首页> 外文期刊>Journal of Applied Polymer Science >TRANSPORT PROPERTIES OF DICHLOROMETHANE IN GLASSY POLYMERS .6. POLY(ETHYLENE TEREPHTHALATE)
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TRANSPORT PROPERTIES OF DICHLOROMETHANE IN GLASSY POLYMERS .6. POLY(ETHYLENE TEREPHTHALATE)

机译:二氯甲烷在玻璃态聚合物中的传输特性.6。聚对苯二甲酸)

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摘要

Sorption and diffusion of dichloromethane vapor in amorphous poly(ethylene terephthalate) (PET) were investigated, with the aim of studying how aging phenomena, at different temperatures, influence the transport properties. It has been found that aging produces the appearance of non-Fickian behavior in the sorption curves as well as the reduction of the diffusion coefficients. Furthermore, aging at 60 degrees C reduces the sorption of vapor at low activity, and this led to the hypothesis of the presence of ordered domains in the aged samples. In this case, the process of solvent-induced crystallization is favored, and it appears at lower activity. (C) 1996 John Wiley & Sons, Inc. [References: 16]
机译:研究了二氯甲烷蒸气在无定形聚对苯二甲酸乙二醇酯(PET)中的吸附和扩散,目的是研究在不同温度下的老化现象如何影响传输性能。业已发现,老化会在吸附曲线上产生非菲克式的行为,并降低了扩散系数。此外,在60摄氏度下老化会降低低活性下蒸气的吸附,这导致了在老化样品中存在有序域的假设。在这种情况下,有利于溶剂诱导的结晶过程,并且它以较低的活性出现。 (C)1996 John Wiley&Sons,Inc. [参考:16]

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