Usando diferentes ciclos de congelamiento/descongelamiento se prepararon hidrogeles de alcohol polivinilico semicristalino 7,5 % y 12 % en concentracion. La cinetica y el grado de hinchamiento, los estados del agua y la resistencia a la traccion se evaluaron por gravimetria, calorimetria diferencial de barrido (DSC) y pruebas de traccion, respectivamente. Los resultados indican que los hidrogeles de menor concentracion y con menor numero de ciclos presentan cinetica y grado de hinchamiento mejores y menor resistencia a la traccion. Las DSC permitieron determinar la presencia de agua libre y de agua vinculada congelable. Las caracteristicas de estos hidrogeles permiten clasificarlos para diferentes aplicaciones medicas. Abstract: Using different cycles of freeze-thawing, semicrystalline polyvinyl alcohol hydrogels were synthesized in concentrations of 7.5 % and 12 %. The kinetic and grade of swelling, states of water and the tensile strength were calculated by gravimetry, by differential scanning calorimetry, DSC, and the tensile tests respectively. The results show that hydrogels with less concentration and cycles have better grade and kinetic of swelling, while the tensile strength is lower. The DSC results allow us to determine the free and freezable bound waters in our hydrogels. The characteristics obtained from these hydrogels lead their classification for different medical applications.