Nucleation and Growth of Ordered Copolymer Structures at Reactive Interfaces between PA6 and MA--HDPE.

We have studied the effect of the interfacial chemical reaction between PA6 and MA--HDPE in static conditions at a macroscopically flat interface. Interface destabilization and the growth of instabilities, somehow similar to myelin figures observed in surfactants put in the presence of water, are observed. For the first time in this system, it is shown that ordered microphase-separated copolymer domains, whose morphologies depend on the architecture of the copolymer, namely, essentially on the relative length of the blocks on each side of the interface, may nucleate and grow at a static interface between reactive polymers.