Interaction among Spherical Polyelectrolyte Brushes in Concentrated Aqueous Solution

Yunwei Wang; Li Li; Yiming Wang; Qingshong Yang; Zhishuang Ye; Chen Hua; Yuchuan Tian; Regine von Klitzing; Xuhong Guo

doi:10.1021/acs.langmuir.9b03180

journal article·2020-03-31

Interaction among Spherical Polyelectrolyte Brushes in Concentrated Aqueous Solution

Yunwei Wang, Li Li, Yiming Wang, Qingshong Yang, Zhishuang Ye, Chen Hua, Yuchuan Tian, Regine von Klitzing, Xuhong Guo

Langmuir· Volume 36· Issue 12

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Source abstract

Abstract

Interaction among concentrated spherical polyelectrolyte brushes (SPB) dispersions in water was systematically investigated by means of small-angle X-ray scattering (SAXS), wide-angle X-ray scattering (WAXS), and rheological methods. SPB consist of a core of polystyrene (PS) and a poly(acrylic acid) (PAA) brush shell. The "polyelectrolyte peak" appeared in SAXS spectra and was observed in WAXS curves for the first time. The size of the polyelectrolyte peak and the rheological properties of SPB were found to be strongly effected by SPB concentration, pH, and ionic strength. Combined with SAXS, WAXS, and rheological results, it is confirmed that the polyelectrolyte peak is originated from local ordered structures of polyelectrolyte chains bridged by counterions in the overlapping area among SPB driven by electrostatic interactions.

Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Polymer Surface Interaction Studies · Hydrogels: synthesis, properties, applications · Dendrimers and Hyperbranched Polymers

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Chemical Engineering, Engineering Research Center of Large Scale Reactor Engineering and Technology (Ministry of Education), and International Joint Research Center of Green Energy Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China

Technical University Darmstadt, Department of Physics, Soft Matter at Interfaces, Darmstadt 64287, Germany

Engineering Research Center of Xinjiang Bingtuan of Materials Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Xinjiang 832000, P.R. China

Funding

National Natural Science Foundation of China · Key Scientific and Technological Project of Xinjiang Bingtuan

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