S. Hamdan
Department of Physics, University Putra Malaysia, Serdang 43400 Selangor, Malaysia
D.M.A. Hashim
Department of Chemistry, University Putra Malaysia, Serdang 43400 Selangor, Malaysia
M.Z. Abdul Rahman
Department of Chemistry, University Putra Malaysia, Serdang 43400 Selangor, Malaysia
M. Ahmad
Department of Physics, University Putra Malaysia, Serdang 43400 Selangor, Malaysia
W.F. Wan Abdullah
Department of Physics, University Putra Malaysia, Serdang 43400 Selangor, Malaysia
ABSTRACT
The thermo mechanical properties of poly (methyl methacrylate-co-styrene) copolymers as a function of strain rate and temperature in the range 10-3 to 10-1 s-1 and 30-200° C respectively were investigated. Copolymers of three different Methyl Methacrylate (MMA) and STyrene (ST) ratios with various percentages of cross-linking agents were prepared and tested. By measurement of the stress versus strain at various strain rates and temperatures, plots of flow stress/temperature (σƒ /T) versus strain rate (⋵) and log Youngs Modulus (log E) versus Temperature (T) were obtained. Plot of (σƒ /T versus ⋵ observed the Eyring equation. Increasing the amount of cross-linking agent improved the copolymer strength. The graph for log E versus T plot at constant stain rate indicates that a transition temperature exist at ~ 110 ° C. This is attributed to the glass transition i.e. the zones are interpreted in terms of visco-elastic transition.
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How to cite this article
S. Hamdan, D.M.A. Hashim, M.Z. Abdul Rahman, M. Ahmad and W.F. Wan Abdullah, 2002. The Effect of Strain Rate and Temperature onthe Mechanical Properties of Poly (Methyl Methacrylateco-Styrene) Copolymers. Journal of Applied Sciences, 2: 518-521.
DOI: 10.3923/jas.2002.518.521
URL: https://scialert.net/abstract/?doi=jas.2002.518.521
DOI: 10.3923/jas.2002.518.521
URL: https://scialert.net/abstract/?doi=jas.2002.518.521
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