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Most immiscible polymer blends are produced by melt compounding in extruders. The melting and mixing process can generate morphologies ranging from disperse drops to fibers to lamella to cocontinuous structures. Controlling these morphologies is critical to performance of the final blend. This paper reviews recent research, from our group which reveals how these morphologies develop during compounding and how they can be stabilized with reactions at the interface between the two polymers.
Christopher W. Macosko (Sat,) studied this question.