Water-soluble copolymers. 56. Structure and solvation effects of polyampholytes in drag reduction

Journal Article · Mon Jan 17 00:00:00 EST 1994 · Macromolecules; (United States)

DOI:https://doi.org/10.1021/ma00080a003· OSTI ID:5111176

Mumick, P S; Welch, P W; Salazar, L C; McCormick, C L ^[1]

---

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

Water-soluble polyampholytes based on acrylamide (AM), sodium 2-acrylamido-2-methyl-propanesulfonate (NaAMPS), (2-acrylamido-2-methylpropyl) timethylammonium chloride (AMPTAC), sodium 3-acrylamido-3-methylbutanoate (NaAMB), and 30((2-acrylamido-2-methylpropyl)dimethylammonio)-1-propanesulfonate (AMPDAPS) have been synthesized and characterized. The molecular weights of the polymers range from 1.4 [times] 10[sup 6] to 21.5 [times] 10[sup 6]. Almost all the polyampholytes showed higher intrinsic viscosities at higher solvent ionic strength. The drag reduction behavior of high and low charge density polyampholytes and polybetaines was examined with a rotating-disk rheometer. All the polymers exhibited higher drag reduction at increased solvent ionic strength. The poly(sulfobetaines) (copolymers of AM and AMPDAPS) were found to be the most efficient drag reducers, and the high charge density polyampholyte (copolymer containing 50 mol % each of AMPTAC and NaAMPS) was the least efficient. Experimental data indicate that theoretical models of drag reduction should include parameters for polymer-solvent interactions and molecular associations.

• OSTI ID: 5111176
• Journal Information: Macromolecules; (United States), Vol. 27:2; ISSN 0024-9297
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
COPOLYMERS
MOLECULAR STRUCTURE
RHEOLOGY
CHEMICAL PREPARATION
CORRELATIONS
DRAG
EXPERIMENTAL DATA
FRICTION FACTOR
DATA
INFORMATION
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYMERS
SYNTHESIS
360606* - Other Materials- Physical Properties- (1992-)
400201 - Chemical & Physicochemical Properties