A miscibility study of ternary blends of polystyrene,tetramethylbisphenol-A polycarbonate,and poly(2,6-dimethyl-1,4-phenylene oxide) |
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Authors: | A C Su J R Fried |
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Affiliation: | (1) Institute of Materials Science and Engineering, National Sun Yat-Sen University, 80424 Kaohsiung, Taiwan, ROC;(2) Department of Chemical Engineering and the Polymer Research Center, University of Cincinnati, Cincinnati, 45221-0171 Ohio, USA |
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Abstract: | Phase behaviorof ternary blends of polystyrene (PS), tetramethylbisphenol-A polycarbonate (TMPC), and poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) at two different temperatures (i.e., 210 and 300 °C, respectively) was studied by means of differential scanning calorimetry. Miscibility of the ternary blends at either temperature was found restricted to limited compositions, in agreement with simulated spinodal curves based on published values of interaction parameters. The limited ability of PS, which is separately miscible with TMPC and PPO at 210 °C, to act as a common solvent for the immiscible TMPC/PPO pair at this temperature was explained in terms of the disparity in PS/TMPC and PS/PPO pair interactions (i.e., the '![Verbar](/content/ntx3026m77731318/xxlarge8214.gif) X effect ). |
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Keywords: | Miscibility Ternary blends Differential scanning calorimetry 1![Delta](/content/ntx3026m77731318/xxlarge916</a> <a href=) gif" alt="Delta" align="BASELINE" BORDER="0"> l effect" target="_blank">gif" alt="chi" align="MIDDLE" BORDER="0">l effect |
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