Abstract
Binary blends of poly(methyl methacrylate) (PMMA)/copoly(ether-ester) (COPE) elastomer were prepared under four different compositions by melt mixing technique using twin-screw extruder. The effects of COPE content on thermal and dynamic mechanical properties were investigated using various techniques such as thermogravimetric analysis (TGA), differential scanning calorimetric analysis (DSC), and dynamic mechanical analysis (DMA) for all PMMA/COPE blends. The properties of all the blends were evaluated in comparison with neat PMMA and COPE. All the blends show higher thermal stability than individual component. DSC analysis results reveal that all the blends show two glass transition temperature (Tg) values and the Tg value of PMMA has been shifted to lower side due to the presence of COPE content. The two step reduction in storage modulus corresponding to their Tg value reveal that the blends are immiscible in nature.
Highlights
In recent times, polymer blends have emerged as a frontier area of research activity in polymer technology
Authors have reported the improvement in impact strength and other properties of poly(methyl methacrylate) (PMMA) by the addition of thermoplastic elastomers (TPEs) such as thermoplastic polyurethane, Ethylene Vinyl Acetate, and COPE [14,15,16]
This paper presents the thermal and dynamic mechanical behaviours of PMMA/COPE blends
Summary
Polymer blends have emerged as a frontier area of research activity in polymer technology. Gloaguen et al [5] studied the effect of the rubber particle size on the plasticity of toughened PMMA blends. For synthetic polymers in the amorphous state, a relaxation region associated with the glass transition is observed at temperatures around and above Tg. Recently, authors have reported the improvement in impact strength and other properties of PMMA by the addition of thermoplastic elastomers (TPEs) such as thermoplastic polyurethane, Ethylene Vinyl Acetate, and COPE [14,15,16]. Its features are exceptional toughness and resilience, high resistance to creep, impact and flex fatigue, flexibility at low temperature, high elasticity, and retention of properties at elevated temperature It resists deterioration from many industrial chemicals, oils, and solvents. The main objective of this investigation is to study the thermal characteristics of PMMA/COPE blends and the effect of COPE content on the thermal stability and dynamic mechanical characteristics of the PMMA/COPE blends
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