Synthesis of Polypropylene-Polystyrene Copolymer via Ultrasonic Irradiation-Initiated Polymerization of Styrene in Polypropylene Solution

Hyungsu Kim; Jihye Kim; Miwha Kim; Seyoung Oh; jaewook Lee

Korea Polymer Journal, Vol.9, No.3, 150-156, June, 2001

Hyungsu Kim^†, Jihye Kim, Miwha Kim, Seyoung Oh¹, and jaewook Lee¹

Applied Rheology Center, Department of Chemica Engineering, Dankook University, Seoul 140-714, Korea
¹Applied Rheology Center, Department of Chemica Engineering, Sogang University, Seoul 121-742, Korea

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Polystyrenes(PS) were grafted onto polypropylene(PP) in the PP solution by ultrasonic irradiation-initiated polymerization of styrene. The resulting products consisted of mixtures of homopolymers and PP-PS copolymer because of the homopolymerization of styrene itself and copolymerization with PP. The dependency of the designated polymerization on sonication times was investigated to monitor the evolution of the copolymerization. Formation of the PP-FS copolymer was confirmed by FTIR analysis of the reaction products after a proper separation procedure of free PS and PP-PS copolymer. It was found that the tendency for the formation of PP-PS copolymer was closely related with the phase behavior of the PP/styrene mixture which was also influenced by sonication time. In order to verify the effectiveness of the PP-PS copolymer as a compatibilizer for PP/PS blend, melt mixing of PP/PS/PP-PS was performed in a batch mixer. During the mixing, the average torque was higher for the blend containing PF-PS copolymer influencing compatibilization, In accordance with the results from FTIR analysis and torque measurement, the PS domain size remarkably decreased in the PP/PS/PP-PS blend.

[References]

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Lindstrom O, Lamm O, J. Phys. Colloid. Chem., 55, 1139 (1951)
Kruus P, Ultrasonics, 21, 193 (1983)
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Barnes CE, J. Am. Chem. Soc., 67, 217 (1945)
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Du Y, Xue Y, Frisch HL, in Physical Properties of Polymers Handbook, J.E. Mark, Ed., AIP Press, New York, Chapter 16. (1996)
Ryoo JG, Lee PS, Kim HS, Lee JW, Proceedings ANTEC Tech. Papers, 2135 (2001)

[Referenced By]

[Related Articles]

[1] Slough W, Ubbelhode AR, J. Chem. Soc., 918 (1957)

[2] Bowser R, Davidson RS, in Current Trends in Sonochemistry, G. J. Price, Ed., The Royal Society of Chemistry, Cambridge (1992)

[3] Suslick KS, Science, 253, 1397 (1991)

[4] Lindstrom O, Lamm O, J. Phys. Colloid. Chem., 55, 1139 (1951)

[5] Kruus P, Ultrasonics, 21, 193 (1983)

[6] Kruus P, Patraboy TJ, J. Phys. Chem., 89, 3379 (1985)

[7] Kruus P, Lawrie J, O'Neill ML, Ultrasonics, 26, 352 (1988)

[8] Kruus P, O'Neill ML, Robertson D, Ultrasonics, 28, 304 (1990)

[9] Henglein A, Makromol. Chem., 14, 15 (1954)

[10] Bigg S, Grieser F, Macromolecules, 28(14), 4877 (1995)

[11] Ooi SK, Biggs S, Ultrason. Sonochem., 7, 125 (2000)

[12] Schnabel W, Polymer Degradation: Principles and Practical Applications, Hanser, Munchen, Chapter 3. (1981)

[13] Fujiwara H, Goto K, Polym. Bull., 23, 27 (1990)

[14] Price GJ, West PJ, Polymer, 37(17), 3975 (1996)

[15] Miwa Y, Yamamoto K, Sakaguchi M, Shimada S, Macromolecules, 32(24), 8234 (1999)

[16] Barnes CE, J. Am. Chem. Soc., 67, 217 (1945)

[17] Hahnfeld JL, Dalke BD, in Encyclopedia of Polymer Science and Engineering, Wiley-Inter-science, New York, Vol. 16, pp 1-71. (1988)

[18] Du Y, Xue Y, Frisch HL, in Physical Properties of Polymers Handbook, J.E. Mark, Ed., AIP Press, New York, Chapter 16. (1996)

[19] Ryoo JG, Lee PS, Kim HS, Lee JW, Proceedings ANTEC Tech. Papers, 2135 (2001)