Water-soluble copolymers. 30. Effects of molecular structure on drag reduction efficiency

McCormick, Charles L.; Hester, Roger D.; Morgan, Sarah E.; Safieddine, Abbas

doi:10.1021/ma00210a005

Cited by 48 publications

(30 citation statements)

References 6 publications

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“…Therefore, it was expected that the copolymers of MAA/2VP will be water soluble at low and high pH but will have decreased water solubility in slightly acidic/basic environments. A similar trend was reported for amphiphilic poly(MAA/diethylamino ethyl methacrylates (DEAEMA))-b-poly(methyl methacrylate) diblock terpolymers [9] and with other ampholytic systems [11,74,75]. From Figure 3, at very low pH (pH < 1), all copolymers possessed particle sizes~10 nm, indicating well-dissolved unimers.…”

Section: Ph Sensitivity Of the Methacrylic Acid/2-vinyl Pyridine (Maasupporting

confidence: 82%

Water Soluble Polymers

2018

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Section: Ph Sensitivity Of the Methacrylic Acid/2-vinyl Pyridine (Maasupporting

confidence: 82%

Water Soluble Polymers

2018

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“…McCormick and co-workers [75] extensively studied water-soluble copolymers. They synthesized four series of water-soluble acrylamide copolymers and investigated their corresponding DR effectiveness using a modified rotating disk in tube flow.…”

Section: Water-soluble Copolymermentioning

confidence: 99%

Applications of Water-Soluble Polymers in Turbulent Drag Reduction

2017

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Water-soluble polymers with high molecular weights are known to decrease the frictional drag in turbulent flow very effectively at concentrations of tens or hundreds of ppm. This drag reduction efficiency of water-soluble polymers is well known to be closely associated with the flow conditions and rheological, physical, and/or chemical characteristics of the polymers added. Among the many promising polymers introduced in the past several decades, this review focuses on recent progress in the drag reduction capability of various water-soluble macromolecules in turbulent flow including both synthetic and natural polymers such as poly(ethylene oxide), poly(acrylic acid), polyacrylamide, poly(N-vinyl formamide), gums, and DNA. The polymeric species, experimental parameters, and numerical analysis of these water-soluble polymers in turbulent drag reduction are highlighted, along with several existing and potential applications. The proposed drag reduction mechanisms are also discussed based on recent experimental and numerical researches. This article will be helpful to the readers to understand better the complex behaviors of a turbulent flow with various water-soluble polymeric additives regarding experimental conditions, drag reduction mechanisms, and related applications.

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“…H. J. Choi & Jhon, 1996;Mccormick, Heater, Morgan & Safieddine, 1990;McCormick, Hester, www.ccsenet Vol. 10, No.…”

Section: Drag Reduction Using Rotating Disk Apparatus (Rda)mentioning

confidence: 99%

Rotating Disk Apparatus: Types, Developments and Future Applications

Rashed¹,

Abdulbari²,

Salleh³

et al. 2016

MAS

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Power consumption reduction investigations attracted the attention of enormous numbers of researchers in the past few decades due to its high academic and economic impacts. The pumping power losses during the transportation of crude oils are considered as one of the main power consuming applications due to the turbulent mode of transportation. Investigating the possible solutions for this problem is expensive and time consuming due to the large apparatuses needed to simulate the flow in real pipelines. Rotating disk apparatus (RDA) is an instrument mainly comprising a rotating disk and an electrical motor to rotate the disk, which was implemented as an efficient and economical path to simulate what can be done in pipelines through generating a controlled degree of turbulence. This technique was also used in many other scientific applications due to its dynamic mode of operation. For example, a rotating disk electrode was used in electrodeposition processes and to characterize deposition film thickness and uniformity. The rotating disk reactor was employed to investigate the reaction rate between fluids and solid surfaces. The present work evaluates the RDA from different prospective and applications in order to introduce it as an efficient research tools for future dynamic investigations.

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Water-soluble copolymers. 30. Effects of molecular structure on drag reduction efficiency

Cited by 48 publications

References 6 publications

Water Soluble Polymers

Water Soluble Polymers

Applications of Water-Soluble Polymers in Turbulent Drag Reduction

Rotating Disk Apparatus: Types, Developments and Future Applications

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