Core-Shell Polymerization with Hydrophilic Polymer Cores

Jong Myung Park

Korea Polymer Journal, Vol.9, No.1, 51-65, February, 2001

Export Citation

Core-Shell Polymerization with Hydrophilic Polymer Cores

Jong Myung Park^†

Central Research Institute, Kumgang Korea Chemical Co. (KCC), Ltd., #85, Mabook-ri, Kuseong-myun, Yongin-si, Kyunggi-do 449-910, Korea

E-mail:

Two-stage emulsion polymerizations of hydrophobic monomers on hydrophilic seed polymer particles were carried out to make core-shell composite particles, it was found that the loci of polymerization in the second stage were the surface layer of the hydrophilic seed Latex particles, and that ii has resulted in the formation of either eccentric core-shell particles with the core exposed to the aqueous phase or aggregated nonspherical composite particles with the shell attached on the seed surface as many small separated particles. The driving force of these phenomena is related to the gain in free energy of the system in going from the hydrophobic polymer-water interface to hydrophilic polymer-water interface. Thermodynamic analysis of the present polymerization system, which was based on spreading coefficients, supported the likely occurrence of such nonspherical particles due to the combined effects of interfacial free energies and phase separation between the two polymer phases. A hypothetical pathway was proposed to prepare hydrophilic core-hydrophobic shell composite latex particles, which is based on the concept of opposing driving and resistance forces for the phase migration. It was found that the viscosity of the monomer-swollen polymer phase played important role in the formation of particle morphology.

[References]

Dickie RY, Cheung MF, Newman S, J. Appl. Polym. Sci., 17, 65 (1973)
Lee DI, Ishikawa T, J. Polym. Sci. A: Polym. Chem., 21, 147 (1983)
Min T, Klein A, El-Aasser MS, Vanderhoff JW, J. Polym. Sci. A: Polym. Chem., 21, 2845 (1983)
Okubo M, Makromol. Chem. Macromol. Symp., 35-36, 307 (1990)
Cho I, Lee K, J. Appl. Polym. Sci., 30, 1903 (1985)
Bordon A, British Patent, 1,009,486 (1965)
Bordon A, U.S. Patent, 3,291,768 (1966)
Zosel A, Ley G, Macromolecules, 26, 2222 (1993)
Oconnor KM, Tsaur SL, J. Appl. Polym. Sci., 33, 2007 (1987)
Richard J, Mignaud C, Wong K, Polym. Int., 33, 4164 (1992)
Eliseeva VI, in Emulsion Polymerization, I. Piirma, Ed., Academic Press, pp 281. (1982)
Muroi S, Hashimoto H, Hosoi K, J. Polym. Sci. A: Polym. Chem., 22, 1365 (1984)
Ross WD, J. Paint Tech., 43(563), 50 (1971)
Seiner A, Gehart, Ind. Eng. Chem. Prod. Res. Dev., 12(2), 98 (1971)
Pierce PE, Babil S, Blasko J, ACS Div. Org. Coat. Plast. Chem., 33(2), 271 (1973)
Fitzwater S, Hook JW, J. Coat. Technol., 57(721), 39 (1985)
Lando JL, Oakley HT, J. Colloid Interface Sci., 25, 526 (1967)
Greene K, J. Colloid Interface Sci., 43, 449 (1973)
Loncar FV, Ph. D. Thesis, Lehigh University (1985)
Obrecht W, Funke W, Makromol. Chem., 177, 1877 (1976)
Kim J, Ph. D. Thesis, Lehigh University, pp. 46. (1986)
Hearn J, Wilkinson MC, Goodall AR, Adv. Colloid Interface Sci., 14, 173 (1981)
Yamazaki S, Kobunshi Ronbunshu, 33, 655 (1976)
Dimonie V, El-Aasser MS, Klein A, Vanderhoff JW, J. Polym. Sci. A: Polym. Chem., 22, 2197 (1984)
Torza S, Mason SG, J. Colloid Interface Sci., 33, 67 (1970)
Sundberg D, in Advances in Emulsion Polymerization and Latex Technology, 19(th) Annual short Course, June 6-10, Lehigh University. (1988)
Okubo M, Katsuta Y, Matsumoto T, J. Polym. Sci. A: Polym. Chem., 20, 45 (1982)
Okubo M, Yamada A, Masumoto T, J. Polym. Sci. A: Polym. Chem., 18, 3219 (1980)
Okubo M, Ando M, Yamada A, Katsuta Y, Matsumoto T, J. Polym. Sci. C: Polym. Lett., 19, 143 (1981)
Chainey M, Wilkinson MC, Hearn J, Ind. Eng. Chem. Prod. Res. Dev., 21, 171 (1982)
Park JM, J. Ind. Eng. Chem., sumitted (2000)

