Figures & data
Table 1. %DVS content of films.
Figure 1. Peak load for films containing different concentration of divalproex sodium in ethylcellulose (data represents mean ± SD, n = 3).
Figure 2. Elongation of films containing different concentration of divalproex sodium in ethylcellulose (data represents mean ± SD, n = 3).
Figure 3. Melt viscosity of ethylcellulose and films containing different concentration divalproex sodium as a function of temperature.
Figure 4. DSC thermogram of divalproex sodium (DVS) in ethylcellulase (ES), ethylcellulose, and DVS films containing different concentration divalproex sodium.
Figure 5. X-ray diffractograms of divalproex sodium, ethylcellulose, and ethylcellulose films containing different concentration of divalproex sodium.
Figure 6. Thermogravimetric profile of divalproex sodium, ethylcellulose, and 50% ethylcellulose (by dry polymer weight) in EC.
Figure 7. Polarized microscopic image(40×) of ethylcellulose film containing (A) 10% divalproex sodium of ethylcellulose by weight, (B) 20% divalproex sodium of ethylcellulose by weight, (C) 30% divalproex sodium of ethylcellulose by weight, (D) 40% divalproex sodium of ethylcellulose by weight, (E) 50% divalproex sodium of ethylcellulose by weight.
Figure 8. FTIR spectra of divalproex sodium, ethylcellulose and film with 50% divalproex sodium (by dry weight of polymer) in ethylcellulose.
Figure 9. Raman spectra of divalproex sodium, ethylcellulose and film containing 50% divalproex sodium(by polymer dry weight) in ethylcellulose.
Figure 10. X-ray diffractograms of divalproex sodium, ethylcellulose and ethylcellulose films containing different concentration of divalproex sodium (2 weeks, 45 °C/75% RH, open),.
Figure 11. DSC thermogram of divalproex sodium, ethylcellulose, and ethylcellulose films containing different concentration of divalproex sodium (2 weeks, 45 °C/75% RH, open).
