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Polymer Bulletin
Erschienen in: Polymer Bulletin 1/2011

01.06.2011

A novel hydrophobically associating polyampholytes of poly(AM/AA/AMQC12): preparation, characterization, and solution properties

verfasst von: Huiyong An, Cuige Lu, Pixin Wang, Wenbo Li, Ying Tan, Kun Xu, Chang Liu

Erschienen in: Polymer Bulletin | Ausgabe 1/2011

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Abstract

A novel hydrophobically associating polyampholytes of poly(AM/AA/AMQC12) were synthesized by the free radical copolymerization of acrylamide (AM), acrylic acid (AA), and dimethyldodecyl(2-acrylamidoethyl)ammonium bromide (AMQC12) in water without any surfactants (named AAQ series). The structures of polymers were confirmed by 1H NMR and 13C NMR. The molecular weight and polydispersity were obtained using gel permeation chromatography (GPC). The hydrophobically associated properties of polymer solution were characterized by rheology, steady-state fluorescence probe, and 1H NMR relaxation time (T 2). Isoelectric points (IEPs) of polymer solution were determined by the effect of pH on viscosity below critical association concentrations (cac), and the reduced viscosities of samples at IEPs were increased in the presence of NaCl. Moreover, the steady-shear viscosity of sample at IEP was also greatly enhanced in NaCl solutions when the polymer concentration is above the cac. Meantime, the storage modulus and the loss modulus of copolymers showed that the sample behaved as gel in salt media.
Vorheriger Artikel Removal of cationic dye from aqueous solution by adsorption onto crosslinked poly(4-vinylpyridine/crotonic acid) and its N-oxide derivative
Nächster Artikel Cell-culture compatible silk fibroin scaffolds concomitantly patterned by freezing conditions and salt concentration

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Metadaten
Titel
A novel hydrophobically associating polyampholytes of poly(AM/AA/AMQC12): preparation, characterization, and solution properties
verfasst von
Huiyong An
Cuige Lu
Pixin Wang
Wenbo Li
Ying Tan
Kun Xu
Chang Liu
Publikationsdatum
01.06.2011
Verlag
Springer-Verlag
Erschienen in
Polymer Bulletin / Ausgabe 1/2011
Print ISSN: 0170-0839
Elektronische ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-011-0465-4

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