Optimization of the Mechanical Properties and Water-Vapor Transmission Properties of Free Films of Hydroxypropylmethylcellulose

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Abstract
Free films of hydroxypropylmethylcellulose were prepared by a spraying technique. Methocel E5 and Methocel E15 were used in varying proportions in the preparation of films. The free films were studied for their mechanical properties and moisture permeability characteristics. A 22 factorial design was used to quantitate the effect of each polymer on the tensile strength and permeability constant of the films.

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