Abstract
A comparative investigation on thermomechanical cycles including programming, cooling, unloading and heating to trigger the one-way effect (1-WE) was carried out for Veriflex® between temperature (T) and glass transition temperature (T g) at 62°C (T < T g) and 72°C (T > T g) for 140% strains and 10 min recovery time. Accumulation of strain and recovery ratios was estimated during the treatments. It turns out that the process causes an increase in irreversible strain and is associated with a corresponding decrease in intensity of the 1-WE in particular during the first thermomechanical cycle. The confocal laser scanning microscopic study shows a very little wavy surface structure evolved at 72°C. Infrared study features the chemical nature of Veriflex.
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