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JSIR Vol.67(02) [February 2008] >

Title: Effect of casting solvent on permeability of antihypertensive drugs through ethyl cellulose films
Authors: Murthy, T E Gopala Krishna
Kishore, V Sai
Keywords: Diffusion
Permeability coefficient
Water vapour
Issue Date: Feb-2008
Publisher: CSIR
Abstract: Ethyl cellulose films were prepared using acetone-methanol (8:2), chloroform-methanol (8:2), dichloromethane-methanol (8:2) and ethyl acetate-methanol (8:2) as solvents and dibutyl phthalate (40% w/w) as a plasticizer. Solvent evaporation technique gave thin uniform films. Water vapour transmission and drug diffusion rate of films followed zero order kinetics. Drug release was governed by peppas model. Diffusion exponent of release profiles (slope) has a value of n>1, which indicates non analmous transport diffusion. Solvents showed significant influence on water vapour transmission, drug diffusion and permeability of films. Ethyl acetate:methanol (8:2) showed highest permeability when compared to other films.
Page(s): 147-150
ISSN: 0022-4456
Source:JSIR Vol.67(02) [February 2008]

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