Effect of Poly (Propylene-g-maleic Anhydride) on the Morphological,Rheological,and Mechanical Properties of PP/HDPE Blend

Abstract

In this study, the morphological, rheological, and mechanical properties of PP/HDPE blend compatibilized with poly (propylene-g-maleic anhydride) were studied. Necessary blends were prepared using a counter current twin-screw extruder. The blend composition ranged from 10 to 50 wt% of dispersed phase (HDPE) and compatibilizer (MAPP) with two Concentration ranges 10, 20 wt% were used for PP/HDPE (80/20) blend with respect to the dispersed phase (HDPE). The results of morphological studies shows a droplet dispersion morphology in the composition to 50wt% HDPE content, which indicates that HDPE forms a dispersed phase and PP forms a continuous phase in these composition region. Addition of the MAPP compatibilizer decreases the dispersed phase diameter. Rheological studies show that addition of the MAPP compatibilizer increases the melt viscosity, complex viscosity, storage, and loss modulus of the blends. Mechanical studies show that with increasing of HDPE concentration the tensile and impact strength first increase, and then decrease. The elongation at break decreases with increasing of HDPE concentration. Addition of the MAPP compatibilizer increases the elongation at break, tensile, and impact strength.

Keywords

polymer blends rheology morphology compatiblizer.

References

Souza, A.M.C. and Demarquette , N.R. (2002). Influence of Coalescence and Interfacial Tension on the Morphology of PP/HDPE Compatibilized Blends , Polymer, 43(14): 3959-3967.

Wilczynski, K. , Tyszkiewicz, A. and Szymaniak, Z. (2001). Modeling for Morphology Development During Single-screw Extrusion of LDPE/PS Blend, Journal of Materials Processing Technology, 109: 320-323.

The, J.W. , Rudin, A. and Keung, J.C. (1994). A Review of PP/PE Blends and Their Compatibilization, Advances in Polymer Technology , 113(1): 1.

Fujiyama, M. and Kawasaki, Y. (1991). Rheological Properties of PP/HDPE Blend Melts. I. Capillary Flow Properties, Journal of Applied Polymer Science, 42: 467.

Souza, A.M.C. and Demarquette , N.R. (2002). Influence of Composition on the Linear Viscoelastic Behavior and Morphology of PP/HDPE Blends, Polymer, 43(4): 1313-1321.

Folks, M.J. and Hope, P.S. ( 1993). Polymer Blends and Alloys, Chapman & Hall, London.

Macaubas, P.H.P. and Demarquette , N.R. (2001). Morphological and Interfacial Tensions of Immiscible PP/PS Blends Modified with Triblock Copolymers, Polymer, 42: 2543-2554.

Bolm, H.P. , The, J.W. and Rudin, A. ( 1996). PP/HDPE Blends II. Modification with EPDM and EVA, Journal of Applied Polymer Science, 60: 1405.

Kim, J.K. , Yi, D.K. and Park, C.E. (1999). Effect of the Functional Group in Homogeneity of In Situ Reactive Compatibilizer on the Morphology and Rheological Properties of Immiscible Polymer Blends , Polymer, 40: 2737-2743.

10.

Chow, W.S. , Abu Bakar, A. and Mohd Ishak, Z.A. ( 2005). Effect of Maleic Anhydride-grafted Ethylene-Propylene Rubber on the Mechanical, Rheological and Morphological Properties of Organoclay Reinforced Polyamide 6/Polypropylene Nanocomposites, European Polymer Journal, 41: 687-696.

11.

Kim, H.C. , Nam, K.H. and Jo , W.H. (1999). The Effect of Styrene-Methyl Methacrylate Block Copolymer on the Morphological Rheological and Mechanical Properties of Poly(26-dimethyl-14-phenylene ether) (PPE) and Poly(hydroxy ether of bisphenol A) (phenoxy) Blends, Polymer, 34(19): 4043-4051.