Jump to main content
US EPA
United States Environmental Protection Agency
Search
Search
Main menu
Environmental Topics
Laws & Regulations
About EPA
Health & Environmental Research Online (HERO)
Contact Us
Print
Feedback
Export to File
Search:
This record has one attached file:
Add More Files
Attach File(s):
Display Name for File*:
Save
Citation
Tags
HERO ID
2673913
Reference Type
Journal Article
Title
Synthesis and characterization of novel core-shell magnetic nanogels based on 2-acrylamido-2-methylpropane sulfonic acid in aqueous media
Author(s)
Atta, AM
Year
2012
Is Peer Reviewed?
Yes
Journal
Journal of Applied Polymer Science
ISSN:
0021-8995
EISSN:
1097-4628
Volume
124
Issue
4
Page Numbers
3276-3285
DOI
10.1002/app.35135
Web of Science Id
WOS:000299947100068
Abstract
Ultrafine well-dispersed Fe3O4 magnetic nanoparticles were directly prepared in aqueous solution using controlled coprecipitation method. The synthesis of Fe3O4/poly (2-acrylamido-2-methylpropane sulfonic acid) (PAMPS), Fe3O4/poly (acrylamide-co-2-acrylamido-2-methylpropane sulfonic acid) poly(AM-co-AMPS) and Fe3O4/poly (acrylic acid-co-2-acrylamido-2-methylpropane sulfonic acid) poly(AA-co-AMPS) -core/shell nanogels are reported. The nanogels were prepared via crosslinking copolymerization of 2-acrylamido-2-methylpropane sulfonic acid, acrylamide and acrylic acid monomers in the presence of Fe3O4 nanoparticles, N,N'-methylenebisacrylamide (MBA) as a crosslinker, N,N,N',N'-tetramethylethylenediamine (TEMED) and potassium peroxydisulfate (KPS) as redox initiator system. The results of FTIR and 1H-NMR spectra indicated that the compositions of the prepared nanogels are consistent with the designed structure. X-ray powder diffraction (XRD) and transmission electron microscope (TEM) measurements were used to determine the size of both magnetite and stabilized polymer coated magnetite nanoparticles. The data showed that the mean particle size of synthesized magnetite (Fe3O4) nanoparticles was about 10 nm. The diameter of the stabilized polymer coated Fe3O4 nanogels ranged from 50 to 250 nm based on polymer type. TEM micrographs proved that nanogels possess the spherical morphology before and after swelling. These nanogels exhibited pH-induced phase transition due to protonation of AMPS copolymer chains. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
Keywords
core-shell magnetic nanogels; 2-acrylamido-2-methylpropane sulfonic acid; acrylamide copolymers; polymerization; aqueous solution
Home
Learn about HERO
Using HERO
Search HERO
Projects in HERO
Risk Assessment
Transparency & Integrity