Experimental evidence and theoretical an
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Kokou D. Dorkenoo; Peter H. Pfromm
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Article
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1999
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John Wiley and Sons
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English
โ 181 KB
๐ 2 views
Through time-dependent gas transport properties, we have investigated the physical aging process of amorphous glassy polymer films made from a polynorbornene. By combining the concepts of free volume and the kinetic theory of glass stabilization, it was found that the time dependence of the gas perm