Blends of Nylon-6 and Ethylene-Propylene Rubber Prepared by Melt Mixing with Maleic Anhydride

Dai Soo Lee; Bong-Woo Chung; Byeongcheol Kim; Sung Lee; Jung Rim Haw

Journal of Industrial and Engineering Chemistry, Vol.1, No.1, 70-75, December, 1995

Dai Soo Lee , Bong-Woo Chung , Byeongcheol Kim, Sung Lee¹, and Jung Rim Haw¹

Dept. of Chemical Technology, College of Eng., Chonbuk Nat'l Univ., Chonju, 560-765, Korea
¹Dept. of Industrial Chem., College of Eng., Konkuk Univ., Seoul 133-701, Korea

There have been many studies on toughening of polyamide with maleated ethylene-propylene rubber (MEPR) which forms graft copolymer with polyamide by reactions between maleic anhydride of MEPR and amine group of polyamide during melt mixing. Previous studies showed that the graft copolymers formed in situ during melt mixing reduced the size of rubber particles in polyamide/MEPR blends and effectively improved the toughness of polyamide. In this paper, structure-property relationships of Nylon-6 and ethylene-propylene rubber(EPR) blends prepared by melt mixing of Nylon-6, EPR, maleic anhydride(MAH), and dicumyl peroxide(DCP) are investigated. It was observed that the size of rubber particles in the Nylon-6/EPR blends decreased as the MAH content increased in the blends. In Molau test, formation of graft copolymers in the Nylon-6/EPR blends was confirmed. The tensile strength and melt viscosity of the blends increased and leveled off as the MAH content increased. The notched Izod impact strength shoed brittle-tough transition as the MAH contents increased from 0.1 to 0.2 parts per hundred of the blends. It was postulated that melt mixing of Nylon-6, EPR, MAH, and DCP in one step is an effective way of preparing tough Nylon-6/EPR blends like Nylon-6/MEPR blends.

[References]

Wu S, Polymer, 26, 1855 (1985)
Wu S, J. Polym. Sci. B: Polym. Phys., 21, 699 (1983)
Borggreve RJM, Gaymans RJ, Schuijer S, Housz JFI, Polymer, 28, 1489 (1987)
Margolina A, Wu S, Polymer, 29, 2170 (1988)
Margolina A, Polym. Commun., 31, 95 (1990)
Greco R, Lanzetta N, Maglio G, Malinconico M, Martuscelli E, Palumbo R, Ragosta G, Scarinzi G, Polymer, 27, 299 (1986)
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Molau GE, Richardson EH, "Multicomponent Polymer Systems," N.A.J. Platzer Eds., Adv. Chem. Ser., No. 99, ACS, Washington D.C. (1971)
Han CD, "Multiphase Flow in Polymer Processing," Academic Press, New York (1981)
Haw JR, Lee S, Lee DS, Polym.(Korea), 17(6), 681 (1993)

[Related Articles]

[1] Wu S, Polymer, 26, 1855 (1985)

[2] Wu S, J. Polym. Sci. B: Polym. Phys., 21, 699 (1983)

[3] Borggreve RJM, Gaymans RJ, Schuijer S, Housz JFI, Polymer, 28, 1489 (1987)

[4] Margolina A, Wu S, Polymer, 29, 2170 (1988)

[5] Margolina A, Polym. Commun., 31, 95 (1990)

[6] Greco R, Lanzetta N, Maglio G, Malinconico M, Martuscelli E, Palumbo R, Ragosta G, Scarinzi G, Polymer, 27, 299 (1986)

[7] Oostenbrink AJ, Borggreve RJM, Gaymans RJ, "Integration of Fundamental Polymer Science and Technology," P.J. Lemstra and L.A. Kleintjens Eds., Part 2, Elsevier Applied Science, London

[8] Molau GE, Richardson EH, "Multicomponent Polymer Systems," N.A.J. Platzer Eds., Adv. Chem. Ser., No. 99, ACS, Washington D.C. (1971)

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

[10] Haw JR, Lee S, Lee DS, Polym.(Korea), 17(6), 681 (1993)