithm of the reduced shear creep compliance curves / (t) (in Pa ) for the three urethane-end linked polybutadiene elastomers displayed as a function of the logarithm of the reduced time t/a- (in seconds). The reference temperatures of reduction are chosen so that superposition is achieved at short times in the primary softening dispersion. (O) TB-1,74°C, ( ) TB-2,0°C, (0) TB-3,17°C. 

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