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

Abstract

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.

Authors:
; ; ;  [1]
  1. Univ. of Southern Mississippi, Hattiesburg, MS (United States). Dept. of Polymer Science
Publication Date:
OSTI Identifier:
5111176
Resource Type:
Journal Article
Journal Name:
Macromolecules; (United States)
Additional Journal Information:
Journal Volume: 27:2; Journal ID: ISSN 0024-9297
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Mumick, P S, Welch, P W, Salazar, L C, and McCormick, C L. Water-soluble copolymers. 56. Structure and solvation effects of polyampholytes in drag reduction. United States: N. p., 1994. Web. doi:10.1021/ma00080a003.
Mumick, P S, Welch, P W, Salazar, L C, & McCormick, C L. Water-soluble copolymers. 56. Structure and solvation effects of polyampholytes in drag reduction. United States. doi:10.1021/ma00080a003.
Mumick, P S, Welch, P W, Salazar, L C, and McCormick, C L. Mon . "Water-soluble copolymers. 56. Structure and solvation effects of polyampholytes in drag reduction". United States. doi:10.1021/ma00080a003.
@article{osti_5111176,
title = {Water-soluble copolymers. 56. Structure and solvation effects of polyampholytes in drag reduction},
author = {Mumick, P S and Welch, P W and Salazar, L C and McCormick, C L},
abstractNote = {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.},
doi = {10.1021/ma00080a003},
journal = {Macromolecules; (United States)},
issn = {0024-9297},
number = ,
volume = 27:2,
place = {United States},
year = {1994},
month = {1}
}