Avaliação Experimental da Formulação de Álcool Gel

Abstract

Alcoholic products have application in various communities in the form of personal hygiene products and physical facilities and equipment. The objective of this project is the study of the formulation of alcohol gel to obtain a product similar to those marketed in the Brazilian national market. The main raw material for the production of alcohol gel is the concentrated alcoholic extract obtained from the alcoholic discards assigned by the Federal Revenue Service to the UFPB. The experimental tests were performed according to an experimental model of factorial planning of type 23 with central and rotational points, called DCCR. The study variables were the mass proportions of the main components of this product, being: carbopol in the range of 0.675 to 0.935% by weight, triethalonamine in the range of 0.03 to 0.11% by weight, glycerol in the range of 0.07 to 0.23% by weight. The basis for calculating these proportions was the mass of alcohol extract at 76 ° GL arbitrated for the samples. The methodology used for the production of this product was adapted from the literature. The mixing of the components was performed in a beaker with a propeller stirrer. The time and the stirring intensity were maintained constant in the maximum stirring condition for better incorporation of the components into the mass of alcoholic extract. The evaluation parameters of the formulation process and the DCCR were the determinations of viscosity and pH. The viscosity and pH results of the product obtained under an optimized operating condition were compared with the values of their commercial similarities for ascertaining material quality characteristics. All variables were significant at the significance level of 5% for the DCCR evaluation parameters, with the exception of glycerol for viscosity. Carbopol was the most significant, followed by triethalonamine. The optimum mass ratio range found for desirable pH and viscosity values (close to 7.0 and between 8,000 and 30,000 cP, respectively) of the alcohol gel components was 0.7 to 0.85% by weight carbopol , 0.07 to 0.09% by weight of triethalonamine, 0.16 to 0.18% by weight of glycerol. The product obtained in the optimized condition (0.8% carbopol, 0.07 triethalonamine and 0.16% glycerol, by weight) showed pH and viscosity values of 5.5 and 19,000 cP. Its viscosity is adequate with the Brazilian legislation of production of this type of product and close to the values of the similar commercial products. The pH of the product was lower than 6.0 due to the use of concentrated alcoholic extracts with values in the range of 5.3 to 5.7. The product obtained can be used as cleaning material for household and commercial surfaces and utensils.