TY  - JOUR
A1  - Habib, Michel
T1  - La musique à l’école
BT  - son impact neurologique
JF  - Potsdamer Schriftenreihe zur Musikpädagogik
Y1  - 2019
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-433818
IS  - 7
SP  - 31
EP  - 51
PB  - Universitätsverlag Potsdam
CY  - Potsdam
ER  - 
TY  - JOUR
A1  - Laschewsky, André
A1  - Wattebled, Laurent
A1  - Arotcarena, Michel
A1  - Habib-Jiwan, Jean-Louis
A1  - Rakotoaly, R. H.
T1  - Synthesis and properties of cationic oligomeric surfactants
N2  - Three series of new oligomeric cationic surfactants were synthesized. These amphiphiles are trimeric and tetrameric oligomeric quaternary ammonium chlorides, with spacer groups of different lengths separating the individual surfactant fragments. The properties of the compounds, such as Krafft temperatures, surface activity, micellization, viscosifying effects, foaming and solubilizing capacity, are studied. The influence of the degree of oligomerization and of the spacer group on the surfactant properties is discussed, in comparison with the analogous standard monomeric and dimeric ("gemini") surfactants. Typically, the evolution of the properties observed from standard to dimeric surfactants progresses with the trimers and tetramers, resulting for instance in extremely low critical micellization concentrations
Y1  - 2005
SN  - 0743-7463
ER  -