Control of morphology and interfacial tension of PC/SAN blends with compatibilizer

J. H. Kim; M. J. Kim; C. K. Kim; J. W. Lee

Korea-Australia Rheology Journal, Vol.13, No.3, 125-130, September, 2001

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Control of morphology and interfacial tension of PC/SAN blends with compatibilizer

J. H. Kim, M. J. Kim, C. K. Kim^†, and J. W. Lee¹

Department of Chemical Engineering, Chung-Ang University, 221 Huksuk-Dong,Dongjak-Gu, Seoul, 156-756, Korea.
¹Department of Chemical Engineering, Sogang University, Seoul, 100-611, Korea

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Block copolymers of PC-b-PMMA (polycarbonate-b-polymethylmethacrylate) and PC-b-SAN (polycarbonate-b-(styrene-c-acrylonitrile)), were examined as compatibilizers for blends of PC with SAN copolymer. The average diameter of the dispersed particles was measured with an image analyzer, and the interfacial properties of the blends were analyzed with an imbedded fiber retraction (IFR) technique. The average diameter of dispersed particles and interfacial tension of the PC/SAN blends reached a minimum value when the SAN copolymer contained about 24 wt% AN. Interfacial tension and particle size were further reduced by adding compatibilizer to the PC/SAN blends. PC-b-PMMA was more effective than PC-b-SAN as a compatibilizer in reducing the average diameter of the dispersed particles and interfacial tension of PC/SAN blend. A direct proportionality between the particle diameter and interfacial tension was also observed. The interfacial properties of the PC/SAN blends were optimized by adding a block copolymer and using an SAN copolymer that had minimum interaction energy with PC.

Keywords:PC/SAN blend;compatibility;size of dispersed particles;interfacial tension

[References]

Callaghan TA, Takakuwa K, Paul DR, Padwa AR, Polymer, 34(18), 3796 (1993)
Carriere CJ, Cohen AJ, Arends CB, J. Rheol., 33, 681 (1989)
Carriere CJ, Cohen AJ, J. Rheol., 35, 205 (1991)
Cheng TW, Keskkula H, Paul DR, Polymer, 33, 1606 (1992)
Cohen AJ, Carriere CJ, Rheol. Acta, 28, 223 (1989)
Fowler ME, Keskkula H, Paul DR, Polymer, 28, 1703 (1987)
Freitag D, Grigo U, Muller PR, Nouvertne W, Encyclopedia of Polymer Science and Engineering, Ed. H.F. Mark, N.M. Bikales, C.G. Overberger and G.Menges, 2(nd) Ed. John Wiley, New York, 11, 48 (1988)
Guest M, Daly JH, Eur. Polym. J., 25, 985 (1989)
Keitz JD, Barlow JW, Paul DR, J. Appl. Polym. Sci., 29, 3253 (1984)
Kim CK, Paul DR, Polymer, 33, 4941 (1992)
Lee S, Park OO, J. Appl. Polym. Sci., 77(6), 1338 (2000)
Matsumoto T, Kanayama S, Preparation of PC-b-PS copolymer and their applications, Japan Patent, 63-15822 (1988)
Quentens D, Groeninckx G, Guest M, Aerts M, Polym. Eng. Sci., 31, 1207 (1991)
Paul DR, Barlow JW, Keskkula H, Encyclopedia of Polymer Science and Engineering, Ed. H.F. Mark, N.M. Bikales, C.G. Overberger and G. Menges, 2(nd) Ed. John Wiley, New York, 12, 399 (1988)
Suess M, Kresseler J, Krammer HW, Polymer, 28, 957 (1987)
Wool RP, Polymer Interfaces, Structure and Strength, Hanser Publishers, 336 (1989)

[Referenced By]

[Related Articles]

[1] Callaghan TA, Takakuwa K, Paul DR, Padwa AR, Polymer, 34(18), 3796 (1993)

[2] Carriere CJ, Cohen AJ, Arends CB, J. Rheol., 33, 681 (1989)

[3] Carriere CJ, Cohen AJ, J. Rheol., 35, 205 (1991)

[4] Cheng TW, Keskkula H, Paul DR, Polymer, 33, 1606 (1992)

[5] Cohen AJ, Carriere CJ, Rheol. Acta, 28, 223 (1989)

[6] Fowler ME, Keskkula H, Paul DR, Polymer, 28, 1703 (1987)

[7] Freitag D, Grigo U, Muller PR, Nouvertne W, Encyclopedia of Polymer Science and Engineering, Ed. H.F. Mark, N.M. Bikales, C.G. Overberger and G.Menges, 2(nd) Ed. John Wiley, New York, 11, 48 (1988)

[8] Guest M, Daly JH, Eur. Polym. J., 25, 985 (1989)

[9] Keitz JD, Barlow JW, Paul DR, J. Appl. Polym. Sci., 29, 3253 (1984)

[10] Kim CK, Paul DR, Polymer, 33, 4941 (1992)

[11] Lee S, Park OO, J. Appl. Polym. Sci., 77(6), 1338 (2000)

[12] Matsumoto T, Kanayama S, Preparation of PC-b-PS copolymer and their applications, Japan Patent, 63-15822 (1988)

[13] Quentens D, Groeninckx G, Guest M, Aerts M, Polym. Eng. Sci., 31, 1207 (1991)

[14] Paul DR, Barlow JW, Keskkula H, Encyclopedia of Polymer Science and Engineering, Ed. H.F. Mark, N.M. Bikales, C.G. Overberger and G. Menges, 2(nd) Ed. John Wiley, New York, 12, 399 (1988)

[15] Suess M, Kresseler J, Krammer HW, Polymer, 28, 957 (1987)

[16] Wool RP, Polymer Interfaces, Structure and Strength, Hanser Publishers, 336 (1989)