Thermoplastic polymers semi-crystalline, characteristic

All materials belong to the class of semi-crystalline thermoplastic polymers. Characteristic appearances of spherulitic microstructures of the polymers are shown in Figures 4 and 5 for the examples of POM and PA66. 

In order to make the best use of DMA data, it is useful to relate representative plots to the structural characteristics of different polymer families. Since this initial version of the database is devoted to rigid and semi-rigid thermoplastics, this discussion will focus on the two most important polymer families within this category - amorphous and semi-crystalline materials. Thermoplastic elastomer and a rigid crosslinked systems show significant contrast. 

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