Research Center for Engineering of
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Title: Multi-responsive polymer conetworks capable of responding to changes in pH, temperature and magnetic field: Synthesis, characterization and evaluation of their ability for controlled uptake and release of solutes
Published In: ACS Applied Materials and Interfaces, Vol. 4, No.4, pp. 2139–2147
Description: This study deals with the preparation of novel multiresponsive (magnetoresponsive, thermoresponsive and pH-responsive) nanocomposite conetworks consisting of oleic acid-coated magnetite nanoparticles (OA·Fe3O4), hydrophilic/thermoresponsive hexa(ethylene glycol) methyl ether methacrylate (HEGMA), hydrophobic/metal binding 2-(acetoacetoxy)ethyl methacrylate (AEMA), and pH-responsive/thermoresponsive N-diethylaminoethyl methacrylate (DEAEMA) and 2-(dimethylamino)ethyl methacrylate (DMAEMA) moieties. Conventional free radical copolymerization was employed for the synthesis of random conetworks in the absence and presence of preformed OA·Fe3O4. Further, in characterization of these materials in regards to their swelling behavior in organic and aqueous solvents, thermal/thermoresponsive properties, and composition, assessment of their magnetic characteristics disclosed tunable superparamagnetic behavior. These systems were also evaluated toward their ability to adsorb and release a solute (benzoic acid) in a controlled manner upon varying the pH.
ISBN: 
ISSN:ISSN: 1944-8244
DOI:DOI: 10.1021/am300144w
Publication year: 2012
Keywords:Multiresponsive composite conetworks; magnetoresponsive networks; oleic acid coated magnetite nanoparticles; superparamagnetism; pH-triggered drug delivery
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Authors: PAPAPHILIPPOU Petri , CHRISTODOULOU Maria , MARINICA (BALAU) Oana , TACULESCU Alina , VEKAS Ladislau , CHRISSAFIS Konstantinos , KRASIA-CHRISTOFOROU Theodora ,
Type: International Journal Article
Link: http://pubs.acs.org/doi/abs/10.1021/am300144w
Laboratory: Magnetometry Laboratory
Institution: ARFT