Using a DSC for analysing materials is a common technique. In this application, the Chip-DSC was used for measurements of PP granules. Different batches could be identified by melting enthalpy and behavior.
PP, the short form for polypropylene, is one of the most common thermoplastic polymers. It consists of monomer propylene, belongs to the group of polyefins, and its properties are largely similar to those of polyethylene, but are slightly harder and more heat-resistant (TM_PE ~ 100 °C – 130 °C; TM_PP ~ 150 °C – 170 °C ).
It is often used for labeling and packaging, but also for piping systems. The melting point is the easiest way to characterize PP. The onset point differs between ~ 10 K for different manufacturers.
