Abstract
The phase behavior in 50/50 wt% binary random copolymer blends of poly(vinyl chloride-co-vinyl acetate) and poly(methyl-co-hexyl acrylate) was studied. The blends had a miscibility window and exhibited LCST behavior. The miscibility was determined as a function of composition of each copolymer and displayed in composition-composition diagram [C-C diagram]. The segmental interaction parameters between monomer units comprising the blends were calculated by applying the mean field theory expression to the C-C diagram. Using the segmental interaction parameters, blend interaction parameters which represent the miscibility of the blend system quantitatively, were also estimated. From the calculated values, it was found that the segmental interactions of vinyl acetate unit with other units were strongly repulsive and had significant effect on the miscibility.
Similar content being viewed by others
Article PDF
References
R. P. Kambour, J. T. Bendler, and R. C. Bopp, Macromolecules, 16, 753 (1983).
G. ten Brinke, F. E. Karasz, and W. J. MacKnight, Macromolecules, 16, 1827 (1983).
T. Shiomi, F. E. Karasz, and W. J. MacKnight, Macromolecules, 19, 2274 (1986).
T. Shiomi, F. E. Karasz, and W. J. MacKnight, Macromolecules, 19, 2644 (1986).
J. M. G. Cowie, V. M. C. Reid, and I. J. McEwen, Polymer, 31, 486 (1990).
J. M. G. Cowie, V. M. C. Reid, and I. J. McEwen, Polymer, 31, 905 (1990).
H. S. Kang, W. J. MacKnight, and F. E. Karasz, Polym. Prepr., Am. Chem. Soc., Div. Polym. Chem., 28, No. 2, 134 (1987).
W. S. Huh and F. E. Karasz, Polym. Mater. Sci. Eng., 60 792 (1989).
J. M. G. Cowie, E. M. Elexpuru, and I. J. McEwen, J. Polym. Sci., B, Polym. Phys., 29, 407 (1991).
M. Nishimoto, H. Keskkula, and D. R. Paul, Macromolecules, 23, 3633 (1990).
B. S. Jin and S. C. Kim, Polym. Adv. Technol., to be published.
J. F. Rabek, “Experimental Methods in Polymer Chemistry,” John Wiley & Sons Ltd. New York, N.Y., 1980.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Jin, B., Kim, S. & Lee, D. Miscibility in Copolymer Blends of Poly(vinyl chloride-co-vinyl acetate) and Poly(methyl-co-hexyl acrylate). Polym J 24, 1189–1195 (1992). https://doi.org/10.1295/polymj.24.1189
Issue Date:
DOI: https://doi.org/10.1295/polymj.24.1189