Phase Equilibrium of the Ternary System Composed of Polystyrene/Poly(n-butyl methacrylate)/Cyclohexane

Lee KH; Lee DC

Korea Polymer Journal, Vol.2, No.1, 16-22, April, 1994

The phase behavior of three component system composed of well fractionated polystyrene, poly(n-butyl methacrylate), and cyclohexane was investigated by means of turbidimetry and gel permeation chromatography. Variations of the polymer concentration and the temperature lead the ternary system to be separated into two phases. Cloud point curves were determined as the function of mixing ratio of the two polymers, molar mass, temperature, and concentration. Equilibrium phase diagrams and tie lines for a number of partially miscible systems were constructed for the temperature range of 10.9-26.7℃ under atmospheric pressure. The polymer-polymer interaction parameters calculated based on the Flory-Huggins theory by using the experimentally obtained phase composition data and the polymer-solvent interaction parameters of binary systems, were found to be in the range of -0.0761 ∼ 0.1900. All the experimental results lead to a conclusion that the difference of the molar mass between the two polymers is the most important factor in enhancing the miscibility of the incompatible polymers.

[References]

Huggins ML, J. Chem. Phys., 9, 440 (1941)
Flory PJ, J. Chem. Phys., 10, 51 (1942)
Tompa H, Polymer Solutions, Butterworths, London (1956)
Scott RL, J. Chem. Phys., 17, 27 (1949)
Allen G, Gee G, Nicholson P, Polymer, 1, 56 (1960)
Narasimhan V, Huang RYM, Burns CM, J. Polym. Sci. B: Polym. Phys., 21, 1993 (1983)
Kumaki J, Macromolecules, 19, 763 (1986)
Tseng HS, Lloyd DR, Ward TC, J. Polym. Sci. B: Polym. Phys., 25, 325 (1987)
Perrin DD, Armarego WLF, Purification of Laboratory Chemicals, 3rd ed., Pergamon Press, London (1988)
Huggins ML, J. Am. Chem. Soc., 64, 2716 (1942)
Lee DD, Lee DC, Polym.(Korea), 15(3), 274 (1991)
Hashizume J, Teramoto A, Fujita H, J. Polym. Sci. B: Polym. Phys., 19, 1405 (1981)
Tong Z, Einaga Y, Miyashita H, Fujita H, Macromolecules, 20, 1888 (1987)
Tong Z, Einaga Y, Kitagawa T, Fujita H, Macromolecules, 22, 450 (1989)
Camps A, Celda B, Mora J, Figueruelo JE, Polymer, 25, 1479 (1984)
Stockmayer WH, Fixman MJ, J. Polym. Sci. C: Polym. Lett., 1, 137 (1963)
Tseng HS, Lloyd DR, Ward TC, J. Polym. Sci. B: Polym. Phys., 29, 161 (1991)
Scott RL, J. Chem. Phys., 17, 279 (1949)

[Referenced By]

[1] Huggins ML, J. Chem. Phys., 9, 440 (1941)

[2] Flory PJ, J. Chem. Phys., 10, 51 (1942)

[3] Tompa H, Polymer Solutions, Butterworths, London (1956)

[4] Scott RL, J. Chem. Phys., 17, 27 (1949)

[5] Allen G, Gee G, Nicholson P, Polymer, 1, 56 (1960)

[6] Narasimhan V, Huang RYM, Burns CM, J. Polym. Sci. B: Polym. Phys., 21, 1993 (1983)

[7] Kumaki J, Macromolecules, 19, 763 (1986)

[8] Tseng HS, Lloyd DR, Ward TC, J. Polym. Sci. B: Polym. Phys., 25, 325 (1987)

[9] Perrin DD, Armarego WLF, Purification of Laboratory Chemicals, 3rd ed., Pergamon Press, London (1988)

[10] Huggins ML, J. Am. Chem. Soc., 64, 2716 (1942)

[11] Lee DD, Lee DC, Polym.(Korea), 15(3), 274 (1991)

[12] Hashizume J, Teramoto A, Fujita H, J. Polym. Sci. B: Polym. Phys., 19, 1405 (1981)

[13] Tong Z, Einaga Y, Miyashita H, Fujita H, Macromolecules, 20, 1888 (1987)

[14] Tong Z, Einaga Y, Kitagawa T, Fujita H, Macromolecules, 22, 450 (1989)

[15] Camps A, Celda B, Mora J, Figueruelo JE, Polymer, 25, 1479 (1984)

[16] Stockmayer WH, Fixman MJ, J. Polym. Sci. C: Polym. Lett., 1, 137 (1963)

[17] Tseng HS, Lloyd DR, Ward TC, J. Polym. Sci. B: Polym. Phys., 29, 161 (1991)

[18] Scott RL, J. Chem. Phys., 17, 279 (1949)