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Title: Polyacrylamide grafting of modified graphene oxides by in situ free radical polymerization

Highlights: • Graphene oxide (GO) was modified by chemical reactions to functionalized GO (FGO). • The FGOs and the GO were then subjected to in situ free radical polymerization. • Hydroxyl groups of GO were the most reactive grafting sites. - Abstract: Graphene oxide (GO) was modified using chemical reactions to obtain three types of functionalized GO sheets (FGO). The FGO sheets and the GO were then subjected to in situ free radical polymerization in order to study the grafting polymerization. The FGO and grafted-.FGO were analyzed with Fourier transform infrared spectroscopy, scanning electronic microscopy, thermo-gravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS). The grafting percentages in the materials were calculated using the TGA and XPS results. The FGO sheets with different functional groups exhibited different grafting abilities, and hydroxyl groups were proven to be the most reactive grafting sites for the in situ free radical grafting polymerization of polyacrylamide.
Authors:
 [1] ;  [2] ;  [2] ; ;  [1] ;  [2]
  1. Department of Applied Chemistry, School of Science, Tianjin University of Commerce, Tianjin 300134 (China)
  2. School of Science, Tianjin University, Tianjin 30072 (China)
Publication Date:
OSTI Identifier:
22420701
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 60; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CARBON OXIDES; GRAFTS; GRAPHENE; HYDROXIDES; INFRARED SPECTRA; MICROSTRUCTURE; POLYACRYLATES; POLYMERIZATION; SCANNING ELECTRON MICROSCOPY; SURFACE PROPERTIES; SYNTHESIS; THERMAL GRAVIMETRIC ANALYSIS; X-RAY PHOTOELECTRON SPECTROSCOPY