Analysis of Spherical Polyelectrolyte Brushes by Small Angle X-ray Scattering

Xuan-ji Yu; Wei-hua Wang; Li Li; Xu-hong Guo; Zhi-min Zhou; Fu-chen Wang

doi:10.1007/s10118-014-1456-3

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Analysis of Spherical Polyelectrolyte Brushes by Small Angle X-ray Scattering

Updated：2021-06-21

- Analysis of Spherical Polyelectrolyte Brushes by Small Angle X-ray Scattering
- Chinese Journal of Polymer Science Vol. 32, Issue 6, Pages: 778-785(2014)
- Affiliations：
  
  School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
- Author bio：
  
  **Li Li (李莉), E-mail: lili76131@ecust.edu.cn
- Funds：
- DOI：10.1007/s10118-014-1456-3
  CLC：
- Received：22 September 2013，
  
  Revised：2013-11-25，
  
  Accepted：03 December 2013，
  
  Published：2014-06
- Accepted：
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Xuan-ji Yu, Wei-hua Wang, Li Li, et al. Analysis of Spherical Polyelectrolyte Brushes by Small Angle X-ray Scattering[J]. Chinese Journal of Polymer Science, 2014, 32(6): 778-785.
DOI：

Xuan-ji Yu, Wei-hua Wang, Li Li, et al. Analysis of Spherical Polyelectrolyte Brushes by Small Angle X-ray Scattering[J]. Chinese Journal of Polymer Science, 2014, 32(6): 778-785. DOI： 10.1007/s10118-014-1456-3.

摘要

Abstract

Spherical polyelectrolyte brushes (SPBs) with PS core and poly(acrylic acid) (PAA) brushes were prepared and analyzed by SAXS in this article. A radial electron density profile of SPB was brought up

which fits well with the SAXS result and shows a core-shell structure. The effect of pH on SPB form was represented by SAXS and it proves that the chains of SPB will stretch in response to increased pH owning to the increased electrostatic repulsion. SPBs immobilized with magnetic nanoparticles or bovine serum albumin (BSA) were prepared and analyzed by SAXS as well. SAXS could characterize the changes of electron density inside brushes of SPBs due to the immobilization of magnetic nanoparticles or BSA. This provides significant supports for further application of immobilized metal nanoparticles or proteins.

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