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Updated: Apr 28, 2026

Encapsulation and Permeability Characteristics of Plasma Polymerized Hollow Particles
Published on: August 16, 2012
Moisture sorption and permeability characteristics of polymer films: implications for their use as barrier coatings
Enosh Mwesigwa1, Abdul W Basit, Graham Buckton
1Department of Pharmaceutics, The School of Pharmacy, University of London, 29-39 Brunswick Square, London WC1N 1AX, United Kingdom.
Abstract:
Moisture sorption and permeability characteristics of polymer films were studied and their effectiveness to protect a hydrolyzable drug assessed. Cast films were prepared from Eudragit L30 D-55, Eudragit EPO, Opadry AMB and Sepifilm LP dispersions, which were also applied onto tablet cores formulated with aspirin as a model moisture sensitive active ingredient. Sorption studies were undertaken using dynamic vapour sorption, ranging between 0% and 90% RH at 25 degrees C. Cast films exhibited fast equilibration (
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