@misc{10481/67344,
year = {2021},
month = {2},
url = {http://hdl.handle.net/10481/67344},
abstract = {Encapsulation of magnetic nanoparticles (MNPs) of iron (II, III) oxide (
Fe3O4) with a thermopolymeric
shell of a crosslinked poly(2-(2-methoxyethoxy)ethyl methacrylate) P(MEO2MA) is successfully
developed. Magnetic aggregates of large size, around 150–200 nm are obtained during the
functionalization of the iron oxide NPs with vinyl groups by using 3-butenoic acid in the presence
of a water soluble azo-initiator and a surfactant, at 70 °C. These polymerizable groups provide a
covalent attachment of the P(MEO2MA) shell on the surface of the MNPs while a crosslinked network
is achieved by including tetraethylene glycol dimethacrylate in the precipitation polymerization
synthesis. Temperature control is used to modulate the swelling-to-collapse transition volume
until a maximum of around 21:1 ratio between the expanded: shrunk states (from 364 to 144 nm
in diameter) between 9 and 49 °C. The hybrid Fe3O4@
P(MEO2MA) microgel exhibits a lower critical
solution temperature of 21.9 °C below the corresponding value for P(MEO2MA) (bulk, 26 °C). The
MEO2MA
coating performance in the hybrid microgel is characterized by dynamic light scattering and
transmission electron microscopy. The content of preformed MNPs [up to 30.2 (wt%) vs. microgel]
was established by thermogravimetric analysis while magnetic properties by vibrating sample
magnetometry.},
organization = {Andalusian Knowledge Agency},
organization = {European Commission

291780},
organization = {Ministry of Economy, Innovation, Science and Employment of the Junta de Andalucía},
organization = {Spanish "Ministerio de Economía y Competitividad" 

PID2019-103938RB-I00
CTQ2017-86125-P},
organization = {Junta de Andalucía

B-FQM-243-UGR18
P18-RT-2961},
organization = {CEI-Biotic 

CEI2013-MP-10},
publisher = {Nature Research},
title = {Synthesis of a thermoresponsive crosslinked MEO2MA polymer coating on microclusters of iron oxide nanoparticles},
doi = {10.1038/s41598-021-83608-z},
author = {Lapresta Fernández, Alejandro and Salinas Castillo, Alfonso and Capitán Vallvey, Luis Fermín},
}