PHB/PEN/PET blends

Figure 20.3 Polarized micrographs of the PHB/PEN/PET blends for various compositions (mol %)...

Figure 20.6 The glass transition ( ) and melting ( ) temperatures as a function of PHB content for the PHB/PEN/PET blends...

Figure 20.7 The effect of pre-heating temperatures and blend composition on the melting temperatures of the PHB/PEN/PET blends , 260°C O, 280 °C A, 300 °C...

Figure 20.9 The 1H-NMR spectrum at 300 MHz, showing the assignments of the absorptions for the PHB/PEN/PET blends dissolved in cf-trifluoroacetic acid [21]. From Kim, S. H., Kang, S. W., Park, J. K. and Park, Y. H., J. Appl. Polym. Sci., 70, 1065-1073 (1998), Copyright (1998, John Wiley Sons, Inc.). This material is used by permission of John Wiley Sons, Inc...

The log G versus log G" plots of the various PHB/PEN/PET blends are presented in Figure 20.16, where and the slopes of the plots are measures of the homogeneity of the system [35], If the slope is zero, then the blend system is heterogeneous, and if it approaches 2, it means that the blend system is tending to a homogeneous system. The slopes of the plots in Figure 20.16 increase with the addition of excess PHB to the blend system. 

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