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Polyethylene oxide (PEO) is a water-soluble polymer often used as a model system to observe filler effects. This paper details an investigation into the physical, thermal and electrical properties of thermally aged PEO. Three molecular weight host PEOs were tested for thermal ageing resistance - 100,000 g mol-1, 400,000 g mol-1 and 1,000,000 g mol-1. Thermally aged 100,000 g mol-1 molecular weight...
When we keep an amorphous polymer at a temperature below its glass transition temperature Tg or when we vary the cooling rate of the polymer from its melting temperature to a temperature below Tg, it is not in a true thermodynamical equilibrium state and many of its properties change such as the free volume, the enthalpy and other properties. This behavior is called Physical ageing. In this paper,...
Apart from its chemical structure, mechanical properties of polymers depend mainly on polymer morphology, which is determined by the processing conditions. Exposure of the materials at elevated temperatures lead to changes in polymer morphology. The main objective of this study was to investigate the change in thermo-mechanical properties of different encapsulation materials (EVA, Ionomer) after damp...
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