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首页> 外文期刊>Journal of Applied Polymer Science >Probe selection and description in IGC: A nontrivial factor
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Probe selection and description in IGC: A nontrivial factor

机译：IGC中的探头选择和描述：一个重要因素

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Inverse gas chromatography (IGC) has found many uses in the characterization of polymer surfaces and their interaction capabilities. The IGC method relies on the selection of vapors with which to probe polymer surfaces. Problems attached to the volatile phase in IGC are considered. One of these is the temperature dependence of the probe molecule dimensions. Experimental work shows that correcting for this temperature dependence is recommended when IGC work is carried out at temperatures removed from the ambient by more than 30degreesC. A second problem area is a possible variation in the orientation of adsorbed probe molecules. The variable orientation of linear alkane probe molecules on a polystyrene substrate is demonstrated, as is an orientational degree of freedom when diols of varying chain lengths are adsorbed on polymeric as well as on inorganic substrates. A conclusion reached from the experiments of this work is that acid-base parameters generated by the IGC method have relative but not necessarily absolute significance. Further, the orientation of polar probe molecules is dependent on the force field generated by the underlying substrate, which may be characterized by its total surface free energy. (C) 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 2323-2330, 2003. [References: 29]
机译：反相气相色谱（IGC）在表征聚合物表面及其相互作用能力方面已发现了许多用途。 IGC方法依赖于探测聚合物表面的蒸气的选择。考虑了与IGC的挥发性相有关的问题。其中之一是探针分子尺寸的温度依赖性。实验工作表明，当在与外界温度相差30摄氏度以上的温度下进行IGC工作时，建议校正这种温度依赖性。第二个问题领域是吸附的探针分子的取向可能发生变化。证明了在聚苯乙烯基质上线性烷烃探针分子的可变取向，以及当链长不同的二醇吸附在聚合物基质和无机基质上时取向自由度的变化。通过这项工作的实验得出的结论是，通过IGC方法生成的酸碱参数具有相对但不一定绝对的意义。此外，极性探针分子的取向取决于下层基底产生的力场，该力场的特征在于其总表面自由能。 （C）2003 Wiley Periodicals，Inc. J Appl Polym Sci 89：2323-2330，2003. [参考：29]

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