Abstract
We report a new morphology in a poly(isoprene-block-styrene-block-dimethylsiloxane ABC triblock copolymer. The most probable symmetry of the morphology (Ia3d) was determined from two-dimensional SAXS measurements performed on a sample with long-range order induced by an oscillatory shear field. By comparing the predictions of self-consistent field theory with TEM and SAXS and SANS powder diffraction patterns, we deduced that the morphology is a core-shell gyroid comprised of two independent and triply periodic poly(dimethylsiloxane) networks encased in poly(styrene) shells and separated by a continuous poly(isoprene) domain. Thus, this unique nanostructure divides space into five independent, three-dimensionally continuous domains.
| Original language | English |
|---|---|
| Journal | Journal of the American Chemical Society |
| Volume | 121 |
| Issue number | 37 |
| Pages (from-to) | 8457-8465 |
| ISSN | 0002-7863 |
| DOIs | |
| Publication status | Published - 1999 |
| Externally published | Yes |