Polymer Fraction Quantification via DSC
The performance of polymer blends depends on their composition, making accurate fraction analysis essential. This study demonstrates Differential Scanning Calorimetry (DSC) as a practical method for determining polymer content, using LDPE/CaCO₃ blends prepared in a Brabender Measuring Mixer 50 (W50 EHT) and analyzed with a Julia DSC 500.
The high request of new materials characterizing our
times brings the polymer industry to find innovative
solutions mixing different polymers in defined fractions
to obtain blends with different, diverse properties. The
need to quantify the respective fractions can be found
in better synthetic control and proper tuning of the
properties. Extrusion and mixing are common
techniques used for the continuous and discontinuous
production of this kind of polymeric blends. Different
examples can be mentioned, such as miscible blends,
like polystyrene and poly(phenylene oxide) (PS/PPO)
or polyvinyl chloride and poly(methyl methacrylate)
(PVC/PMMA), and immiscible blends as polycarbonate
(PC) with PMMA. Differential scanning calorimetry
(DSC) can be a valuable technique for the
quantification of the polymeric fractions in hybrid
samples.
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