The Effect of Oligomer Blending on the Flow Properties of Polycarbonate

Sunghwan Cho; Sunmi-Kim; Misuk-Cho; Youngkwan Lee; Dongmin Kim; Whangi Kim

Macromolecular Research, Vol.17, No.12, 1021-1024, December, 2009

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The Effect of Oligomer Blending on the Flow Properties of Polycarbonate

Sunghwan Cho^{1, 2}, Sunmi-Kim¹, Misuk-Cho², Youngkwan Lee^{2, †}, Dongmin Kim³, and Whangi Kim⁴

¹Advanced Polymeric Materials R&D Center, Samyang Corporation, Daejeon 305-717, Korea
²Department of Chemical Engineering, Sungkyunkwan University, Gyeonggi 440-746, Korea
³Department of Materials Science and Engineering, Hongik University, Chungnam 339-701, Korea
⁴Department of Applied Chemistry, Konkuk University, Chungbuk 339-701, Korea

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We successfully prepared high-flow polycarbonate (PC) by blending commercial PC with a low molecular weight PC oligomer. The oligomer was synthesized by the addition of a large quantity of mono functional phenol groups, and the chain end group was reacted with p-tertiary butyl phenol (PTBP) to block the reactivity. The viscosity average molecular weight (Mv) for the oligomer was about 4,000-5,000 g/mol, compared to ~19,000 g/mol for the PC blend obtained by blending 10 wt% of the prepared oligomer with the commercial grade PC (Mv of 21,000 g/mol). The blended PC had a melt flow index of 45, which is 2.5 times higher, and a processing temperature that was 20 ℃ lower, than that of commercial grade PC having a similar Mv.

Keywords:PC;PC oligomer;blend;high flow;viscosity

[References]

Pham HT, Munjal S, Bosnyak CP, in Handbook of thermoplastics, Olabisi O, Ed., Marcel Dekker, New York (1997)
Madkour TM, in Polymer data handbook, Mark JK, Ed., Oxford University Press, New York (1999)
Pham HT, Weckle CL, Ceraso JM, Adv. Mater., 12(23), 1881 (2000)
Schnell H, in Chemistry and physics of PC, Interscience, New York (1964)
Nguyen C, Kim J, Macromol. Res., 16(7), 620 (2008)
Li SC, Jarvela PK, Jarvela PA, J. Appl. Polym. Sci., 71(10), 1649 (1999)
Hsieh TT, Tiu C, Hsieh KH, Simon GP, J. Appl. Polym. Sci., 77(10), 2319 (2000)
Jiang L, Lam YC, Zhang J, J. Polym. Sci. B: Polym. Phys., 43(19), 2683 (2005)
Liu CY, Li CX, Chen P, He JS, Fan QR, Polymer, 45(8), 2803 (2004)
Liang GG, Cook WD, Sautereau HJ, Tcharkhtchi A, Eur. Polym. J., 44, 366 (2008)
Kroschwitz J, in Encyclopedia of polymer science and engineering, Wiley, New York (1985)
Yoshida E, Nakamora M, Polym. J., 30, 915 (1998)
Ranucci E, Ferruti P, Macromolecules, 24, 3747 (1991)
Marousek V, Svoboda P, Kralicek J, Angew Makromol. Chem., 178, 85 (1990)
Munjal S, Polym. Eng. Sci., 34(2), 93 (1994)
Fontana LP, Miller KF, Clasen AA, van Es PW, de Vroomen TON, Quinn CB, Campbell RW
Okamoto M, Polymer, 42(20), 8355 (2001)
Pham HT, Bosnyak CP, Wilchester JW, Christenson CP, J. Appl. Polym. Sci., 48, 1425 (1993)

[Referenced By]

[Related Articles]

[1] Pham HT, Munjal S, Bosnyak CP, in Handbook of thermoplastics, Olabisi O, Ed., Marcel Dekker, New York (1997)

[2] Madkour TM, in Polymer data handbook, Mark JK, Ed., Oxford University Press, New York (1999)

[3] Pham HT, Weckle CL, Ceraso JM, Adv. Mater., 12(23), 1881 (2000)

[4] Schnell H, in Chemistry and physics of PC, Interscience, New York (1964)

[5] Nguyen C, Kim J, Macromol. Res., 16(7), 620 (2008)

[6] Li SC, Jarvela PK, Jarvela PA, J. Appl. Polym. Sci., 71(10), 1649 (1999)

[7] Hsieh TT, Tiu C, Hsieh KH, Simon GP, J. Appl. Polym. Sci., 77(10), 2319 (2000)

[8] Jiang L, Lam YC, Zhang J, J. Polym. Sci. B: Polym. Phys., 43(19), 2683 (2005)

[9] Liu CY, Li CX, Chen P, He JS, Fan QR, Polymer, 45(8), 2803 (2004)

[10] Liang GG, Cook WD, Sautereau HJ, Tcharkhtchi A, Eur. Polym. J., 44, 366 (2008)

[11] Kroschwitz J, in Encyclopedia of polymer science and engineering, Wiley, New York (1985)

[12] Yoshida E, Nakamora M, Polym. J., 30, 915 (1998)

[13] Ranucci E, Ferruti P, Macromolecules, 24, 3747 (1991)

[14] Marousek V, Svoboda P, Kralicek J, Angew Makromol. Chem., 178, 85 (1990)

[15] Munjal S, Polym. Eng. Sci., 34(2), 93 (1994)

[16] Fontana LP, Miller KF, Clasen AA, van Es PW, de Vroomen TON, Quinn CB, Campbell RW

[17] Okamoto M, Polymer, 42(20), 8355 (2001)

[18] Pham HT, Bosnyak CP, Wilchester JW, Christenson CP, J. Appl. Polym. Sci., 48, 1425 (1993)