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Miscibility
studies of PVC/PMMA and PS/PMMA blends by dilute solution
viscometry and FTIR
Mohammad
Saleem Khan1*, Raina Aman Qazi1 and
Mian Said Wahid2
1Polymer
Chemistry Laboratory, National Center of Excellence in
Physical Chemistry, University of Peshawar, Peshawar 25120,
Pakistan.
2Government
Postgraduate
Jehanzeb College, Saidu Sharif, Swat, Pakistan.
*Corresponding author. E-mail:
msalkhan@yahoo.com
Accepted 24 April 2008 |
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The effect
of polymer-polymer interactions on the miscibility of PVC/PMMA and PS/PMMA
blends were studied in a broad composition range using viscosity and
FTIR techniques. From the viscometric data, the presence of attractive
forces among different polymers was evaluated according to Sun et al.
(1990), by the determination of α parameter. Based on sign convention
involved in the criterion, PS/PMMA system was found as immiscible while
miscibility was observed in PVC/PMMA blend. FTIR analysis also supports
the viscometric data.
Key
words:
Viscosity, polymer blends, poly (methyl methacrylate), poly (vinyl
chloride), polystyrene, fourier transform infrared spectroscopy. |
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