Interpolymer complexes of poly(vinyl ether) of ethylene glycol with poly(carboxylic acids) in aqueous, alcohol and mixed solutions

Effect of temperature on aggregation/dissociation behavior of interpolymer complexes stabilized by hydrogen bonds

“…This is evident from the low turbidity values typical for true solutions. It should be noted that PAAM, 24 PVEEG 5,25,26 , and HEC 27 form relatively weak IPC. In our previous studies it was shown that PAAM, PVEEG, and HEC have low values of critical pH, below which the complexation is observed.…”

Soluble and crosslinked hydrophilic films based on compositions of poly(acrylic acid) and poly(2‐hydroxyethyl vinyl ether) for controlled drug release

“…Precipitation of IPC was not observed upon mixture of the initial polymer solutions because the pH of the starting solutions was between 5 and 7, which was higher than the critical pH value for this system for complex formation. 6,9 The films formed were clear and elastic and possessed moderate adhesiveness to the surfaces.…”

“…In our previous works, 6,9,11,17 we studied interpolymer interactions between PAA and PHEVE in aqueous and organic solutions to clarify the effects of pH, the ionic strength of the solutions, the polymer concentration, and the nature of the solvent on interpolymer complexation. The formation of IPCs with stoichiometric compositions was demonstrated.…”

Interpolymer complexes of poly(acrylic acid) nanogels with some non-ionic polymers in aqueous solutions

“…In our earlier works [5,[24][25][26][27] we have demonstrated the existence of critical pH of complexation (pH crit ) for all systems composed of a poly(carboxylic acid) and a nonionic polymer. Below this pH crit value a phase separation is observed with further precipitation of a polycomplex.…”