POLYVINYLALCOHOL HYDROGELS

JIMENA SOLEDAD GONZALEZ; VERA ALEJANDRA ALVAREZ

Los Cocos Cordoba

Simposio; V Argentine-Chilean Polymer Symposium. VIII Argentine Polymer Symposium. IX Chilean Symposium of Polymer Chemistry and Physical-Chemistry ARCHIPOL 2009; 2009

Typically, the degree of PVA hydrogel cross-linking, which is intimately linked with the mechanical properties and water content, greatly influences drug release properties. The aim of this work was to analyze the effect of different parameters: PVA concentrations; the number of freezing-thawing cycles and the duration of each cycle on several properties of PVA hydrogels and to compare it with chemically cross linked ones.