Nishi-Wang plots

Fig. 10.25 Nishi-Wang plot for semicrystalline PSMA14/ PCL blends (Gouveia etal. 2011)...

The negative values found for B in the case of PEO-PU blends support the idea that these polymers are miscible in the molten state and the fact that the intercept of the Nishi-Wang plot is close to zero indicates that entropic effects contribute little to B. 

PSMA/PCL blends were analyzed by Gouveia et al. (2011) using Nishi-Wang equation. They plotted (1/T°nib 1/T°m) against < ) a and resulted in a straight line with slope proportional to % ab and zero y-intercept (Fig. 10.25). 

Melting point depressions in isothermally crystallised blends were analysed in terms of the Nishi-Wang equation (Eq. 10) [40] using equilibrium values of the melting point determined from Hoffman-Weeks plots melting points were determined by DSC and optical microscopy [137]. Values of the melting-point... 

The -intercept obtained from the linear plot between equilibrium melting point depression (AT °) and the square of the volume fraction of the amorphous component (v ) after Equation (6) (described in detail in Miscibility) developed by Nishi and Wang, (1975) for both the blends is close to zero as shown in Figure 19 suggesting that entropy effect has insignificant influence on the x -... 

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