Journal article
Miscibility evolution of polycarbonate/polystyrene blends during compounding : Miscibility Evolution of PC/PS Blends
The miscibility evolution of polycarbonate/polystyrene (PC/PS) blends during the compounding process in three blending methods of industrial relevance, namely melt blending, remelt blending in a twin-screw extruder and third melt blending in an injection molding machine, was investigated by measuring their glass transition temperatures (T-g) and their specific heat increment (DeltaC(p)).
Differential scanning calorimetry (DSC) was used to examine nine blend compositions. Shifts in glass transition temperature (T-g) of the two phases in melt-mixed PC/PS blends suggest partial miscibility of one polymer in the other. The observed solubility strongly depends on blend composition and blending method.
The T-g measurements showed maximum mutual solubility around 50/50 composition. The miscibility of PC/PS blended after the third stage (melt injection molding) was higher than that after the first stages (melt extrusion) and the second stages (remelt extrusion).
Language: | English |
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Publisher: | Wiley Subscription Services, Inc., A Wiley Company |
Year: | 2002 |
Pages: | 961-968 |
ISSN: | 00323888 and 15482634 |
Types: | Journal article |
DOI: | 10.1002/pen.11005 |
ORCIDs: | Almdal, Kristoffer |