Differential Scanning Calorimetry, DSC, is one of the most frequently used thermal analysis methods for quality control. It enjoys great popularity, especially because it provides extensive information on material properties such as Temperatura di transizione vetrosaLa transizione vetrosa è una delle più importanti proprietà chimico-fisiche dei materiali amorfi e semi-cristallini, come, ad esempio, vetri, metalli (amorfi), polimeri, ingredienti farmaceutici e alimentari e definisce l’intervallo di temperatura in cui le proprietà meccaniche die materiali variano da duro e fragile a più morbido, malleabile o gommoso.glass transition, melting or crystal-to-crystal conversion, and because it is easy and fast to use.
Any DSC measurement on polymers should include three measurement runs consisting of two heating measurements, between which the sample is cooled at a controlled rate. Each measurement curve can give different insights and information about the sample. If the second heating curves of two materials are similar, quality control would conclude that it is the same material. However, additional tests with the Kinexus rotational rheometer can show that these materials differ in their molecular weight.
PEEK (polyether ether ketone) is used for high-performance applications at high temperatures, but due to its good combination of properties, it is also becoming increasingly established in the medical field.