Effect of polymer tacticity on the molecular structure of polyelectrolyte/surfactant stoichiometric complexes in solutions and gels.
The molecular structure of polystyrene sulphonate/CTAB stoichiometric complexes has been examined by means of small-angle neutron scattering in solutions and in the gel state for two different tacticities of the polystyrene moiety, namely atactic polystyrene and isotactic polystyrene. It is found that tacticity has no influence on the molecular structure in solution, while it plays a role in the gel state. The neutron scattering curves are interpreted with different helical models. The thermal properties of the gels are discussed in the light of the neutron scattering outcomes.
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Institut Charles Sadron, CNRS UPR 22, 6 rue Boussingault, F-67083 Strasbourg Cedex, France.
El Hasri
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Guenet
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D020001:1-Butanol / Q000737:chemistry*; D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry*; D004573:Electrolytes / Q000737:chemistry*; D005782:Gels / Q000737:chemistry*; D046911:Macromolecular Substances; D008958:Models, Molecular; D008968:Molecular Conformation; D015394:Molecular Structure; D033363:Neutron Diffraction; D009578:Nitrobenzenes / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D011137:Polystyrenes / Q000737:chemistry*; D012996:Solutions; D013237:Stereoisomerism; D013501:Surface-Active Agents / Q000737:chemistry*; D013696:Temperature
D002593:Cetrimonium Compounds; D004573:Electrolytes; D005782:Gels; D046911:Macromolecular Substances; D009578:Nitrobenzenes; D011108:Polymers; D011137:Polystyrenes; D012996:Solutions; D013501:Surface-Active Agents; C003321:polystyrene sulfonic acid; D020001:1-Butanol; C036077:nitrobenzene; D000077286:Cetrimonium