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Multiple Morphologies of "Crew-Cut" Aggregates of Polystyrene- b -poly(acrylic acid) Block Copolymers
Abstract
The observation by transmission electron microscopy of six different stable aggregate morphologies is reported for the same family of highly asymmetric polystyrene-poly-(acrylic acid) block copolymers prepared in a low molecular weight solvent system. Four of the morphologies consist of spheres, rods, lamellae, and vesicles in aqueous solution, whereas the fifth consists of simple reverse micelle-like aggregates. The sixth consists of up to micrometer-size spheres in aqueous solution that have hydrophilic surfaces and are filled with the reverse micelle-like aggregates. In addition, a needle-like solid, which is highly birefringent, is obtained on drying of aqueous solutions of the spherical micelles. This range of morphologies is believed to be unprecedented for a block copolymer system.
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Cited by
Micellar Nanocarriers: Pharmaceutical Perspectives
Torchilin, V. P. (2006) · Pharmaceutical Research · doi:10.1007/s11095-006-9132-0 · Cited by 1,910
Blanazs, A., Armes, S. P., & Ryan, A. J. (2009) · Macromolecular Rapid Communications · doi:10.1002/marc.200800713 · Cited by 1,500
Block copolymer micelles: preparation, characterization and application in drug delivery
Gaucher, G., Dufresne, M.-H., Sant, V. P., Kang, N., Maysinger, D., & Leroux, J.-C. (2005) · Journal of Controlled Release · doi:10.1016/j.jconrel.2005.09.034 · Cited by 1,498
Nano-engineering block copolymer aggregates for drug delivery
Allen, C., Maysinger, D., & Eisenberg, A. (1999) · Colloids and Surfaces B: Biointerfaces · doi:10.1016/s0927-7765(99)00058-2 · Cited by 1,358
Self-citationZhang, L., & Eisenberg, A. (1996) · Journal of the American Chemical Society · doi:10.1021/ja953709s · Cited by 1,262
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Metadata
- Authors
- Zhang, L., & Eisenberg, A.
- Venue
- Science
- Published
- 1995-06-23
- Volume
- 268
- Issue
- 5218
- Pages
- 1728-1731
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2033297392
- Cited by
- 2,477
- References
- 0
- FWCI
- 25.47
- Type
- journal article
- Language
- en
- Open access
- closed
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