Research Article

Microspherical Particles of Solid Dispersion of Polyvinylpyrrolidone K29-32 for Inhalation Administration

Table 1

Values of Gibbs free energy of dissolution of PHE in water at different ratios of PVP K29-32 : PHE.

PVP : PHE ratio, J/mol

1 : 1
2 : 1
4 : 1
5 : 1
6 : 1
8 : 1
10 : 1