Block Copolymer Micelles in Aqueous Media

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Title:Block Copolymer Micelles in Aqueous Media
Creators:
Tuzar, Zdeněk
Kratochvíl, Pavel
Procházka, Karel
Munk, Petr
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 58, 10, pp. 2362-2369

Abstract

Micellization of di- and triblock copolymers, poly(methacrylic acid)-<i>block</i>-polystyrene and poly(methacrylic acid)-<i>block</i>-polystyrene-<i>block</i>-poly(methacrylic acid), varying in molecular weight and composition, has been studied by static and dynamic light scattering, and sedimentation velocity. Micelles with polystyrene cores were prepared in water-dioxane mixtures, rich in dioxane, and transferred into water-rich mixtures, water, and aqueous buffers via stepwise dialysis. It has been shown that, in dioxane-rich mixtures, the micellar system was in dynamic equilibrium, while in water-rich solvents, water, and aqueous buffers the micellization equilibrium was frozen and micelles behaved like autonomus particles. Under certain conditions, micelles were accompanied by independent large particles. This phenomenon, known from other micellar systems as an "anomalous micellization", is discussed.

Title:Block Copolymer Micelles in Aqueous Media
Creators:
Tuzar, Zdeněk
Kratochvíl, Pavel
Procházka, Karel
Munk, Petr
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:58
Number:10
Page Range:pp. 2362-2369
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19932362UNSPECIFIED
ID Code:353
Item Type:Article
Deposited On:06 Feb 2009 17:00
Last Modified:06 Feb 2009 16:00

Citation

Tuzar, Zdeněk; Kratochvíl, Pavel; Procházka, Karel; Munk, Petr (1993) Block Copolymer Micelles in Aqueous Media. Collection of Czechoslovak Chemical Communications, 58 (10). pp. 2362-2369. ISSN 0010-0765

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