Water-soluble copolymers. 17. Copolymers of acrylamide with sodium 3-methacrylamido-3-methylbutanoate: synthesis and characterization

McCormick, Charles L.; Blackmon, K. P.

doi:10.1021/ma00160a004

Cited by 27 publications

(14 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This speculation is supported by data published by McCormick and Blackmon [12]. The probability of forming an azeotropic mixture from these two monomers can be perceived by the value of f c [12]. This value is obtained from eq.…”

supporting

confidence: 60%

See 1 more Smart Citation

Preparation and properties of two-component hydrogels based on 2-acrylamido-2-methylpropane sulphonic acid

Abdel‐Azim

Farahat

Atta

et al. 1998

Polym. Adv. Technol.

View full text Add to dashboard Cite

supporting

confidence: 60%

“…The obtained values of r 1 , r 2 and r 1 r 2 reveal that the two monomer species are randomly distributed in the yielded copolymer. This speculation is supported by data published by McCormick and Blackmon [12]. The probability of forming an azeotropic mixture from these two monomers can be perceived by the value of f c [12].…”

mentioning

confidence: 55%

Preparation and properties of two-component hydrogels based on 2-acrylamido-2-methylpropane sulphonic acid

Abdel‐Azim

Farahat

Atta

et al. 1998

Polym. Adv. Technol.

View full text Add to dashboard Cite

“…The PAAm was synthesized by the solution polymerization of 0.5M AAm solution in deionized water at 30°C with 0.1% (w/w) potassium persulfate as the initiator as described previously. 31 The polymerization was terminated by precipitation into acetone. The polymer product was redissolved in deionized water and dialyzed against deionized water using Spectra/Por 4 dialysis bags with molecular weight cutoffs of 12,000 -14,000 Da.…”

Section: Experimental Materialsmentioning

confidence: 99%

Water‐soluble polymers. LXXXII. Shear degradation effects on drag reduction behavior of dilute polymer solutions

Cowan

Hester

McCormick

2001

J of Applied Polymer Sci

View full text Add to dashboard Cite

Drag reduction measurements were conducted on extensively characterized poly(ethylene oxide) and poly(acrylamide) utilizing a fully automated rotating disk rheometer equipped with an optical tachometer, torque transducer, and software allowing real-time data acquisition. The instrument sensitivity allowed the study of concentrations as low as 0.1 ppm. In addition, previously immeasurable concentrationand time-dependent shear degradation effects were readily observed. A power law equation was shown to adequately correlate the percentage of drag reduction and the volume fraction for each polymer. Furthermore, an empirical shift factor was utilized to superimpose data from all the systems that were studied. By conducting measurements in the proper concentration and time domains, it was possible to extract the minimal concentration for the maximum drag reduction efficiency in the absence of shear degradation. The resulting values were significantly higher than those previously reported by our laboratories for poly(ethylene oxide) and poly(acrylamide).

show abstract

“…26,32,37,38 The DAAM copolymer has 33 mol % DAAM and 67 mol % AAm and the NaAMB copolymer has 15 mol % NaAMB. The terpolymer consists of 3.3 mol % NaAMB and 3.7 mol % AMPTAC.…”

Section: Copolymer Structural Datamentioning

confidence: 99%

Water‐soluble polymers. LXXXIII. Correlation of experimentally determined drag reduction efficiency and extensional viscosity of high molecular weight polymers in dilute aqueous solution

Cowan

Garner

Hester

et al. 2001

J of Applied Polymer Sci

View full text Add to dashboard Cite

ABSTRACT:The extensional viscosity for aqueous solutions of high molecular weight poly(acrylamide) copolymers and poly(ethylene oxide) homopolymers was measured using a laboratory-designed screen extensional rheometer. A Bingham model was developed to estimate the average local polymer coil extensional viscosity ( coil ). A strong correlation was found between the measured coil values and the polymer extensional viscosity predicted by a bead-spring model. The dilute aqueous solution drag reduction was measured with a rotating disk instrument under conditions minimizing the effects of shear degradation. Extensional viscosity and drag reduction measurements were performed in deionized water and in 0.514M sodium chloride. The relative drag reduction efficiency values (⌬) in both solvents were found to strongly correlate with measured coil values. This is the first report of the accurate prediction of drag reduction behavior for a wide range of polymer types in various solvents from the independently measured molecular parameters coil and []C. The often-used relative drag reduction efficiency expressed as the product of []C and ⌬ can now be replaced by the absolute drag reduction efficiency []C coil .

show abstract

Water-soluble copolymers. 17. Copolymers of acrylamide with sodium 3-methacrylamido-3-methylbutanoate: synthesis and characterization

Cited by 27 publications

References 6 publications

Preparation and properties of two-component hydrogels based on 2-acrylamido-2-methylpropane sulphonic acid

Preparation and properties of two-component hydrogels based on 2-acrylamido-2-methylpropane sulphonic acid

Water‐soluble polymers. LXXXII. Shear degradation effects on drag reduction behavior of dilute polymer solutions

Water‐soluble polymers. LXXXIII. Correlation of experimentally determined drag reduction efficiency and extensional viscosity of high molecular weight polymers in dilute aqueous solution

Contact Info

Product

Resources

About