Ultralow Percolation Thresholds in Ternary Cocontinuous Polymer Blends

摘要

In binary immiscible polymer blends,as the concentration of the minor component increases,the structure percolates and its continuity also increases.At higher concentrations,closely associated with the region of phase inversion,a cocontinuous morphology is obtained and is characterized by two fully continuous phases.By selectively controlling the interface,composition,processing temperature,shear rate and annealing time of the blends,it is possible to control the pore size of the cocontinuous network over 2-3 orders of magnitude.