| Issue |
Korean Journal of Chemical Engineering,
Vol.19, No.1, 114-119, 2002
Vol.19, No.1, 114-119, 2002
The Effect of Hydrogen Bonding on the Phase Behavior of Poly(ethylene-co-acrylic acid)-Ethylene-Cosolvent Mixtures at High Pressures
Experimental cloud-point data to 260 oC and 2,500 bar are reported to demonstrate the impact of two cosolvents, acetone and methanol, on the phase behavior of polyethylene, poly(ethylene-co-2.4 mol% acrylic acid) (EAA2.4), poly(ethylene-co-3.9 mol% acrylic acid) (EAA3.9), poly(ethylene-co-6.9 mol% acrylic acid) (EAA6.9), and poly(ethylene-co-9.2 mol% acrylic acid) (EAA9.2) in ethylene. In pressure-temperature (P-T) space, the miscibility of
EAA copolymers in ethylene decreases significantly with temperature and with increasing acrylic acid content of EAA due to self-association of the acrylic acid segments. Acetone and methanol, both dramatically enlarge the solubility of EAA copolymers due to the hydrogen bonding with acrylic acids in the EAA. At low concentrations, methanol is a better cosolvent than acetone. However, the impact of methanol diminishes rapidly with increasing methanol concentration
once all the acrylic acids in the EAA are hydrogen bond with methanol molecules.
[References]
- Baker G, "Modern Plastics," Chemical Week Associates, NY, Mid October, 1991
- Boysen RL, "Olefin Polymers (High Pressure Polyethylene)," In M. Grayson (Ed.), Kirk-Othmer Encyclopedia of Chemical Technology, New York, John Wiley & Sons, 1981
- Brentin RP, "Modern Plastics Encyclopedia," Chemical Week Associates, NY, 1988
- Earnest TR, MacKnight WJ, Macromolecules, 13, 844, 1980
- Gregg CJ, Stein FP, Radosz M, Macromolecules, 27(18), 4972, 1994
- Gregg CJ, Stein FP, Radosz M, Macromolecules, 27(18), 4981, 1994
- Hasch BM, Meilchen MA, Lee SH, McHugh MA, J. Polym. Sci. B: Polym. Phys., 31, 429, 1993
- Hasch BM, Lee SH, McHugh MA, Fluid Phase Equilib., 83, 341, 1993
- Hasch BM, Meilchen MA, Lee SH, McHugh MA, J. Polym. Sci. B: Polym. Phys., 30, 1365, 1992
- Irani CA, Cozewith C, J. Appl. Polym. Sci., 31, 1879, 1986
- Kaus MJ, "Modern Plastics Encyclopedia," Chemical Week Associates, NY, Mid October, 1988
- Lee SH, McHugh MA, Polymer, 38(6), 1317, 1997
- Lee SH, LoStracco MA, McHugh MA, Macromolecules, 29(4), 1349, 1996
- Lee SH, LoStracco MA, McHugh MA, Macromolecules, 27(17), 4652, 1994
- Lee SH, LoStracco MA, Hasch BM, McHugh MA, J. Phys. Chem., 98(15), 4055, 1994
- LoStracco MA, Lee SH, McHugh MA, Polymer, 35(15), 3272, 1994
- Luft G, Wind RW, Chem. Ing. Tech., 64, 1114, 1992
- Meilchen MA, Hasch BM, Lee SH, McHugh MA, Polymer, 33, 1922, 1992
- Meilchen MA, Hasch BM, McHugh MA, Macromolecules, 24, 4874, 1991
- Mergenhagen LK, "Modern Plastics," Chemical Week Associates, NY, Mid October, 1991
- Otocka EP, Kwei TK, Macromolecules, 1, 244, 1968
- Pratt JA, Lee SH, McHugh MA, J. Appl. Polym. Sci., 49, 953, 1993
- Prausnitz JM, Lichtenthaler RN, de Azevedo EG, "Molecular Thermodynamics of Fluid-Phase Equilibria," 2nd ed., Prentice-Hall, Englewood Cliffs, NJ, 1986
- Ratzsch MT, Wagner P, Wohlfarth C, Heise D, Acta Polym., 33, 463, 1982
- Ratzsch MT, Wagner P, Wohlfarth C, Gleditzsch S, Acta Polym., 34, 340, 1983
- Reid RC, Prausnitz JM, Pouling BE, "The Properties of Gases and Liquids," 4th ed., McGraw-Hill, New York, 1987
[Cited By]
참고문헌정보(참고문헌, 인용문헌)는 화학공학소재연구정보센터에 의해 제공되고 있습니다.