Transport parameters of glassy polymers: Effect of occupied and accessible volumesстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The occupied and accessible volumes have been calculated for 32 polyimides of various structures. The calculation data have been compared with the experimentally measured transport parameters for one polymer-various gases and one gas-various polymers systems. The correlation coefficients have been estimated as 90-98%. The transport parameters plotted as a function of the Kuhn segment are described by curves with maxima. The best transport characteristics are exhibited by polymers with Kuhn segment lengths of 60-80 angstrom.