A new generation of electrolyte and pH responsive water-soluble polymers for mobility control

Conference · Fri Dec 31 04:00:00 EST 1993

OSTI ID:141342

McCormick, C L; Branham, K D; Davis, D L; Middleton, J C ^[1]

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1. Univ. of Southern Mississippi, Hattiesburg, MS (United States)

Association terpolymers of acrylamide (Am), acrylic acid (AA) and a hydrophobic comonomer, N-[(4-decyl)-phenyl]acrylamide (DPAm), have been synthesized using a micellar polymerization technique. The terpolymers in this series were found to be very close in composition, with Am approximately 65-70 mole % and AA approximately 35-40 mole%. Also, a control copolymer consisting ca. 60 mole% Am and 40 mole% AA was synthesized in the presence of surfactant. DPAm, which possesses a chromophore for accurate determination of composition, was incorporated into each terpolymer at ca 0.5 mole%. Variation of the molar ratio of the surfactant, [SDS], to that of the hydrophobe, [DPAm], (SMR) was shown to have a profound effect on the polymer solution properties. Rheological studies indicate that while all the polymers in this series behave as typical polyelectrolytes in deionized water, the degree of salt-responsive associations is dependent on the SMR in the polymerization feed. The terpolymers synthesized at low SMR exhibit a very high degree of salt-induced associations, reaching or surpassing their viscosities in deionized water. Terpolymers synthesized at high SMR behave much like classical polyelectrolytes, loosing much of their viscosities even with the addition of small amounts of salt.

• OSTI ID: 141342
• Report Number(s): CONF-930304--
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
40 CHEMISTRY
ACRYLAMIDE
ACRYLIC ACID
CHEMICAL PREPARATION
CHEMICAL PROPERTIES
ELECTROLYTES
PH VALUE
POLYMERS
RHEOLOGY