Reticulation of Block Copolymer Nanostructures from Perforation.

ABSTRACT: This work aims to examine a variety of metastable phases from the controlled self-assembly of a lamellae-forming polystyrene-block-polydimethylsiloxane (PS-b-PDMS) and its blends with a PDMS homopolymer. Kinetically trapped phases including hexagonally perforated lamellae (HPL), double diamond (DD), and double gyroid (DG) can be obtained from the blends, making it feasible to investigate the transition mechanisms from perforation to reticulation for the formation of network phases (i.e., DD and DG) as evidenced by temperature-resolved small-angle X-ray scattering experiments. Most interestingly, on the basis of the 3D reconstruction of transmission electron microscopy (TEM) images (electron tomography), an epitaxial relationship between the [001] direction of HPL and the [111

SUBMITTER: Yeh SL 

PROVIDER: S-EPMC11873956 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature