Study of Sedimentation Velocity of Block Copolymer Micelles
Abstract
Sedimentation velocity experiments may provide many valuable insights into the nature and behavior of macromolecules and other particles. In this study we are reporting on sedimentation velocity of block copolymer micelles formed by diblock and triblock copolymers of styrene and methacrylic acid. These micelles are an object of a broad research in our laboratory. The synthesis of copolymers and evaluation of their molecular properties have been described elsewhere. All our copolymer samples formed micellar solutions when dissolved in a mixture of 80 vol.% of dioxane and 20 vol.% of water (80D/20W). In these systems, the polystyrene block are segregated in the micellar cores that are presumably swollen by dioxane. The methacrylic acid blocks form much looser shells surrounding these cores.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1993
- Accession Number
- ADA271092
Entities
People
- C. Ramireddy
- Minmin Tian
- Petr Munk
- Stephen E. Webber
Organizations
- University of Texas at Austin