Barrier polymers physical constants

In the original Gusev Suter TST method a frozen polymer method has been used. All polymer chains are considered fixed in place, and TST-based rate constants are calculated from the energy barriers found for a penetrant to pass from one local potential energy minimum to another. This method is the most straightforward however, in polymers it yields rate constants that lead to diffusion coefficients much lower (by factors of 10 10 ) than experimental values, because neglecting chain fluctuation contributions is physically... 

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