Prediction from thermal transition enthalpies

The numerical values attached and are h, from equations [5.2.17] and [5.2.18], respectively. The numerical values in parentheses were calculated using equation [5.2.17] with the second term of Tg Sg ° - (RlnZ )/x.  

For atactic polypropylene (aPP) that could be treated as a binary random copolymer composed of meso and racemi dyads, 8p is predicted as follows. 

Further, is obtained from equation [5.2.17], but Zg is the conformational partition funetion for a copolymer with at Tg and Zq is the eomponent conformational partition 

using equations [5.2.19] and [5.2.20], 5p for binary random copolymers, including aPP, could be predieted. 

AC° the difference in liquid Cp and glass Cp before and after the glass transition  

Brundrup and E. H. Immergut, Polymer Handbook, Wiley, New York, 1989. 

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In order to obtain easily the exact value of 5 at a temperature, T, the possibility of 8p prediction from the thermal transition behaviors such as the glass transition and the melting has been discussed. Consequently, it was found that the sum of flieir transition enthalpies gave ho in equation [5.2.1] approximately ... 

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