Potencial Applications of Poly(vinyl alcohol)-Congo Red Aqueous Solution and Hydrogels as Liquids for Hydraulic fracturing

VEGA ISABEL N.; FERNANDEZ EMILIANO; MIJANGOS CARMEN; D'ACCORSO NORMA B.; LOPEZ DANIEL

JOURNAL OF APPLIED POLYMER SCIENCE

Wiley InterScience

Año: 2008 vol. 110 p. 695 - 700

0021-8995

ABSTRACT: The authors report on the viscoelastic characterization of guar hydrogels obtained through complexation reactions with borax ions. These gels are compared with hydrogels obtained from poly(vinyl alcohol) of different degree of hydrolysis through complexation reactions with congo red. The effect of the degree of hydrolysis and both, the concentration of PVA and the concentration of congo red, on the viscoelastic properties of the hydrogels is analyzed. The potential use of the PVA-based hydrogels as hydraulic fracturing liquids is discussed in relation to the commonly used fracturing liquid based on the guar– borax system. VVC 2008 Wiley Periodicals, Inc. J Appl Polym Sci 110: 695–700, 2008The authors report on the viscoelastic characterization of guar hydrogels obtained through complexation reactions with borax ions. These gels are compared with hydrogels obtained from poly(vinyl alcohol) of different degree of hydrolysis through complexation reactions with congo red. The effect of the degree of hydrolysis and both, the concentration of PVA and the concentration of congo red, on the viscoelastic properties of the hydrogels is analyzed. The potential use of the PVA-based hydrogels as hydraulic fracturing liquids is discussed in relation to the commonly used fracturing liquid based on the guar– borax system. VVC 2008 Wiley Periodicals, Inc. J Appl Polym Sci 110: 695–700, 2008VVC 2008 Wiley Periodicals, Inc. J Appl Polym Sci 110: 695–700, 2008 Key words: PVA; guar; hydrogels; viscoelastic properties; fracturing liquidsPVA; guar; hydrogels; viscoelastic properties; fracturing liquids