title: Modified Arrhenius equation for the frequency dependence of the transition temperature of polymers--a note on some further observations.
abstract: Activation energies obtained from differential mechanical thermal analysis work on polymers have been observed to relate to similar behaviour of diffusion coefficients of gases in polymers. Comparison of the two techniques showed the additional energy terms to be virtually identical and the pre-exponential factors to relate to segmental motion of a five-unit carbon atom.
authors.affiliation: Dental School, London Hospital Medical College, UK.
authors.forename: R L
authors.initials: RL
authors.lastname: Clarke
authors.forename: M
authors.initials: M
authors.lastname: Braden
mesh_terms: D001672:Biocompatible Materials; D005898:Glass; D011108:Polymers; D012408:Rubber; D013816:Thermodynamics
chemical_list: D001672:Biocompatible Materials; D011108:Polymers; D012408:Rubber