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METHOD AND DEVICE FOR STUDYING THE EFFECT OF A SUPERCRITICAL FLUID ON THE TRANSITION OF A MATERIAL FROM ONE CONDENSED PHASE TO THE OTHER AND THEIR APPLICATION IN THE CASE OF A POLYMER MATERIAL
METHOD AND DEVICE FOR STUDYING THE EFFECT OF A SUPERCRITICAL FLUID ON THE TRANSITION OF A MATERIAL FROM ONE CONDENSED PHASE TO THE OTHER AND THEIR APPLICATION IN THE CASE OF A POLYMER MATERIAL
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机译:研究超临界流体对材料从一种凝结相向另一种过渡的影响的方法和装置及其在聚合物材料中的应用
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摘要
The invention concerns the study of the effect of a supercritical fluid on the transitions of a material, which consists in varying continuously or by stages according to a predetermined programme, a first parameter value selected among the supercritical fluid pressure, the temperature of a cell containing the material sample and said sample volume, while maintaining a second of said parameters at a value selected, so as to induce the transition; and in recording the variation of the first parameter, that of the third parameter and the heat flow rate in the cell; in comparing said recordings with those obtained by replacing the supercritical fluid with a neutral fluid. The figure shows a diagram of the device for carrying out said study. The invention is in particular useful for studying a polymer material transitions.
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