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首页> 外文期刊>Journal of Applied Polymer Science >INTERACTION OF SUPERCRITICAL CARBON DIOXIDE WITH POLYMERS .2. AMORPHOUS POLYMERS
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INTERACTION OF SUPERCRITICAL CARBON DIOXIDE WITH POLYMERS .2. AMORPHOUS POLYMERS

机译：超临界二氧化碳与聚合物的相互作用.2。非晶态聚合物

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摘要

In continuation of our goal to implement supercritical fluid (SCF) technology for various applications such as precision cleaning, foaming, and impregnation of materials, a systematic study has been performed involving amorphous polymers. Eleven different polymers of amorphous nature have been subjected to supercritical carbon dioxide (SC CO2) treatment under a wide pressure and temperature range (1000-3000 psi and 25-70 degrees C, respectively). The influence and impact of such treatment on the appearance, weight change, and thermal and mechanical properties were followed systematically. In addition, the effect of treatment conditions and dimension of the samples on weight changes were also monitored. It has been found that amorphous polymers can absorb carbon dioxide to a greater extent than crystalline polymers and, in turn, the phenomenon of plasticization was also very high. In addition to morphology, the polarity of the polymer is also crucial in determining the solubility in carbon dioxide. Comparison was also made with the behavior of crystalline polymers. (C) 1996 John Wiley & Sons, Inc. [References: 13]
机译：为了实现我们的目标，即为各种应用（例如精密清洁，发泡和材料浸渍）实施超临界流体（SCF）技术，已经进行了涉及非晶态聚合物的系统研究。 11种不同性质的无定形聚合物已在较宽的压力和温度范围（分别为1000-3000 psi和25-70摄氏度）下进行了超临界二氧化碳（SC CO2）处理。系统地跟踪了这种处理对外观，重量变化以及热和机械性能的影响。另外，还监测了处理条件和样品尺寸对重量变化的影响。已经发现，无定形聚合物比结晶聚合物可以更大程度地吸收二氧化碳，并且反过来，增塑现象也非常高。除形态外，聚合物的极性对于确定在二氧化碳中的溶解度也至关重要。还与结晶聚合物的行为进行了比较。 （C）1996 John Wiley＆Sons，Inc. [参考：13]

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