Non-stoichiometric polyelectrolyte complexes: New, water soluble macromolecular compounds

Kharenko, Olesya A.; Kharenko, A.V.; Kalyuzhnaya, R.I.; Izumrudov, Vladimir A.; Kasaikin, V.A.; Зезин, А. Б.; Kabanov, V.A.

doi:10.1016/0032-3950(79)90134-5

Cited by 29 publications

(21 citation statements)

References 7 publications

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“…The synthesis and fractionation of poly(acrylic acid) (PAA) have been described elsewhere 6. The fractions with weight‐average molecular mass ( M w ) 2.2 × 10 5 , 4.3 × 10 4 and 1.0 × 10 3 ( P w = 3000, 600 and 140, respectively) were used.…”

Section: Methodsmentioning

confidence: 99%

Self‐assembly of ionic amphiphiles on polyelectrolyte chains

Kabanov

Зезин

Kasaikin

et al. 2003

Polymer International

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The formation and structure of water‐soluble complexes of partly neutralized poly(acrylic acid) (PA) and poly(diallyldimethylammonium chloride) (PDADMAC) with oppositely‐charged surfactants [tetradecyltrimethylammonium bromide (C14AB) and sodium dodecyl sulfate (SDS)] have been studied by elastic and quasi‐elastic laser light‐scattering, high‐speed sedimentation and viscometry techniques. It was shown that minimum aggregation number (nmin) of the surfactant ions in the complex micelle depends on the chemical structure of the polyelectrolyte. In particular, C14AB interacting with PA in dilute water solutions forms PA bound micelles with nmin of 102 similar to spherical micelles formed by free C14AB. This is in contrast to soluble PDADMAC–SDS complex species, which are most probably vesicles, each containing ca 105 surfactant ions instead of 102 characteristic for free SDS spherical micelles. A shift from a dilute to a semi‐dilute solution regime with respect to the free PDADMAC results in drastic rearrangement of the PDADMAC–SDS complex structure. Copyright © 2003 Society of Chemical Industry

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Section: Methodsmentioning

confidence: 99%

Self‐assembly of ionic amphiphiles on polyelectrolyte chains

Kabanov

Зезин

Kasaikin

et al. 2003

Polymer International

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“…A thorough study of equilibria (I) and (II) for interpolyelectrolyte complexation between PDMAEMA of high molecular weight and oligo-or polyphosphates (OPs or PPs) with different degrees of polymerization was carried out using analytical ultracentrifugation (AUC) and potentiometric titration. 46 The combination of these techniques allowed for the determination of the fraction F of PP chains, which were coupled to PDMAE-MA, and the conversion y for the formation of interpolymer salt bonds at different pH-values. F characterizes equilibrium (I) while y describes equilibrium (II).…”

Section: Interpolyelectrolyte Complexes -Formation and Stabilitymentioning

confidence: 99%

Micellar interpolyelectrolyte complexes

2012

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Interpolyelectrolyte complexes (IPECs) are typically formed when two polyelectrolytes of opposite charge are mixed together in solution. We present an overview of different strategies for the preparation of micellar IPECs, i.e., structures where such IPEC domains form the core or the shell of micelles. In addition, vesicular architectures are considered, where the IPEC domain forms a membrane layer. One intriguing feature of IPECs is that their formation can be directed, their stability towards changes in pH or ionic strength can (to a certain extent) be predicted, and their size can be controlled. Especially the use of ionic/non-ionic block copolymers offers unique potential for the preparation of well-defined and sophisticated nanostructured materials. We also discuss possible applications, especially in the field of life sciences, including biocompatibility, the controlled uptake/release of guest substances, the immobilization of enzymes, or the controlled formation of inorganic/organic hybrid materials.

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“…[29] The polydispersity of the samples was M n values were determined by gel permeation chromatography using PW-6000, Toyo Soda. The sample with a molecular mass of 2 000 Da was purchased from Aldrich (USA) and used without purification.…”

Section: Poly(sodium Acrylate)mentioning

confidence: 99%