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Abstract

High impact polystyrene (HIPS) series was synthesized by the mass-suspension process using polybutadiene (PB) rubbers with different cis-1,4, trans-1,4, and vinyl-1,2 isomers content. The HIPS were characterized by TEM, GPC, DMA, and DSC analyses. It was found that the dynamic mechanical properties of HIPS strongly depend upon the microstructure of PB used as a modifier due to the different tendency of PB isomers to promote grafting, cross-linking, and crystallization. The DMA for HIPS synthesized from high cis and high trans rubbers show additional relaxations at the low temperature region. The DSC results for gels extracted from these HIPS exhibited melting endotherms confirming the existence of crystalline domains.

Keywords

HIPS dynamic mechanical properties polybutadiene microstructure

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References

Rivera, M.R. , Herrera, R. , Benvenuta, J.J. and Ríos, L. Structure and Properties of Model Polybutadienes, Effect of Microstructure on Rubber Dynamic Mechanical Properties , Journal of Elastomers & Plastics, Vol. 37, July 2005.

Goyanes, S.N. (2000). Dynamic Mechanical Behavior of Atactic and High-Impact Polystyrene , J. of Appl. Polym. Sci., 75: 865-873 .

Choi, J.H. , Ahn, K.H. and Kim, S.Y. (2000). Effects of the Degree of Graft on the Tensile and Dynamic Behavior of High Impact Polystyrene , Polymer, 41: 5229-5235 .

Lin, C.S. , Ayre, D.S. and Bucknall, C.B. (1998). A Dynamic Mechanical Technique for Detecting Rubber Particle Cavitation in Toughened Plastics , J. of Mat. Sci. Let., 17: 669-671 .

Rek, V. , Holjevac-Grguric, T. and Jelcic, Z.J. (1998). Effect of Styrenebutadiene-styrene Block Copolymer on Dynamic-mechanical Properties of High-impact Polystyrene, J. M. S ., Pure Appl. Chem., A35(7/8): 1385-1402 .

Turley, S.G. and Keskkula, H. (April 1980). Effect of Rubber-phase Volume Fraction in Impact Polystyrene on Mechanical Behaviour , Polym., 21: 466-468 .

Morbitzer, L. , Humme, G. , Ott, K.H. and Zabrocki, K. (1982). Angew Makromol. Chem., 108: 123-140 .

Sardelis, K. , Michels, H.J. and Allen, G. (1983). Toughened Polystyrene Containing High cis-1, 4-Polybutadiene Rubber , J. of Appl. Polym. Sci., 28: 3255-3268 .

Yang, X. , Cai, J. , Kong, X. , Dong, W. , Li, G. and Zhou, E. (2001). Crystal To Crystal Transition of trans-1,4-Polybutadiene (TPBD) , Macrom. Chem. and Phys., 202(7): 1166-1172 .

10.

Mark, H. , Bikales, N. , Overberger, C.G. and Menges, J. (1985). Encyclopedia of Polymer Science and Engineering, Vol. 4, 2nd edn, p. 487, John Wiley & Sons, Inc .

11.

Wang, Y. , Li, G. , Leng, Y. , Yang, X. and Gu, M. (2003). Synthesis and Kinetic Behavior of Stereotriblock Polybutadiene Using Dilithium as Initiator , J. Appl. Polym. Sci., 88: 1049-1054 .

Structure and Properties of Model Polybutadienes and HIPS: Effect of Rubber Microstructure on HIPS Dynamic Mechanical Properties

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