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<< JRScience Home     Volume 15 No.1   June 2004     << Back to Volume Home

MORPHOLOGY AND DIFFUSION STUDY OF POLYSTYRENE WITH POLY (VINYL METHYL ETHER) BLEND

 Ali Asghar Bhutto1, * and Barbara J. Gabrys2

1Department of Physics, Government Degree and Postgraduate College Larkana, Sindh, Pakistan, email: phpgaab@hotmail.com.

2Department of Continuing Education, University of Oxford, Kellog College, Oxford OX1 2JA, UK.

Abstract: The morphology and diffusion of polystyrene (PS) with poly (vinyl methyl ether) (PVME) blend have been investigated by light microscopy on both solvent-casting and mechanical blended samples. Both amorphous polymers are miscible and exhibit lower critical solubility temperature behavior. These preliminary results show that the microstructure of solvent cast samples is different than the microstructure of samples prepared by mechanical mixing. Diffusion between these two polymers was found to be very slow, indicating that a homogeneous blend cannot be achieved during a commercial polymer processing cycle.

 

Keywords:  Morphology, Diffusion, Polystyrene and Poly (vinyl methyl ether)