Back to Search
Start Over
Synthesis and magnetic heating characteristics of thermoresponsive poly (N-isopropylacrylamide-co-acrylic acid)/nano Fe 3 O 4 nanparticles
- Source :
- Advances in Natural Sciences: Nanoscience and Nanotechnology. 5:045007
- Publication Year :
- 2014
- Publisher :
- IOP Publishing, 2014.
-
Abstract
- In this work the synthesis of thermo-sensitive polymer coated magnetic nanoparticles and their inductive heating have been studied. Poly (N-isopropylacrylamide-co-acrylic acid) (NA) polymers were first synthesized by emulsion polymerization of poly(N-isopropylacrylamide) (NIP) in water and followed by encapsulating magnetic nanoparticles (MNPs). As increasing the concentration of acrylic acid (AA), the lower critical solution temperature (LCST) increased, so that with 150% of AA (molar ratio) the LCST reached 42 °C, which is close to the temperature of hyperthermia treatment. Magnetization and ac susceptibility measurements were conducted to depict some characteristics of the NIP-MNPs and NA-MNPs that are related with the loss power. Attempts to analyze the rate of magnetic inductive heating were performed to show the Brownian relaxation origin of additional heat source created by the magnetite nanoparticles capped with thermosensitive polymers. Our results suggest that these thermo-sensitive polymer-coated magnetic nanoparticles show a potential for hyperthermia and drug delivery application.
- Subjects :
- chemistry.chemical_classification
Materials science
Induction heating
Emulsion polymerization
Polymer
equipment and supplies
Lower critical solution temperature
Industrial and Manufacturing Engineering
Magnetization
chemistry.chemical_compound
chemistry
Chemical engineering
Polymer chemistry
Poly(N-isopropylacrylamide)
Magnetic nanoparticles
General Materials Science
Electrical and Electronic Engineering
human activities
Acrylic acid
Subjects
Details
- ISSN :
- 20436262
- Volume :
- 5
- Database :
- OpenAIRE
- Journal :
- Advances in Natural Sciences: Nanoscience and Nanotechnology
- Accession number :
- edsair.doi...........a6225460a2cd8f6ebe84f9aba066f29c