Triblock copolyampholyte

Keywords Block copolymers ABC triblock copolymers Janus micelles Cylinder brushes Core-shell nanoparticles Graft copolymers Micelles Vesicles Copolyampholytes Polyelectrolyte block copolymers Aggregation... 

Giebeler et al. [73] investigated the polyelectrolyte complex formation of triblock copolyampholytes, polystyrene-frZock-poly( 2 or 4)-vinylpyridine)-b/oc/c-poly(methacrylic acid). By potentiometric, conductometric and turbi-dimetric titrations of acidic THF/water solutions the formation of an interpolymer complex at the isoelectric point was found, in which most likely the hydrophobic polystyrene cores are embedded in a mixed corona of the two polyelectrolyte blocks. 

Schemel pH Dependence of the functional groups of the triblock copolyampholytes [74]...

Potentiometric titration curves of AiSA triblock copolyampholytes in THF/water (2 5 weight/weight) are shown in Fig. 16 for three copolymers possessing identical mole fractions of hydrophobic polystyrene but different amounts of acidic and basic end blocks. 

Independent of the composition all triblock copolyampholytes displayed two inflection points at pH 5.5 and 9 which correspond to the deprotonation of the acid and amine hydrochloride functionalities, respectively. 

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