Characterizing polymer blends can sometimes present a significant challenge for a single technique and the best way is a combination of techniques.In this application note, we discuss a PA6-PET blend which was initially characterized via Raman Spectroscopy at a 500nm spatial resolution.Subsequent thermal characterization at a sub-100nm spatial resolution via the nano-TA revealed a lot of interesting details and more complex sub-structures that were not available from the Raman study and helped in obtaining a detailed understanding of the blend.