Abstract
Phase separation of symmetric diblock copolymers end-grafted to a wall is studied using a Monte Carlo simulation. The nearest-neighbor repulsion between the two types of monomers is quenched from χ = 0 to χ =. 1 for chains of length N = 100 at near-melt densities. We present evidence that the two monomer species vertically segregate to form a three-layer structure that is uniform in the grafting plane. This is qualitatively different from a binary mixture of grafted homopolymers, which laterally segregates to form a structure with concentration modulated in the grafting plane at a scale of the side-to-side fluctuation distance.
Original language | English (US) |
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Pages (from-to) | 7817-7821 |
Number of pages | 5 |
Journal | Macromolecules |
Volume | 28 |
Issue number | 23 |
DOIs | |
State | Published - Nov 1 1995 |
ASJC Scopus subject areas
- Organic Chemistry
- Polymers and Plastics
- Inorganic Chemistry
- Materials Chemistry