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首页> 外文期刊>Polymer: The International Journal for the Science and Technology of Polymers >Milcible PS/PPE compounds: an alternative for blend phase morphology studies? Influence of the PPE content on the surface tension of PS/PPE and on the interfacial tension in PP/(PS/PPE) and POM(PS/PPE) blends
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Milcible PS/PPE compounds: an alternative for blend phase morphology studies? Influence of the PPE content on the surface tension of PS/PPE and on the interfacial tension in PP/(PS/PPE) and POM(PS/PPE) blends

机译：易溶的PS / PPE化合物：共混相形态研究的替代方法？ PPE含量对PS / PPE的表面张力以及PP /（PS / PPE）和POM（PS / PPE）共混物的界面张力的影响

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The influence of the PPE content in a miscible PS/PPE phase on the surface tension and polarity of PS/PPE mixtures, and on the interfacial tension in PP(PS/PPE) and POM(PS/PPE) blend systems was investigated. Surface tensions, #sigma#(T), and polarity, x_p, were experimentally determined by means of the pendant drop analysis technique, and were compared to the values predicted theoretically via Macleod's theory. The interfacial tension, #sigma#_12, was determined both from the dynamic breaking thread method, and from the pendant drop analysis, which is an equilibrium method. The experimental values were compared to those predicted from the harmonic mean equation. Good agreement was found between the absolute values for #sigma#_12 obtained from both the techniques. The surface tension of the PS/PPE mixtures, in a temperature range of 230-260deg C, appears to be unaffected by the presence of PPE, within the experimental error of the measurements. These findings were in good agreement with the prediction of #sigma(T) from Macleod's theory. The interfacial tension of the PP/(PS/PPE) or POM(PS/PPE) blend systems did not seem to be affected signifcantly when using a PS/PPE phase with a higher content of PPE. Finally, calculations showed that PPE causes the polarity of the PS/PPE mixtures to increase slightly from a value of 0.17 for pure PS to 0.20 for pure PPE.
机译：研究了可混溶PS / PPE相中PPE含量对PS / PPE混合物表面张力和极性以及PP（PS / PPE）和POM（PS / PPE）共混体系中界面张力的影响。表面张力＃sigma＃（T）和极性x_p通过悬垂线滴落分析技术实验确定，并与通过Macleod理论在理论上预测的值进行比较。界面张力＃sigma＃_12既可以通过动态断线方法来确定，也可以通过悬垂分析来确定，这是一种平衡方法。将实验值与根据谐波均值方程预测的值进行比较。从这两种技术获得的＃sigma＃_12的绝对值之间发现了很好的一致性。在测量的实验误差范围内，在230-260摄氏度的温度范围内，PS / PPE混合物的表面张力似乎不受PPE的影响。这些发现与麦克劳德理论对#sigma（T）的预测非常吻合。当使用PPE含量较高的PS / PPE相时，PP /（PS / PPE）或POM（PS / PPE）共混体系的界面张力似乎并未受到明显影响。最后，计算表明，PPE导致PS / PPE混合物的极性从纯PS的0.17值略微增加到纯PPE的0.20值。

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