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Rheological and morphological behaviour of blends of polycarbonate with unmodified and maleic anhydride grafted ABS
Sunder Balakrishnan, N. R. Neelakantan
Published in Elsevier Sci Ltd, Exeter
1998
Volume: 39
   
Issue: 23
Pages: 5765 - 5771
Abstract
Blends of polycarbonate (PC) with ABS and polycarbonate with maleic anhydride grafted ABS (MABS) were prepared by melt blending, using a single-screw extruder with special mixing head over the whole range of compositions. The rheological behaviour was determined using a capillary rheometer. The melt viscosity-composition curves for PC/ABS blends showed negative deviation from the rule of mixture with minimum values over a wide range from 25 to 65 wt.% PC. These curves for PC/MABA also showed negative deviation, but the deviation is less than that for PC/ABS blends. Addition of ABS or MABS to PC improves the processibility. Morphological studies of these blends were done using a scanning electron microscope (SEM). Morphology of unmodified blends showed coarse dispersion, whereas that of the modified blends showed fine and lamellar dispersion.Blends of polycarbonate (PC) with ABS and polycarbonate with maleic anhydride grafted ABS (MABS) were prepared by melt blending, using a single-screw extruder with special mixing head over the whole range of compositions. The rheological behaviour was determined using a capillary rheometer. The melt viscosity-composition curves for PC/ABS blends showed negative deviation from the rule of mixture with minimum values over a wide range from 25 to 65 wt.% PC. These curves for PC/MABS also showed negative deviation, but the deviation is less than that for PC/ABS blends. Addition of ABS or MABS to PC improves the processibility. Morphological studies of these blends were done using a scanning electron microscope (SEM). Morphology of unmodified blends showed coarse dispersion, whereas that of the modified blends showed fine and lamellar dispersion.
About the journal
JournalData powered by TypesetPolymer
PublisherData powered by TypesetElsevier Sci Ltd, Exeter
ISSN00323861
Open AccessNo
Concepts (19)
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    Abs resins
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    Blending
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    Composition effects
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    Degradation
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    Graft copolymers
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    Morphology
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    Plastics extruders
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    POLYCARBONATES
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    Rheology
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    Rheometers
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    Scanning electron microscopy
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    Viscosity of liquids
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    CAPILLARY RHEOMETERS
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    Maleic anhydride
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    REACTIVE BLENDING
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    SINGLE-SCREW EXTRUDERS
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    Polymer blends
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    Blend
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    Polymer