[Referenced By]

[1] Dickie RY, Cheung MF, Newman S, J. Appl. Polym. Sci., 17, 65 (1973)

[2] Lee DI, Ishikawa T, J. Polym. Sci. A: Polym. Chem., 21, 147 (1983)

[3] Min T, Klein A, El-Aasser MS, Vanderhoff JW, J. Polym. Sci. A: Polym. Chem., 21, 2845 (1983)

[4] Okubo M, Makromol. Chem. Macromol. Symp., 35-36, 307 (1990)

[5] Cho I, Lee K, J. Appl. Polym. Sci., 30, 1903 (1985)

[6] Bordon A, British Patent, 1,009,486 (1965)

[7] Bordon A, U.S. Patent, 3,291,768 (1966)

[8] Zosel A, Ley G, Macromolecules, 26, 2222 (1993)

[9] Oconnor KM, Tsaur SL, J. Appl. Polym. Sci., 33, 2007 (1987)

[10] Richard J, Mignaud C, Wong K, Polym. Int., 33, 4164 (1992)

[11] Eliseeva VI, in Emulsion Polymerization, I. Piirma, Ed., Academic Press, pp 281. (1982)

[12] Muroi S, Hashimoto H, Hosoi K, J. Polym. Sci. A: Polym. Chem., 22, 1365 (1984)

[13] Ross WD, J. Paint Tech., 43(563), 50 (1971)

[14] Seiner A, Gehart, Ind. Eng. Chem. Prod. Res. Dev., 12(2), 98 (1971)

[15] Pierce PE, Babil S, Blasko J, ACS Div. Org. Coat. Plast. Chem., 33(2), 271 (1973)

[16] Fitzwater S, Hook JW, J. Coat. Technol., 57(721), 39 (1985)

[17] Lando JL, Oakley HT, J. Colloid Interface Sci., 25, 526 (1967)

[18] Greene K, J. Colloid Interface Sci., 43, 449 (1973)

[19] Loncar FV, Ph. D. Thesis, Lehigh University (1985)

[20] Obrecht W, Funke W, Makromol. Chem., 177, 1877 (1976)

[21] Kim J, Ph. D. Thesis, Lehigh University, pp. 46. (1986)

[22] Hearn J, Wilkinson MC, Goodall AR, Adv. Colloid Interface Sci., 14, 173 (1981)

[23] Yamazaki S, Kobunshi Ronbunshu, 33, 655 (1976)

[24] Dimonie V, El-Aasser MS, Klein A, Vanderhoff JW, J. Polym. Sci. A: Polym. Chem., 22, 2197 (1984)

[25] Torza S, Mason SG, J. Colloid Interface Sci., 33, 67 (1970)

[26] Sundberg D, in Advances in Emulsion Polymerization and Latex Technology, 19(th) Annual short Course, June 6-10, Lehigh University. (1988)

[27] Okubo M, Katsuta Y, Matsumoto T, J. Polym. Sci. A: Polym. Chem., 20, 45 (1982)

[28] Okubo M, Yamada A, Masumoto T, J. Polym. Sci. A: Polym. Chem., 18, 3219 (1980)

[29] Okubo M, Ando M, Yamada A, Katsuta Y, Matsumoto T, J. Polym. Sci. C: Polym. Lett., 19, 143 (1981)

[30] Chainey M, Wilkinson MC, Hearn J, Ind. Eng. Chem. Prod. Res. Dev., 21, 171 (1982)

[31] Park JM, J. Ind. Eng. Chem., sumitted (2000)