Some Mechanical and Thermal Properties of PC/ABS Blends
- 1
- 2
Abstract
A series of blends of Acrylonitrile-Butadiene-Styrene (ABS) and Polycarbonate (PC) were prepared and some of their thermal and mechanical properties were determined. The Young’s modulus changed gradually and monotonically with the polycarbonate content. This effect was tentatively explained as the antiplasticization of the PC which is ascribed to the chain mobility, which permits the PC chains to pack more tightly, to the secondary cross-linking between the PC chains, or to the secondary attachment of bulky side-chains to the PC, thus producing steric hindrance to the rotation of the PC main chains. The experimental values found for the impact strength were intermediate between those of the neat polymers, depending upon the dispersed rubber particles of butadiene in the matrix of SAN (Styrene-Acrylonitrile), and the dispersed PC particles which generally make the ABS more brittle. A maximum value of about 88 KJ/m<sup>2</sup> for the impact strength was observed for the blend with 90% PC. This may be attributed to the strong polymer-polymer interactions for this particular composition. The variations in the heat deflection temperature HDT and the Vicat softening point with the blend composition were very similar, and allowed us to assume that the phase inversion between the matrices of the two polymers takes place at 50% PC. The morphology of the blends revealed by SEM observation, show a co-continuous structure.
- L. A. Utracki, “Polymer Blends Handbook,” Kluwer Academic Publisher, Amsterdam, 2002.
- F. Nordgren and M. Nyquist, “FE-Modelling of PC/ABS—Experimental Tests and Simulations,” Master’s Dissertation, Division of Solid Mechanics, Lund University, Lund, 2006.
- L. A. Utracki and B. D. Favis, “Polymer Alloys and Blends,” In: P. N. Cheremisinoff, Ed., Handbook of Polymer Science and Technology, Marcel Dekker, Inc., New York, 1989, pp. 121-201.
- A. Pavan, T. Riccò and M. Rink, “High Performance Polymer Blend,” Materials Science and Engineering, Vol. 48, No. 9, 1981, pp. 9-15. doi:10.1016/0025-5416(81)90060-4
- R. D. Deanin and R. R. Geoffroy, “Major Thermoplastic Polyblends: Compatibility and Practical Properties,” Organic Coating and Plastics Chemistry, 1977, pp. 1-7.
- J. M. Martínez, J. I. Eguiazábal and J. Nazábal, “Phase Behavior of Mechanical Properties of Injection Molded PET/Par Blends,” Journal of Applied Polymer Science, Vol. 45, No. 7, July 1992, pp. 1135-1143.
- H. Suarez, J. W. Barlow and D. R. Paul, “Mechanical properties of ABS/polycarbonate blends,” Journal of Applied Polymer Science, Vol. 29, No. 11, November 1984, pp. 3253-3259. doi:10.1002/app.1984.070291104
- A. Hassan and W. Y. Jwu, “Mechanical Properties of High Impact ABS/PC Blends—Effect of Blend Ratio,” Polymer Symposium, Kebangsaan Ke-V Hotel Residence, August 2005, pp. 23-24.
- J. Bastida, I. Eguiazábal and J. Nazábal, “The Vicat Softening Temperature as a Method to Assess the Phase Behaviour of Amorphous Polymer Blends,” Polymer Testing, Vol. 12, No. 3, 1993, pp. 233-242. doi:10.1016/0142-9418(93)90005-A
- M. L. Barthes, “Régénération d’ABS et de PC Issus de DEEE sous Forme d’Alliages de Polymères Techniques ou de Nanocomposites,” Ph.D. Dissertation, Mechanic and Engineering, Doctoral School of Physical Sciences for Engineering, Bourdeaux, 2010.
- M. M. K. Khan, R. F. Liang, R. K. Gupta and S. Agarwal, “Rheological and Mechanical Properties of ABS/PC Blends,” Korea-Australia Rheology Journal, Vol. 17, No. 1, March 2005, pp. 1-7.
- T. Matchimapiro, P. Sornthummalee, T. Pothisiri and S. Rimdisit, “Impact Behaviors and Thermomechanical Pro- perties of TPP-Filled Polycarbonate/Acrylonitrile-Buta- diene-Styrene Blends,” Journal of Metals, Materials and Minerals, Vol. 18, No. 2, 2008, pp. 187-190.