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The phase inversion of water‐toluene emulsions stabilized with a single thermo‐ and pH‐sensitive copolymer occurs through the formation of multiple emulsions. At low pH and ambient temperature, oil in water emulsions are formed which transform into highly stable multiple emulsions at pHs immediately lower than the inversion border. At higher pHs, the emulsion turns into a water in oil one.
Graft copolymers with water-soluble backbones were prepared using two different routes: grafting onto and grafting through techniques. The corresponding syntheses, leading to ionic or non-ionic copolymers, are described here in detail and exemplified with various primary structures obtained by changing the chemical nature of the side chains or the grafting ratio. Depending on the polyelectrolyte or...
Responsive thickeners have been obtained by grafting onto poly(sodium acrylate) [PAA] macromolecular stickers characterized by a lower critical solution temperature (LCST) in water: poly(N-isopropylacrylamide) [PNIPA] or poly(ethylene oxide-co-propylene oxide) [PPO]. As these LCST polymeric side chains are able to interact specifically with silica surfaces, while the macromolecular backbone does not,...
Purpose. The aim of this work was to develop a new strategy to intro- duce poly(ethylene glycol) (PEG) into methacrylate-based polymer/DNA complexes in order to produce hemocompatible particles able to transfect cells in the presence of serum. Methods. Atom transfer radical polymerization was used to synthesize a well-defined poly(2-(dimethylamino)ethyl methacrylate) homopolymer (PDMAEMA) and...
(Nano)composites of poly( -caprolactone) (PCL) were prepared by melt blending the polymer with natural Na + montmorillonite and montmorillonite modified by hydrogenated tallowalkyl (HTA)-based quaternary ammonium cations, such as dimethyl 2-ethylhexyl HTA ammonium and methyl bis(2-hydroxyethyl) HTA ammonium. Microcomposites or nanocomposites were prepared depending on whether neat or modified...
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