Filler Controlled Morphology in Polymer Blends

摘要: The morphology of a polymer blend can be altered very dramatically when filler is added. Depending on the mutual interactions polymers and their individual with filler, many different distributions are possible. Inverse gas chromatography was key tool to quantify polymer-solid interaction potentials in terms Lewis acid-base properties. These forecasted strengths at whisker-polymer interface coincided observed preferential adsorption. Selective adsorption minority component made it form three-dimensional web structures whiskers matrix majority component. This ability co-continuous quantified as electrical conductivity blends containing intrinsically conducting poly(3-octyl thiophene). For properly selected three-component composite increased several orders magnitude. Interactions between polyamide-6 whisker surface strong enough perturb crystallization zone by interface. exploited create virtually highly filled composites non-interacting added processing aid. That extracted left extreme comprising only polamide-6 interphase. In order collect data for derivation crystallinity gradient surface, ratio aid varied. Once beneficial phase has been achieved, successive easily rupture unless its rheological limitations considered. example, high shear rates created during injection molding ruined structure compounding poly(styrene-co-acrylonitrile)/polyamide-6/whiskers. However, ruptured could have restored annealing temperature. components comparable polymer-whisker strength substantial viscosity difference absorbed that minimizes system. Accordingly were supporting transformation low from dispersed continuous. Such transformations other induced morphological changes followed viscoelastic steady and/or harmonic shear. methodology prospects become valid instrument optimize route multicomponent systems.