Diblock copolymers consisting of flexible polystyrene and semiflexible poly(n-hexyl isocyanate), P(S-b-HIC)s, were prepared by anionic polymerization, followed by SEC fractionation. The microphase-separated structures of two P(S-b-HIC)s with ΦPHIC = 0.18 and 0.31, were investigated by TEM, SAXS and WAXS. Both two P(S-b-HIC)s exhibited hexagonally packed cylindrical structures but different cross-sectional shapes, namely, P(S-b-HIC)-0.18 has a round-shaped cross-section, while P(S-b-HIC)-0.31 has a distorted one. The latter could originate from the liquid crystalline structures of the PHIC blocks in cylindrical domains, which align obliquely to the interface of the domains.
- Yuya Doi
- Atsushi Takano
- Yushu Matsushita
