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首页> 外文期刊>Journal of Applied Polymer Science >Plasticization of polymers with supercritical carbon dioxide: Experimental determination of glass-transition temperatures
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Plasticization of polymers with supercritical carbon dioxide: Experimental determination of glass-transition temperatures

机译：用超临界二氧化碳增塑聚合物：玻璃化转变温度的实验测定

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High-pressure partition chromatography, a modification of the inverse gas chromatography technique, is presented as suitable technique for the study of the plasticization effect of carbon dioxide on the following polymers: poly(methyl methacrylate), polystyrene, and bisphenol A-polycarbonate. Polymers in the presence of a compressed gas or a supercritical fluid become plasticized; this means that their glass-transition temperatures (T-g's) can be lowered by 10s of degrees, which causes changes in their mechanical and physical properties. CO2-induced plasticization has an important impact on many polymer processing operations in which the T F depressions of the polymers can be evaluated. The experimental results are discussed and compared with data available from literature for each polymer we considered. (C) 2003 Wiley Periodicals, Inc. [References: 14]
机译：高压分配色谱法是对反相气相色谱法的改进，是研究二氧化碳对以下聚合物的增塑作用的合适技术：聚甲基丙烯酸甲酯，聚苯乙烯和双酚A-聚碳酸酯。在压缩气体或超临界流体存在下，聚合物会增塑;这意味着它们的玻璃化转变温度（T-g's）可以降低10s度，从而导致其机械和物理性能发生变化。 CO 2诱导的增塑对许多聚合物加工操作具有重要影响，在这些操作中可以评估聚合物的T F凹陷。对实验结果进行了讨论，并与文献中可用于我们考虑的每种聚合物的数据进行了比较。 （C）2003 Wiley Periodicals，Inc. [参考：14]

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