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Title of Journal: Polym Bull

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Abbravation: Polymer Bulletin

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Springer-Verlag

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DOI

10.1002/9781118265581.ch2

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1436-2449

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Structure–rheology relationship in complex quatern

Authors: A Filimon E Avram S Ioan
Publish Date: 2012/10/21
Volume: 70, Issue: 6, Pages: 1835-1851
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Abstract

Polymer chains consisting of watersoluble polysulfones with various amounts of ionic chlorine have been prepared via the quaternization reaction of chloromethylated polysulfones with NNdimethylethanolamine Rheological investigations have reflected the importance of electrostatic interactions hydrogen bonding and association phenomena from the ternary systems consisting of a protonacceptor polymer polysulfones with different ionic chlorine content a protondonor solvent NNdimethylformamide and a protondonor solvent methanol The specific interactions the polyelectrolyte effect induced by enhanced dissociation of the ionizable groups and mixed solvents’ quality modify the rheological functions ie dynamic viscosity elastic shear modulus and viscous shear modulus as well as the thermodynamic parameters obtained from the rheological properties such as apparent energy of activation and flow activation entropy These results were correlated with the surface properties of the polysulfonic films formed from solutions in solvent/nonsolvent mixtures

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