Preparation and Adhesive Properties of Azoester-modified SBS Triblock Copolymers

Jae-Yong Shin; Young-Wook Chang; Sunghun Ryu

Journal of Industrial and Engineering Chemistry, Vol.8, No.4, 375-379, July, 2002

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Preparation and Adhesive Properties of Azoester-modified SBS Triblock Copolymers

Jae-Yong Shin, Young-Wook Chang^†, and Sunghun Ryu¹

Department of Chemical Engineering, Hanyang University, Ansan 425-701, Korea
¹College of Environment & Applied Chemistry, Kyung Hee University, Yongin 449-701, Korea

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Styrene-butadiene-styrene triblock copolymer (SBS) has been modified by reaction with isopropyl azodicarboxylate (IAD). Tg of the butadiene block, tensile strength and stiffness of the block copolymer increase with modification level, which is attributed to increased polar interactions between the chains. Peel strength of Al laminiate and Nylon-6 laminate bonded with modified SBS was investigated. The incorporation of adequate amount of the IAD onto the block copolymer improves its adhesive strength over metal and nylon-6 substrate substantially. In the case of nylon-6/modified SBS joints, their bond strength increased with increasing contact time at a particular temperature range. It is suggested that in the temperature range of 160 ~ 200 ℃, there is a reaction between the carboxyl group of modified SBS and the amino group of nylon-6 to form interfacial chemical bonds, which controls the adhesion behavior of SEB-g-IAD/nylon-6 joints.

Keywords:Isopropyl azodicarboxylate (IAD);SBS triblock copolymers;adhesive strength;interfacial bonding

[References]

Walker BM, Rader CP, Handbook of Thermoplastic Elastomers, Van Nostrand Reinhold, New York (1988)
Wang C, Chang CI, J. Polym. Sci. B: Polym. Phys., 35(13), 2017 (1997)
Sakurai S, Aida S, Nomura S, Polymer, 40(8), 2071 (1999)
Ferrer GG, Sanchez MS, Sanchez EV, Colomer RF, Ribelles JLG, Polym. Int., 49, 853 (2000)
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Schulz DN, Spiewak JW, Valaitis JK, Mochel VD, Barzan ML, Macromolecules, 13, 1367 (1980)
Roland CM, Bohm GGA, Sadhukkan P, J. Appl. Polym. Sci., 30, 2021 (1985)
Han CD, Baek DM, Kim J, Kimishima K, Hashimoto T, Macromolecules, 25, 3052 (1992)
Sakurai S, Mori K, Okawara A, Kimishima K, Hashimoto Y, Macromolecules, 25, 2679 (1992)
Raghava RS, Smith RW, J. Polym. Sci. B: Polym. Phys., 27, 2525 (1989)
Jha A, Bhowmich AK, Fujitsuka R, Inoue T, J. Adhes. Sci. Technol., 13(6), 649 (1999)

[Referenced By]

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[1] Walker BM, Rader CP, Handbook of Thermoplastic Elastomers, Van Nostrand Reinhold, New York (1988)

[2] Wang C, Chang CI, J. Polym. Sci. B: Polym. Phys., 35(13), 2017 (1997)

[3] Sakurai S, Aida S, Nomura S, Polymer, 40(8), 2071 (1999)

[4] Ferrer GG, Sanchez MS, Sanchez EV, Colomer RF, Ribelles JLG, Polym. Int., 49, 853 (2000)

[5] Lopez JIT, Palacios MJE, Sanchez MAM, Sanchez EV, Ribelles JLG, Pradas MM, MeseguerDuenas JM, Colomer RF, Plast. Rubber Comp. Proc. Appl., 25, 427 (1996)

[6] Yuan GX, Zhao Y, Polymer, 38(1), 119 (1997)

[7] Huson MG, Jooste DA, McGill WJ, Plast. Rubber Proc. Appl., 11, 77 (1989)

[8] Hamed GR, Shieh CH, Rubber Chem. Technol., 57, 227 (1984)

[9] Spiewak JW, Bryant L, Earle C, Schulz DN, J. Appl. Polym. Sci., 26, 4331 (1981)

[10] Schulz DN, Spiewak JW, Valaitis JK, Mochel VD, Barzan ML, Macromolecules, 13, 1367 (1980)

[11] Roland CM, Bohm GGA, Sadhukkan P, J. Appl. Polym. Sci., 30, 2021 (1985)

[12] Han CD, Baek DM, Kim J, Kimishima K, Hashimoto T, Macromolecules, 25, 3052 (1992)

[13] Sakurai S, Mori K, Okawara A, Kimishima K, Hashimoto Y, Macromolecules, 25, 2679 (1992)

[14] Raghava RS, Smith RW, J. Polym. Sci. B: Polym. Phys., 27, 2525 (1989)

[15] Jha A, Bhowmich AK, Fujitsuka R, Inoue T, J. Adhes. Sci. Technol., 13(6), 649 (1999)