PMID: 22587114May 17, 2012Paper

Striped networks and other hierarchical structures in AmBmCn (2m+n)-miktoarm star terpolymer melts

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
Jacob J K Kirkensgaard

Abstract

Using dissipative particle dynamics simulations we give numerical evidence of the formation of "striped" (or AB alternating) diamond and gyroid network structures and other hierarchical morphologies in A(m)B(m)C(n) (2m+n)-miktoarm star terpolymers where the main variable is the ratio x=n/m with m,n being the number of equal length polymer arms of A and B and C, respectively. The formed networks are purely a result of the star topology, as clearly shown by direct comparison with parallel ABC miktoarm star terpolymer simulations with matching overall composition. Progressively changing x, the system adopts the following phase sequence: three-colored lamellae, C spheres embedded in AB lamellae, C spheres decorating AB lamellae, three-colored [6.6.6] tiling, AB striped diamond network, AB striped gyroid network, AB striped hexagonally arranged cylinders, and finally AB striped globular aggregates. The striped gyroid is particularly interesting as it constitutes an inherently chiral structure made from achiral building blocks.

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Citations

Oct 23, 2015·The Journal of Physical Chemistry. B·Kai JiangQin Liang
Jul 16, 2014·Soft Matter·Jacob J K KirkensgaardStephen T Hyde
Jun 29, 2013·Faraday Discussions·Gerd E Schröder-TurkStephen T Hyde
Jan 30, 2014·Proceedings of the National Academy of Sciences of the United States of America·Jacob J K KirkensgaardStephen T Hyde

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