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Conformation and arrangement of polyelectrolytes in semi-diluted solution. A study by small angle neutrons scattering; Conformation et arrangement des polyelectrolytes en solution semi-diluee. Etude par diffusion des neutrons aux petits angles

Abstract

Polyelectrolytes have particular physical and chemical properties and can thus be used for instance for petroleum production. Some of their microscopic properties have been studied in this work. With the particular zero average contrast technique, the small angle neutron scattering allows to directly know the form factors in semi-diluted solutions of polyelectrolytes where the chains are mixed. Another measure leads to the crystal structure. The electrostatic screen effects when salt is added in aqueous solutions of completely charged PSSNa solutions (f=1) (sodium polystyrene sulfonate) are studied. It seems that the chains take a vermiform conformation. Their persistence length varies as I{sup -1/3} (I is the ionic force). The hydrophobicity effects in partially charged PSSNa solutions (f<1) are given too. They lead to a progressive collapse of the chains when their charge rates decrease. The screen and condensation effects when the charge rate f of the PSSNa (f>f(Manning)) varies in a polar solvent (DMSO) are studied. The vermiform chains have the same persistence length (for each f) which varies as I{sup -1/4}. Lastly, the f variation effects in the case of a weakly charged hydrophilic poly-ion (f
Authors:
Publication Date:
Mar 25, 1997
Product Type:
Thesis/Dissertation
Report Number:
FRCEA-TH-608
Reference Number:
SCA: 020300; 360602; PA: FRC-98:002509; EDB-99:013113; SN: 98001913302
Resource Relation:
Other Information: TH: These (D. es Sc.); PBD: 25 Mar 1997
Subject:
02 PETROLEUM; 36 MATERIALS SCIENCE; ELECTROLYTES; PETROLEUM; PRODUCTION; FORM FACTORS; CRYSTAL STRUCTURE; SMALL ANGLE SCATTERING; CONFORMATIONAL CHANGES; CHEMICAL PREPARATION; QUANTITATIVE CHEMICAL ANALYSIS; GEL PERMEATION CHROMATOGRAPHY; MASS DISTRIBUTION; SODIUM BROMIDES; CONCENTRATION RATIO; HYDROPHYLIC POLYMERS; DMSO; DEUTERIUM; STRUCTURE FACTORS; AQUEOUS SOLUTIONS; CONFIGURATION
OSTI ID:
303857
Research Organizations:
Institut National des Sciences et Techniques Nucleaires (INSTN) - Centre d`Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
Other: ON: DE98732052; TRN: FR9802509
Availability:
OSTI as DE98732052
Submitting Site:
FR
Size:
185 p.
Announcement Date:

Citation Formats

Spiteri, M N. Conformation and arrangement of polyelectrolytes in semi-diluted solution. A study by small angle neutrons scattering; Conformation et arrangement des polyelectrolytes en solution semi-diluee. Etude par diffusion des neutrons aux petits angles. France: N. p., 1997. Web.
Spiteri, M N. Conformation and arrangement of polyelectrolytes in semi-diluted solution. A study by small angle neutrons scattering; Conformation et arrangement des polyelectrolytes en solution semi-diluee. Etude par diffusion des neutrons aux petits angles. France.
Spiteri, M N. 1997. "Conformation and arrangement of polyelectrolytes in semi-diluted solution. A study by small angle neutrons scattering; Conformation et arrangement des polyelectrolytes en solution semi-diluee. Etude par diffusion des neutrons aux petits angles." France.
@misc{etde_303857,
title = {Conformation and arrangement of polyelectrolytes in semi-diluted solution. A study by small angle neutrons scattering; Conformation et arrangement des polyelectrolytes en solution semi-diluee. Etude par diffusion des neutrons aux petits angles}
author = {Spiteri, M N}
abstractNote = {Polyelectrolytes have particular physical and chemical properties and can thus be used for instance for petroleum production. Some of their microscopic properties have been studied in this work. With the particular zero average contrast technique, the small angle neutron scattering allows to directly know the form factors in semi-diluted solutions of polyelectrolytes where the chains are mixed. Another measure leads to the crystal structure. The electrostatic screen effects when salt is added in aqueous solutions of completely charged PSSNa solutions (f=1) (sodium polystyrene sulfonate) are studied. It seems that the chains take a vermiform conformation. Their persistence length varies as I{sup -1/3} (I is the ionic force). The hydrophobicity effects in partially charged PSSNa solutions (f<1) are given too. They lead to a progressive collapse of the chains when their charge rates decrease. The screen and condensation effects when the charge rate f of the PSSNa (f>f(Manning)) varies in a polar solvent (DMSO) are studied. The vermiform chains have the same persistence length (for each f) which varies as I{sup -1/4}. Lastly, the f variation effects in the case of a weakly charged hydrophilic poly-ion (f place = {France}
year = {1997}
month = {Mar}
}