Experimental data and development of Weibull distribution model for relative dynamic modulus profile of PMMA/TiO2 polymer nanocomposites

摘要

The study of relative dynamic modulus (E-tan delta) profile, i.e., phase transition behavior of the polymers and their composites in an absolute and methodical manner, is among one of the most eminent tasks of research for deciding endued materialistic applications. In the present study, E-tan delta profile curves of prepared thick-film PMMA/TiO2 polymer nanocomposite specimens were recorded through dynamic mechanical analyzer experimental setup. A model based on the Weibull distribution function, which is applicable specifically while specimen undergoes phase transition mechanism and breakage of secondary bonds among macromolecular polymeric chain segments in any polymeric systems occurs, is developed, and proposed to understand the phase transition characteristic curves along with the precise determination of phase transition temperature (T-g) values of specimens. The present modeling approach evinces novel and propitious tool for analytical analysis of T-g values.