Study of local and cooperative molecular movements in Poly(ethylene oxide) — Potassium thiocyanate complexes by mechanical measurements

摘要: The mechanical characteristics (internal friction and dynamic elastic modulus) of polyethylene oxide (PEO)-KSCN complexes are studied as a function temperature (120–300 K) frequency. spectrum is characterized by the presence γ-relaxation at low temperatures -relaxation high temperatures, respectively arising from local cooperative molecular motions. salt addition modifies region, which consists single loss peak in pure PEO, gives rise to two close relaxations. behavior relaxation strengths with content permits assign them motions within amorphous regions polymer. — shifts higher increasing KSCN content. Moreover, an enhancement phase polymer has been revealed concentration region.