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5707858 
Journal Article 
Effects of viscosity ratio and compatibilizers on the morphology and mechanical properties of polycarbonate/acrylonitrile-butadiene-styrene blends 
Yang, KM; Lee, SH; Oh, JM 
1999 
1 
Polymer Engineering and Science
ISSN: 0032-3888
EISSN: 1548-2634 
SOC PLASTICS ENGINEERS 
BROOKFIELD CENTER 
ANTEC '99: PLASTICS BRIDGING THE MILLENNIA, CONFERENCE PROCEEDINGS, VOLS I-III: VOL I: PROCESSING; VOL II: MATERIALS; VOL III: SPECIAL AREAS; 
39 
9 
1667-1677 
WOS:000082882600011 
A comprehensive experimental study was carried out to investigate the effects of 1) viscosity ratio, 2) temperature, and 3) compatibilizers an the morphology of bisphenol-A-polycarbonate/acrylonitrile-butadiene-styrene (PC/ABS). Blends were prepared by utilizing a co-rotating twin screw extruder and insitu morphology was obtained via the screw pullout technique. Plot of the PC/ABS viscosity ratio, eta(PC)/eta(ABS), versus the shear rate showed a gradual rise in the curve up to a critical shear rate and thereafter displayed asymptotic character. Contrary to premise, eta(PC)/eta(ABS), decreased with increasing temperature. This was elucidated by the melt viscosity of PC being thermally more sensitive than ABS over the temperature range investigated As expected, plot of the average domain size versus the viscosity ratio gave a concave up curve with a minimum when the viscosity ratio was close to unity Polymethylmethacrylate (PMMA) exhibited the greatest ABS domain size reduction, and annealed samples showed that it suppressed coal escence. 
1-56676-804-7 
57th Annual Technical Conference of the SPE on Plastics Bridging the Millennia (ANTEC 99) 
NEW YORK, NY