Segmented Polyurethane Ionomer에 있어서의 Prepolymer 분자량의 영향

김병규; 김태균

Polymer(Korea), Vol.16, No.5, 609-613, September, 1992

Export Citation

Segmented Polyurethane Ionomer에 있어서의 Prepolymer 분자량의 영향

Effect of Prepolymer Molecular Weight in Segmented Polyurethane Ionomers

김병규, 김태균

초록

환상 지방족 isocyanate인 isophorone diisocyanate(IPDI)와, poly(tetramethylene adipate) glycol(PTAd). dimethylol propionic acid(DMPA)로 부터 polyurethane(PU) ionomer를 제조, 이를 물에 분산시킴으로써 안정된 수성 PU를 제조하였으며, prepolymer의 분자량(2000∼6000)이 유화특성 및 emulsion cast film의 열적, 기계적 성질에 미치는 영향을 검토하였다. Prepolymer의 분자량 증가와 더불어 유화입경 및 인장물성(탄성률 및 강도)은 급격한 감소후 완만한 증가를 보였으며, 점도 및 신율은 대체적으로 이와 상반되는 경향을 보였다. 또한 soft segment T_m 및 T_g는 prepolymer 분자량이 증가함에 따라 증가하는 경향을 나타내었다.

Segmented polyurethane(PU) ionomers were prepared from isophorone diisocyanate(IPDI), poly(tetramethylene adipate) glycol(PTAd), and dimethylol propionic acid(DMPA) as an anioic center. The effect of prepolymer molecular weight(2000∼6000) on the emulsion properties, and thermal and mechanical properties of emulsion cast film was investigated. Particle size and tensile properties(modulus and strength) showed a rapid drop followed by a mild increase with increase of prepolymer molecular weight. Emulsion viscosity and elongation at break showed opposite tendency to the above. Melting temperature(T_m) and glass transion temperature (T_g) of the soft segment moved toward higher temperature with the increase of prepolymer molecular weight.

[References]

Dieterich D, Keberle W, Witt H, Angew. Chem.-Int. Edit., 9, 40 (1970)
Dieterich D, Prog. Org. Coat., 9, 281 (1981)
Knuab P, Camberlin Y, J. Appl. Polym. Sci., 32, 5627 (1986)
Pandya MV, Deshpande DD, Hundiwale DG, J. Appl. Polym. Sci., 32, 4959 (1986)
David DJ, Staley HB, Analytical Chemistry of Polyurethanes, High Polymer Series, XVI, Part III, Wiley-Interscience, New York (1969)
Tirpak RE, Markusch PH, Paper Presented at the Water-Borne and Higher-Solid Coatings Symposium, Feb. 13-15, New Orleans, LA (1985)
Rosthauser JW, Nachtkamp K, "Advances in Urethane Science and Technology," K.C. Frisch and D. Klempner eds., Vol. 10, pp. 121-162 (1987)
Kim BK, Kim TK, J. Appl. Polym. Sci., 43, 393 (1991)
Han CD, "Multiphase Flow in Polymer Processing," Academic Press, New York (1981)
Rutger IR, Rheol. Acta, 2, 202 (1962)
Rutger IR, Rheol. Acta, 2, 305 (1962)
Saunder FL, Rheological Properties of Latex, in "Advances in Emulsion Polymerization and Latex Technology," Vol. II, Notes Compiled by M. El-Aasser, Lehigh Univ., Bethlemhem, PA. (1990)
Kim KW, Polym.(Korea), 4(2), 96 (1980)
Saunders FL, J. Colloid Sci., 16, 13 (1961)
Abouzahr S, Wilkes GL, J. Appl. Polym. Sci., 29, 2695 (1984)
Cooper SL, Tobolsky AV, J. Appl. Polym. Sci., 10, 1837 (1966)
Al-Salak HA, Frisch KC, Xiao HX, Melean JA, J. Appl. Polym. Sci., 25, 2157 (1987)

[Referenced By]

[1] Dieterich D, Keberle W, Witt H, Angew. Chem.-Int. Edit., 9, 40 (1970)

[2] Dieterich D, Prog. Org. Coat., 9, 281 (1981)

[3] Knuab P, Camberlin Y, J. Appl. Polym. Sci., 32, 5627 (1986)

[4] Pandya MV, Deshpande DD, Hundiwale DG, J. Appl. Polym. Sci., 32, 4959 (1986)

[5] David DJ, Staley HB, Analytical Chemistry of Polyurethanes, High Polymer Series, XVI, Part III, Wiley-Interscience, New York (1969)

[6] Tirpak RE, Markusch PH, Paper Presented at the Water-Borne and Higher-Solid Coatings Symposium, Feb. 13-15, New Orleans, LA (1985)

[7] Rosthauser JW, Nachtkamp K, "Advances in Urethane Science and Technology," K.C. Frisch and D. Klempner eds., Vol. 10, pp. 121-162 (1987)

[8] Kim BK, Kim TK, J. Appl. Polym. Sci., 43, 393 (1991)

[9] Han CD, "Multiphase Flow in Polymer Processing," Academic Press, New York (1981)

[10] Rutger IR, Rheol. Acta, 2, 202 (1962)

[11] Rutger IR, Rheol. Acta, 2, 305 (1962)

[12] Saunder FL, Rheological Properties of Latex, in "Advances in Emulsion Polymerization and Latex Technology," Vol. II, Notes Compiled by M. El-Aasser, Lehigh Univ., Bethlemhem, PA. (1990)

[13] Kim KW, Polym.(Korea), 4(2), 96 (1980)

[14] Saunders FL, J. Colloid Sci., 16, 13 (1961)

[15] Abouzahr S, Wilkes GL, J. Appl. Polym. Sci., 29, 2695 (1984)

[16] Cooper SL, Tobolsky AV, J. Appl. Polym. Sci., 10, 1837 (1966)

[17] Al-Salak HA, Frisch KC, Xiao HX, Melean JA, J. Appl. Polym. Sci., 25, 2157 (1987)