Thermal processing of diblock copolymer melts mimics metallurgy

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Science  05 May 2017:
Vol. 356, Issue 6337, pp. 520-523
DOI: 10.1126/science.aam7212

When polymers behave like metals

Diblock copolymers, in which two dissimilar chains are chemically linked, can show a rich array of morphologies. These are usually attained by slow cooling to give the chains time to find their thermodynamically preferred arrangements. Rather than using slow cooling, Kim et al. rapidly quenched their materials from the disordered state and then annealed at low to moderate temperatures (see the Perspective by Stein). Different processing routes drove assembly into a variety of low-dimensional phases more typical of metal alloys.

Science, this issue p. 520; see also p. 487

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