Abstract
The viscoelastic properties of new experimental tissue conditioners which consist of synthesized poly (butyl methacrylate) PBMA and a liquid of aromatic-ester plasticizer, without alcohol, were investigated to evaluate the effects of the molecular weight of polymer. The master curves of storage modulus G', dynamic viscosity η' and loss tangent tan δ were constructed from the viscoelastic data at different temperatures. The effects of the molecular weight of polymer on the viscoelastic properties G' and tan δ were observed particularly, in a low frequency range. However, the dynamic viscosity η' was not very sensitive to the molecular weight. These results suggest that PBMA produces more desirable properties for tissue conditioners, and that it is possible to manufacture new materials without alcohol.
