Abstract
Surface and interface segregation of block copolymer micelles in a model system has been observed. The distribution of a diblock copolymer within a high molecular weight homopolymer matrix phase was determined quantitatively by forward recoil spectrometry. Cross-sectional transmission electron microscopy showed that excess copolymer segregation to the homopolymer / homopolymer and homopolymer/ vacuum interfaces was due to the preferential segregation of block copolymer micelles to these interfaces. We argue that the segregation of block copolymer micelles is a manifestation of attractive interactions between polymer brushes, and between polymer brushes and a free surface, which are important in high molecular weight homopolymer matrices.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2748-2751 |
| Number of pages | 4 |
| Journal | Macromolecules |
| Volume | 24 |
| Issue number | 10 |
| DOIs | |
| State | Published - May 1 1991 |
ASJC Scopus subject areas
- Organic Chemistry
- Polymers and Plastics
- Inorganic Chemistry
- Materials Chemistry