Estudio de las características mecanodinámicas de siliconas para uso podológico

Abstract

This work shows an effective methodology to characterize the creep-recovery behavior of silicones before their application in podiatry. The aim is to characterize, model and compare the creep-recovery properties of different types of silicone used in podiatry orthotics. Creep-recovery phenomena of silicones used in podiatry orthotics is characterized by dynamic mechanical analysis (DMA). Silicones are compared observing their viscoelastic properties by Functional Data Analysis (FDA) and nonlinear regression. Functional ANOVA and Kohlrausch-Willians-Watts (KWW) model with fixed and mixed effects allows to compare different silicones observing the values of fitting parameters and their physical meaning. The differences between silicones are related to the variations of breadth of creep-recovery time distribution and instantaneous deformation- permanent strain. In conclusion, it can be stated that proposed methodology based on DMA, FDA and nonlinear regression is a useful tool to characterize and chose the proper silicone for each podiatry application according to their viscoelastic properties.