Controlled post-synthesis grafting of thermoresponsive poly(N-isopropylacrylamide) on mesoporous silica nanoparticles

Sushilkumar A. Jadhav, Ivana Miletto, Valentina Brunella, Gloria Berlier, Dominique Scalarone

Risultato della ricerca: Contributo su rivistaArticolo in rivistapeer review

Abstract

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.

Lingua originaleInglese
pagine (da-a)1070-1075
Numero di pagine6
RivistaPolymers for Advanced Technologies
Volume26
Numero di pubblicazione9
DOI
Stato di pubblicazionePubblicato - 1 set 2015
Pubblicato esternamente

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