Creation of Cylindrical Morphologies with Extremely Large Oblong Unit Lattices from ABC Block Terpolymer Blends

摘要

We investigated the phase behavior of poly(isoptene-b-styrene-b-2-vinylpyridine) (ISP) triblock terpolymer binary blends with different chain lengths of the two end-blocks as a function of phi(P)/phi(I). The two characteristic cylindrical, morphologies with new tiling patterns hare been found. There ate two essential and common features of these morphologies: (1) domains with nonconstant sizes and shapes and (2) tiling patterns that consist of triangles and pentagons. Additionally, as phi(P)/phi(I) decreases, the shape of a unit lattice changes and its size is gradually increased. Eventually, the unit lattice shows an oblong shape, Which could be typical Of the pseudodecagonal phase. Thus, the present results, are pointing toward a high possibility that a decagonal quasicrystal Could be found in the vicinity of this study.