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Journal of Materials Science
Erschienen in: Journal of Materials Science 4/2014

01.02.2014

Covalent functionalization of silica nanoparticles with poly(N-isopropylacrylamide) employing thiol-ene chemistry and activator regenerated by electron transfer ATRP protocol

verfasst von: Thanh Binh Mai, Thi Nga Tran, Md. Rafiqul Islam, Jong Myung Park, Kwon Taek Lim

Erschienen in: Journal of Materials Science | Ausgabe 4/2014

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Abstract

A facile method has been developed for the synthesis of core–shell nanostructure poly(N-isopropylacrylamide) grafted on silica nanoparticles (SiO2 NPs) by using the combination of ARGET ATRP and thiol-ene click chemistry. The covalent attachment of the thermo-responsive polymer was achieved by taking advantage of the fast, robust, and high efficient thiol-ene click reaction as demonstrated by FT-IR and XPS. The ARGET ATRP provides the good conversion of the monomer in a well-controlled manner as indicated by the narrow value of PDI (1.21). The grafting amount of the polymer on SiO2 NPs was found to be ca. 18 % as determined by TGA technique. TEM images of the encapsulated SiO2 NPs suggested that the SiO2 NPs core was covered by the soft polymer layer. Interestingly, dynamic light scattering analysis revealed that the as-synthesized nanocomposites exhibited the thermo-responsive behavior with the transition temperature around 31–33 °C.
Vorheriger Artikel Atomic layer deposition of Zn1−x Mg x O:Al transparent conducting films
Nächster Artikel Electromagnetic interference shielding effectiveness of SiCf/SiC composites with PIP–SiC interphase after thermal oxidation in air

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Metadaten
Titel
Covalent functionalization of silica nanoparticles with poly(N-isopropylacrylamide) employing thiol-ene chemistry and activator regenerated by electron transfer ATRP protocol
verfasst von
Thanh Binh Mai
Thi Nga Tran
Md. Rafiqul Islam
Jong Myung Park
Kwon Taek Lim
Publikationsdatum
01.02.2014
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 4/2014
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-013-7833-4

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