Estudo da estabilidade físico-química do sabonete em barra contendo o álcool polivinílico (PVA)

Abstract

This work sought to present an alternative additive, polyvinyl alcohol (PVA), a being used in bar soaps focused on improving, mainly, crack reduction. PVA is a polymer capable of absorbing a large amount of water and was incorporated to the requirements of 0.25%, 0.5% and 1.0% in the supply of soaps in order to observe the reduction of cracks in the final product. The soaps were evaluated in the crack tests where the 0.25% and 0.5% procedures were analyzed more satisfactorily with level I cracks. No texturometer where the hardness of soaps with and without PVA was evaluated that soaps with 1.0% independent PVA a less solid structure after completing the crack test obtained in cracks level III and soaps with 0.5% independent PVA a more rigid structure after being washed and classified as de level I. Soaps with 0.25% and 1.0% PVA also dissipation of malleability after the crack test due to the limit value of adding PVA that have not been reached or exceeded. Finally, scanning electron microscopy analyzes were performed with an evaluation criterion such as soap structures and the presence of reticulated structures from the hydrogel with greater or lesser uniformities was verified. Soaps with 0.5% PVA results as expected with level I cracks.