Rheological study of polyaniline dispersions
Written by sctunisie no commentsIn this work, polymer/polymer and polymer/solvent interactions of different PANi systems were investigated by rheometer, viscosimeter and scanning electron micrograph (SEM) techniques. Aggregation can be observed in the DMAc/DMF mixtures, through mixing a fixed amount of PANi at molecular weight =100 000. On application of steady shear micellar entanglements are ruptured and the system exhibits yield properties followed by shear thinning. From the frequency dependence of storage and loss modulus (G' and G'') it seems that the system behaves more like a viscous fluid rather than an elastic liquid. Physical network structures can also be formed by aggregation process with certain solvents.
Z. Barhoumi, N. Amdouni, J.F. Stumbé, S. Bistac
Polymer, chemical synthesis, chemical techniques, elastic properties
Pages 96-105
