Ternary blends of polysulfone (PSF). polycarbonate (PC) Impact modifiers (I
RI) were prepared to improve the mechanical properties of PSF PC binary ble
nds. Two different core-shell impact modifiers, methyl methacrylate-butadie
ne ethylacrylate (MBE) and acrylonitrile-butadiene-styrene (ABS) terpolymer
s. were used, Morphology of the blends was very dependent on the matrix typ
e but independent of the IM type, For PSF matrix PC tends to encapsulate th
e IM. Whereas, for PC matrix, the IM tends to locate in PC matrix and thus
two distinct phases of PSF and IM are observed. The encapsulation of PC ont
o the IM in PSF matrix was verified from the model blends of PSF/ PC/SAN24
and PSF/PC/PMMA, where SAN24 and PMMA are corresponding to the shell of the
IM, respectively. Impact strengths of the blends with the IM were slightly
increased compared to PSF/C binary blends, but not significantly, This may
be the result of poor PSF/PC interfaces, which art: valid from their immis
cibility.