TY - JOUR
T1 - Controlled post-synthesis grafting of thermoresponsive poly(N-isopropylacrylamide) on mesoporous silica nanoparticles
AU - Jadhav, Sushilkumar A.
AU - Miletto, Ivana
AU - Brunella, Valentina
AU - Berlier, Gloria
AU - Scalarone, Dominique
N1 - Publisher Copyright:
© 2015 John Wiley & Sons, Ltd.
PY - 2015/9/1
Y1 - 2015/9/1
N2 - Ordered mesoporous silica nanoparticles with pore diameter of 5nm were synthesized by modification of the sol-gel synthesis method. Post-synthesis two-step grafting of thermoresponsive poly(N-isopropylacrylamide) inside the mesopores of the nanoparticles was carried out by distillation-precipitation polymerization of the methacryloxy-functionalized mesoporous nanoparticles with N-isopropylacrylamide monomer. A precise control on the quantity of the grafted polymer was achieved by changing the ratio of monomer to methacryloxy-functionalized nanoparticles. The polymer-grafted hybrid nanoparticles obtained were fully characterized by infrared spectroscopy, X-ray diffraction, dynamic light scattering, transmission electron microscopy, thermal, and gas-volumetric analyses, which clearly showed presence and thermoresponsive behavior of the polymer inside the mesopores with the preservation of the characteristic mesoporous structure of the nanoparticles.
AB - Ordered mesoporous silica nanoparticles with pore diameter of 5nm were synthesized by modification of the sol-gel synthesis method. Post-synthesis two-step grafting of thermoresponsive poly(N-isopropylacrylamide) inside the mesopores of the nanoparticles was carried out by distillation-precipitation polymerization of the methacryloxy-functionalized mesoporous nanoparticles with N-isopropylacrylamide monomer. A precise control on the quantity of the grafted polymer was achieved by changing the ratio of monomer to methacryloxy-functionalized nanoparticles. The polymer-grafted hybrid nanoparticles obtained were fully characterized by infrared spectroscopy, X-ray diffraction, dynamic light scattering, transmission electron microscopy, thermal, and gas-volumetric analyses, which clearly showed presence and thermoresponsive behavior of the polymer inside the mesopores with the preservation of the characteristic mesoporous structure of the nanoparticles.
KW - Distillation-precipitation polymerization
KW - Mesoporous silica nanoparticles
KW - Poly(N-isopropylacrylamide)
KW - Sol-gel synthesis
KW - Thermoresponsive polymer
UR - http://www.scopus.com/inward/record.url?scp=84938976365&partnerID=8YFLogxK
U2 - 10.1002/pat.3534
DO - 10.1002/pat.3534
M3 - Article
SN - 1042-7147
VL - 26
SP - 1070
EP - 1075
JO - Polymers for Advanced Technologies
JF - Polymers for Advanced Technologies
IS - 9
ER -