The rheological properties describe flow behavior of film-forming solutions and may predict the film properties. Thus, the relationship was studied between the rheological properties and the hydroxypropyl methylcellulose (HPMC) film properties. HPMC solutions of glycerol, beeswax (BW) and stearic acid with two essential oils (EOs; ginger oil and plai oil) were measured for their steady shear responses and dynamic viscoelasticity before forming the films. The flow behavior of the HPMC solution with BW and EOs was shear-thinning non-Newtonian. Moreover, all the HPMC solutions had higher values for the loss modulus (G”) than for the elastic modulus (G’). The G’ and G” values of film-forming solutions with BW and EOs correlated well with the mechanical properties of the films. Furthermore, film water vapor permeability was negatively correlated with the mechanical properties of the film.
