Nanosize Aggregates of Block Copolymers of Styrene and Hydrogenated Butadiene in Water
Autor: | Stanislav Rangelov, Petr Munk, Zdenek Tuzar |
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Rok vydání: | 1998 |
Předmět: | |
Zdroj: | International Journal of Polymer Analysis and Characterization. 4:435-446 |
ISSN: | 1563-5341 1023-666X |
DOI: | 10.1080/10236669808009727 |
Popis: | Three-block copolymer polystyrene-block-hydrogenated polybutadiene-block-poly-styrene forms micelles with aliphatic cores and polystyrene shells in dioxane. When a solution of these micelles with an appropriate stabilizer (e.g., a block copolymer of ethylene oxide and propylene oxide) is injected into excess water, a stable dispersion results. The resulting particles have a hydrodynamic radius around 55 nm and particle molecular weight is hundreds of millions. The mechanism of the particle formation and their structures are discussed. |
Databáze: | OpenAIRE |
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