Characterization of Quasi-static Mechanical Properties of Polymer Nanocomposites Using a New Combinatorial Approach (original) (raw)

2016

Abstract

ABSTRACT: Recently, it has become very important to rapidly characterize the processing-structure-property relationships in polymer nanocomposites using mini-mal quantities of expensive nanoscale fillers. To address this issue, we present a new combinatorial approach developed for characterizing the variation in mechanical properties as a function of filler composition in polymer nanocomposites. The fun-damental basis for the combinatorial approach is the generation of compositional gradients through transient operation of a twin-screw extruder (TSE). The composi-tional variation in the specimens could be rapidly predicted a priori using a convo-lution process model and was verified a posteriori using pycnometry measurements and thermogravimetric analysis. To characterize the quasi-static mechanical proper-ties along the compositional gradient, sub-scale specimens that are proportional in size to ASTM type I specimens but with a gage section that is a factor of 10 smaller, were test...

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