Table of Contents
ISRN Materials Science
Volume 2011, Article ID 921293, 5 pages
Research Article

Thermomechanical Behaviour of Poly(methyl methacrylate)/Copoly(ether-ester) Blends

1R&D Department, Central Institute of Plastics Engineering and Technology, City Centre, P.O. Debhog, Haldia, District Purba, Medinipur 721 657, India
2Plastic Processing Department, Central Institute of Plastics Engineering and Technology, IDA, Phase-II, Cherlapally, Hyderabad 500 051, India
3Department of Polymer Science and Technology, Sri Jayachamarajendra College of Engineering, Karnataka, Mysore 570 006, India

Received 30 April 2011; Accepted 24 May 2011

Academic Editors: D. Chicot, M. Padmanaban, and M. M. Pastor-Blas

Copyright © 2011 P. Poomalai et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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 ( 𝑇 𝑔 ) values and the 𝑇 𝑔 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 𝑇 𝑔 value reveal that the blends are immiscible in nature.