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Digitale Medien

Amphiphilic hyperbranched polyelectrolytes: a new type of polysoap (1999)

Bayoudh, S. ; Laschewsky, A. ; Wischerhoff, E.

Springer

Colloid & polymer science 277 (1999), S. 519-527

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ISSN: 1435-1536

Schlagwort(e): Key words Hyperbranched polymer ; Polyelectrolyte ; Polysoap ; Micellar polymer ; Ionene

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie , Maschinenbau

Notizen: Abstract Hyperbranched hydrophobized polyelectrolytes of the ionene type are prepared. They are investigated as a new type of polysoap, with respect to viscosifying behaviour, surface activity and solubilization power. Compared to linear analogues, the viscosifying effect is reduced. Compared to classical polysoap architectures, such as analogous “tail-end-type” and “head-type” polysoaps, the hyperbranched polysoaps behave rather similarly to the “head-type” ones: they exhibit notable surface activity, whereas the solubilization capacity is moderate only.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/s003960050419

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Digitale Medien

Oriented supramolecular systems-polymeric monolayers and multilayers from prepolymerized amphiphiles (1986)

Laschewsky, A. ; Ringsdorf, H. ; Schneider, J.

Weinheim : Wiley-Blackwell

Angewandte Makromolekulare Chemie 145 (1986), S. 1-17

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ISSN: 0003-3146

Schlagwort(e): Chemistry ; Polymer and Materials Science

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie , Physik

Notizen: Oriented polymeric membranes were originally prepared by polymerization or polycondensation of preoriented monomers. The introduction of hydrophilic spacer groups into the polymeric amphiphiles allowed the formation of highly ordered systems (monolayers, liposomes, multilayers) from prepolymerized amphiphiles: due to the partial decoupling of the different mobilities and orientation tendencies of the polymer chain and the amphiphilic side groups, these polymers are able to self-organize. In monolayer experiments the high order of these membranes could be demonstrated by their surface pressure area-diagrams. In addition the combination of order and mobility of these spacer groups containing polymeric amphiphiles allowed the formation of Langmuir-Blodgett-multilyers with a high layer correlation. Thus, disturbancies in highly oriented layers can be avoided normally taking place during the polymerization reaction (e.g. contractions) or oriented monomeric layers.

Zusätzliches Material: 14 Ill.