1983 Volume 40 Issue 10 Pages 661-666
Static light scattering measurements were carried out on concentrated tetrahydrofuran solutions of the copolymer blends. The copolymer blends were made of sytrene-maleic anhydride random copolymer (SMA) and acrylonitrile-styrene random copolymer (AS). Using Debye-Bueche plots and Guinier plots, correlation distances (a) and radii of gyration (RG) were determined from the experimental results of light scattering. The compatibility of the copolymer blends is discussed on the basis of the composition dependences of the phase separation in solutions and in casting films. The phase separation behavior was observed by the visual inspection of the turbidity. If the styrene contents (mole fractions) of both SMA and AS copolymers are nearly equal, the copolymer blends of SMA/AS are compatible over almost the entire composition of the blends.
