P. Favresse et A. Laschewsky, Synthesis and investigation of new amphiphilic poly(carbobetaine)s made from diallylammonium monomers, POLYMER, 42(7), 2001, pp. 2755-2766
A series of new hydrolytically stable poly(carbobetaine)s was synthesised v
arying the length and the position of the hydrophobic side chains, together
with their cationic analogues. The synthetic strategy avoids the presence
of residual salt in the polybetaines, thus making them well suited for mode
l studies. The betaine monomers as well as their cationic analogues bearing
the equivalent of an undecyl chain exhibit surfactant properties ("surfmer
s"). The corresponding polymers, however, which are formed by cyclopolymeri
sation, are insoluble in water, though hygroscopic. In contrast, the hydrop
hobic chains favour the solubility in alcohols and allow the formation of s
uperstructures in bulk. The poly(carbobetaine)s form homogeneous blends wit
h selected inorganic salts, to provide organic-inorganic hybrid materials.
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