Study the Effect of Structural Factors on the Rheological Behavior ofPolyacrylic acid Solutions

In the present study, several poly(acrylic acid) -based polyelectrolyte samples with different structures wereexamined from a rheological point of view. To investigate the effect of structure, the pH, and concentration of thesamples were adjusted to the same value. The viscosity and the storage and loss modulus changed similarly in thesamples. The sample containing ammonium ions had lower modulus and viscosity compared to the samplescontaining sodium ions with the same molecular weight. In similar ionic samples, lower molecular weight resultedin lower viscosity and modulus. On the other hand, the polyelectrolyte containing sulfonated copolymer exhibitedthe highest viscosity and modulus compared to the homopolymers with the same molecular weight.

کلیدواژه ها:

Rheology ، Polyelectrolyte ، Viscosity ، Molecular weight ، Polyacrylic acid