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首页> 外文期刊>Macromolecular symposia >Designing Issues in Polymer Foaming with Supercritical Fluids
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Designing Issues in Polymer Foaming with Supercritical Fluids

机译：超临界流体在聚合物发泡中的设计问题

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摘要

Various foaming routes were used in order to produce poly(methyl methacrylate) porous structures. The focus was, primarily, on the temperatureinduced phase separation method and the effect of foaming temperature was, first, investigated. It was observed that the pore size decreases with increase of foaming temperature up to the glass transition region, where the softening of the polymer matrix results in the increase of the average pore diameter with further increase of the foaming temperature. Subsequently, different porous structures were obtained using identical initial and final conditions, but varying the foaming route. The role of the intermediate foaming steps (which define the foaming route) on the final porous structure is discussed.
机译：为了产生聚（甲基丙烯酸甲酯）多孔结构，使用了各种发泡途径。重点主要放在温度诱导相分离方法上，首先研究起泡温度的影响。观察到，随着发泡温度升高直至玻璃化转变区域，孔径减小，其中聚合物基质的软化导致平均孔径随发泡温度的进一步升高而增大。随后，使用相同的初始条件和最终条件，但改变了发泡途径，获得了不同的多孔结构。讨论了中间发泡步骤（定义发泡路径）在最终多孔结构上的作用。

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