Ordered mesoporous silica nanoparticles with pore diameter of 5 nm 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.

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

JADHAV, Sushilkumar Arjun;MILETTO, IVANA;BRUNELLA, VALENTINA GIOVANNA;BERLIER, Gloria;SCALARONE, Dominique Maria
2015-01-01

Abstract

Ordered mesoporous silica nanoparticles with pore diameter of 5 nm 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.
2015
26
9
1070
1075
http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1099-1581
Distillation-precipitation polymerization; Mesoporous silica nanoparticles; Poly(N-isopropylacrylamide); Sol-gel synthesis; Thermoresponsive polymer; Polymers and Plastics
Jadhav, Sushilkumar A; Miletto, Ivana; Brunella, Valentina; Berlier, Gloria; Scalarone, Dominique
File in questo prodotto:
File Dimensione Formato  
PAT_2015.pdf

Accesso riservato

Descrizione: Articolo
Tipo di file: PDF EDITORIALE
Dimensione 937.93 kB
Formato Adobe PDF
937.93 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
OpenAccess_2015_PAT.pdf

Open Access dal 30/04/2016

Descrizione: Articolo
Tipo di file: POSTPRINT (VERSIONE FINALE DELL’AUTORE)
Dimensione 1.41 MB
Formato Adobe PDF
1.41 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1558665
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 37
  • ???jsp.display-item.citation.isi??? 31
social impact