Film Composition

(chitosan/PVA)

Neutralize

(to pH 7)

Swelling

(%w/w)

100:0

Yes

147% ± 12%

50:50

Yes

172% ± 10%

35:65

Yes

201% ± 11%

25:75

Yes

207% ± 13%

5:95

Yes

206% ± 16%

0:100

Yes

190% ± 2%

50:50

No

Dissolves