Segregation relaxation maxima

Only the 2,6-T-2P polyurethanes exhibited a relaxation associated with crystallization and later melting of the soft segments. The position of the crystallization maximum was estimated from the location of tan(8)m lx and was somewhat difficult to characterize accurately because of extreme overlapping of the a9 and ac relaxations, as evident in Figure 10. Melting occurred over the region 2°-7°C in all samples. Phase segregation in 2,6-T-2P samples was well developed to the point that the... 

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