Published June 15, 2008 | Version v1
Journal article Metadata-only

One-step copolymerization modified magnetic nanoparticles via surface chain transfer free radical polymerization

Creators

  • 1. National Centre for Nanoscience and Technology, Beijing 100080 (China)
  • 2. Department of Materials Physics, School of Science, Xi'an Jiaotong University, Xi'an 710049 (China)

Description

Copolymer brushes growing onto magnetic nanoparticles were prepared by surface chain transfer free radical polymerization. Block copolymer brushes (P(PEGMA)-co-PNIPAAm) consist of poly(ethylene glycol) monomethacrylate (PEGMA) and N-isopropylacrylamide monomer. X-ray photoelectron spectroscopy (XPS) characterized the chemical composition of copolymer. Thermogravimetric analysis (TGA) suggested that the amount of copolymer on magnetic nanoparticles decreased with increasing azodiisobutyronitrile (AIBN). The saturation magnetization decreased significantly with increasing P(PEGMA)-co-PNIPAAm. The thermosensitive point is about 43 deg. C for magnetic nanoparticles with 33.8% P(PEGMA)-co-PNIPAAm

Availability note (English)

Available from http://dx.doi.org/10.1016/j.apsusc.2008.02.021

Additional details

Identifiers

DOI
10.1016/j.apsusc.2008.02.021;
PII
S0169-4332(08)00271-7;

Publishing Information

Journal Title
Applied Surface Science
Journal Volume
254
Journal Issue
16
Journal Page Range
p. 5170-5174
ISSN
0169-4332
CODEN
ASUSEE

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
40030102
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CHEMICAL COMPOSITION; COPOLYMERIZATION; COPOLYMERS; MAGNETIZATION; NANOSTRUCTURES; PARTICLES; POLYETHYLENE GLYCOLS; RADICALS; SURFACES; THERMAL GRAVIMETRIC ANALYSIS; X-RAY PHOTOELECTRON SPECTROSCOPY
Descriptors DEC
ALCOHOLS; CHEMICAL ANALYSIS; CHEMICAL REACTIONS; ELECTRON SPECTROSCOPY; GLYCOLS; GRAVIMETRIC ANALYSIS; HYDROXY COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC POLYMERS; PHOTOELECTRON SPECTROSCOPY; POLYMERIZATION; POLYMERS; QUANTITATIVE CHEMICAL ANALYSIS; SPECTROSCOPY; THERMAL ANALYSIS

Optional Information

Copyright
Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.