文献类型：期刊文献

中文题名：Analysis of Spherical Polyelectrolyte Brushes by Small Angle X-ray Scattering

英文题名：Analysis of Spherical Polyelectrolyte Brushes by Small Angle X-ray Scattering

作者：Xuan-ji Yu[1];Wei-hua Wang[1];李莉[1];Xu-hong Guo[1];Zhi-min Zhou[1];Fu-chen Wang[1]

机构：[1]School of Chemical Engineering, East China University of Science and Technology

年份：2014

卷号：32

期号：6

起止页码：778

中文期刊名：Chinese Journal of Polymer Science

外文期刊名：高分子科学（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2013_2014】；

基金：financially supported by the National Natural Science Foundation of China(No.20774028);the Fundamental Research Funds for the Central Universities;the Higher School Specialized Research Fund for the doctoral program(20110074110003);Shanghai Synchrotron Radiation Facility

语种：中文

中文关键词：SPB; SAXS; Nanoparticles.

外文关键词：SPB; SAXS; Nanoparticles.

摘要：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.
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.