Stability of Boron Nitride Nanosphere Dispersions in the Presence of Polyelectrolytes

Boron nitride nanospheres (BNNSs) were functionalized with polyelectrolytes. The effect of the polyelectrolyte dose and ionic strength on charging aggregation properties was investigated. At appropriate doses, charge neutralization occurred, whereas by increasing dose, reversal observed. complete coating particles indicated a plateau in ζ-potential values, which do not change significantly beyond corresponding to onset such plateau. dispersions highly aggregated around point, while at lower or higher stable. salt-induced experiments revealed that coatings contribute colloidal stability particles, namely, critical coagulation concentrations deviated from one determined for bare BNNSs. presence electrostatic steric interparticle forces induced adsorbed chains assumed. obtained results confirm comprehensive investigation BNNS is crucial design stable unstable polyelectrolytes are suitable agents both stabilization destabilization dispersions, depending purpose their application.