The present study provides a comprehensive investigation at the micro and nanoscale of the interface between hybrid SiO2@POSS nanofiller, where silica nanoparticles (NPs) and POSS nanocages are intimately interconnected, and Styrene Butadiene Rubber (SBR). SEM and AFM inspection and, more in depth, solid state 1H NMR revealed a remarkable fraction of rigid rubber close to the SiO2@POSS surfaces, which increases with the curing temperature. Instead, a reduced amount of immobilized rubber was detected for SBR/SiO2+POSS nanocomposites, obtained by simply mixing SBR, SiO2 and POSS. The results allowed us to propose a model for the network formation in C-SBR/SiO2@POSS. This is based on the progressive activation by dicumylperoxide (DCP) of the methacryl functionalities of POSS nanounits which, being closely connected to SiO2 NPs in SiO2@POSS, promote crosslinking in proximity of the filler surfaces, and lead to the generation of a tight network strongly bonded to the rubber chains

Redaelli, M., D'Arienzo, M., Brus, J., Di Credico, B., Geppi, M., Giannini, L., et al. (2018). On the key role of SiO 2 @POSS hybrid filler in tailoring networking and interfaces in rubber nanocomposites. POLYMER TESTING, 65, 429-439 [10.1016/j.polymertesting.2017.12.022].

On the key role of SiO 2 @POSS hybrid filler in tailoring networking and interfaces in rubber nanocomposites

Redaelli, M;D'Arienzo, M
;
Di Credico, B;Panattoni, F;Scotti, R;Morazzoni, F
2018

Abstract

The present study provides a comprehensive investigation at the micro and nanoscale of the interface between hybrid SiO2@POSS nanofiller, where silica nanoparticles (NPs) and POSS nanocages are intimately interconnected, and Styrene Butadiene Rubber (SBR). SEM and AFM inspection and, more in depth, solid state 1H NMR revealed a remarkable fraction of rigid rubber close to the SiO2@POSS surfaces, which increases with the curing temperature. Instead, a reduced amount of immobilized rubber was detected for SBR/SiO2+POSS nanocomposites, obtained by simply mixing SBR, SiO2 and POSS. The results allowed us to propose a model for the network formation in C-SBR/SiO2@POSS. This is based on the progressive activation by dicumylperoxide (DCP) of the methacryl functionalities of POSS nanounits which, being closely connected to SiO2 NPs in SiO2@POSS, promote crosslinking in proximity of the filler surfaces, and lead to the generation of a tight network strongly bonded to the rubber chains
Articolo in rivista - Articolo scientifico
POSS/rubber nanocomposites
English
2018
65
429
439
reserved
Redaelli, M., D'Arienzo, M., Brus, J., Di Credico, B., Geppi, M., Giannini, L., et al. (2018). On the key role of SiO 2 @POSS hybrid filler in tailoring networking and interfaces in rubber nanocomposites. POLYMER TESTING, 65, 429-439 [10.1016/j.polymertesting.2017.12.022].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/184996
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