Irradiation vulcanized styrene-butadiene rubber/nanoscale silica composites

Abstract

This paper investigated the styrene butadiene rubber (SBR)/nanoscale silica (SiO 2 ) composites vulcanized by electron-beam irradiation. Infrared spectra of the Si-O bond of SiO 2 before and after irradiation were studied, and the infrared absorption peak of the Si-O bond of the electron beam irradiated SBR/SiO 2 nanocomposites showed a blue shift of 20 cm −1 compared with that of SiO 2 before irradiation, whereas the absorption intensity decreased, indicating a change of interaction occurring between SiO 2 and SBR macromolecules. This paper also studied the effects of irradiation dose and SiO 2 filler loading on crosslink density and some mechanical properties of the irradiated SBR/SiO 2 composites. With the irradiation dose increasing, tear strength of the irradiated SBR/SiO 2 composites increased while crosslink density and tensile strength increased whole in the range of 300 kGy. With SiO 2 filler loading increasing, crosslink density, tensile strength and tear strength of the irradiated SBR/SiO 2 composites increased.

Effect of electron beam irradiation on structure and properties of styrene-butadiene rubber

“…These data were compared with Wang's findings (Wang et al, 2009;Wang et al, 2016). He investigated the crosslink density of radiation cured SBR with a magnetic resonance crosslink density spectrometer (MRCDS).…”

“…Nowadays, the most commonly used type of radiation-induced modification of polymers is crosslinking (Clough, 2001). Among polymers prone to crosslink, there is a large group of rubbers, including hydrogenated acrylonitrile-butadiene rubber (HNBR) (Bik et al, 2004;Zagórski, 2004;Das et al, 2005), acrylonitrile-butadiene rubber (NBR) (Hill et al, 1996;Yasin et al, 2002;Stephan et al, 2007;Vijayabaskar et al, 2008), styrene-butadiene rubber (SBR) (Witt, 1959;Anderson, 1960;Shaltout, 2009;Wang et al, 2009;Ali et al, 2013;Wang et al, 2016;Moustafa et al, 2011), natural rubber (NR) (Moustafa et al, 2011;Charlesby and von Arnim, 1957;Bauman, 1960;Mullins and Turner, 1960;Minoura and Asao, 1961;Manaila et al, 2014), ethylenepropylene copolymer (EPM) and ethylene-propylene-diene terpolymer (EPDM) (Geissler et al, 1978;Vroomen et al, 1991;Zaharescu and Podinǎ, 2001;Chowdhury and Banerji, 2005), polybutadiene (BR) (Parkinson and Sears, 1967;Kozlov et al, 1969;Hayashi et al, 1980;Shen et al, 1995), chloroprene rubber (CR) (Hill et al, 1993), silicone rubber (Frounchi et al, 2006). The properties of rubbers, such as hardness, tensile strength and elongation at break, are strongly dependent on the presence of crosslinks (Coran, 2013), therefore irradiation of rubbers has a profound effect on their performance.…”

Preparation and properties of a bismaleimide resin modified with a propargyl compound for electron beam irradiation curing

“…6 The physicomechanical properties of the polymers with C=C bonds along the main chains could increase with increasing EB irradiation dose. 7,8 However, higher examined irradiation dose (1000 kGy) had a deteriorating effect on the nanocomposite properties. Epoxy resin is a widely used thermosetting resin that exhibits irradiation reactivity based on the cationic curing reaction.…”

Alteration of matrix curing characteristics and its role in extension of hydrodynamic equation for predicting viscoelastic properties of nitrile rubber/silica nanocomposites

“…Significant reduction of crosslinking density due to filler‐curing agent interactions has been reported for styrene‐butadiene‐styrene block copolymer/silica nanocomposites, for nanocomposites containing copper nano particles, and for carbon black‐filled ethylene‐propylene‐diene monomer using NMR spectroscopy. By contrast, enhancement of crosslinking density has been reported because of filler presence in some elastomeric matrices such as NBR/silica cured via an ionic liquid, for the styrene butadiene rubber/nanoscale silica (SiO 2 ) composites vulcanized by electron‐beam irradiation, and for organoclay‐filled styrene butadiene rubber/ethylene‐propylene‐diene monomer cross‐linked by gamma radiation …”