Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance upgrade on Thursday 4th of May 2017 from 8.00am to 9.00am (BST).

During this time our websites will be offline temporarily. If you have any questions please use the feedback button on this page. We apologise for any inconvenience this might cause and thank you for your patience.



Hybrid SiO2@POSS nanofiller: a promising reinforcing system for rubber nanocomposites

Author affiliations

Abstract

A novel hybrid nanofiller, SiO2@POSS, where the silica nanoparticles (NPs) and the POSS belong to the same functional structure, has been synthesized by grafting different loadings of OctaMethacrylPOSS onto silanized commercial SiO2, using a surface reaction mediated by dicumylperoxide (DCP). The peroxide, besides anchoring the nanocages onto the silica surface, ensures the presence of methacryl functionalities in the final structure, which are still available for cross-linking reactions with a polymer host. The hybrid SiO2@POSS NPs were used to prepare, by ex situ blending, SBR nanocomposites. The dynamic-mechanical analysis performed on the cured SBR/SiO2@POSS composites indicated that the presence of POSS induces a remarkable increase of modulus either at low or at high strain, and a considerable decrease of hysteresis. This has been associated with the peculiar hybrid structure of the SiO2@POSS filler, in which silica NP aggregates are partially interconnected and surrounded by a thin shell of POSS nanounits which, thanks to their high number of reactive functionalities, promote the formation of “sticky regions” among the silica aggregates and, consequently, a tight filler network wherein rubber is immobilized. This grants a relevant reinforcement and increased hysteretic properties, suggesting SiO2@POSS as a promising filler system for decreasing the energy loss under strain and for leading to a potential reduction of filler utilization in rubber composite formulations.

Graphical abstract: Hybrid SiO2@POSS nanofiller: a promising reinforcing system for rubber nanocomposites

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 31 Jan 2017, accepted on 08 Mar 2017 and first published on 09 Mar 2017


Article type: Research Article
DOI: 10.1039/C7QM00045F
Citation: Mater. Chem. Front., 2017, Advance Article
  •   Request permissions

    Hybrid SiO2@POSS nanofiller: a promising reinforcing system for rubber nanocomposites

    M. D'Arienzo, M. Redaelli, E. Callone, L. Conzatti, B. Di Credico, S. Dirè, L. Giannini, S. Polizzi, I. Schizzi, R. Scotti, L. Tadiello and F. Morazzoni, Mater. Chem. Front., 2017, Advance Article , DOI: 10.1039/C7QM00045F

Search articles by author