Ionic liquid functionalized graphene oxide for enhancement of styrene‐butadiene rubber nanocomposites

Abstract

Ionic liquid 1‐allyl‐3‐methyl‐imidazolium chloride (AMICl) is used to fine‐tune the surface properties of graphene oxide (GO) sheets for fabricating ionic liquid functionalized GO (GO‐IL)/styrene‐butadiene rubber (SBR) nanocomposites. The morphology and structure of GO‐IL are characterized using atomic force microscope, X‐ray diffraction, differential scanning calorimetry, X‐ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, UV‐vis spectra and Raman spectra. The interaction between GO and AMICl molecules as well as the effects of GO‐IL on the mechanical properties, thermal conductivity and solvent resistance of SBR are thoroughly studied. It is found that AMICl molecules can interact with GO via the combination of hydrogen bond and cation–π interaction. GO‐IL can be well‐dispersed in the SBR matrix, as confirmed by X‐ray diffraction and scanning electron microscope. Therefore, the SBR nanocomposites incorporating GO‐IL exhibit greatly enhanced performance. The tensile strength, tear strength, thermal conductivity and solvent resistance of GO‐IL/SBR nanocomposite with 5 parts per hundred rubber GO‐IL are increased by 505, 362, 34 and 31%, respectively, compared with neat SBR. This method provides a new insight into the fabrication of multifunctional GO‐based rubber composites. Copyright © 2016 John Wiley & Sons, Ltd.

Impact of various oxidation degrees of graphene oxide on the performance of styrene–butadiene rubber nanocomposites

“…As the most widely used synthetic rubber, styrene–butadiene rubber (SBR) has been applied in tire tread, adhesive tape, rubber hose, medical equipment, and so forth. To satisfy the increasingly demand in practical application, reinforcements of rubbers by incorporation of nanofillers have been intensively investigated. As previous reported, nanoparticles such as carbon black (CB) , silica , carbon nanotubes (CNTs) , cellulose nanocrystals (CNCs) , graphene are usually considered as ideal reinforcing fillers for SBR matrix, in virtue of their small dimension and high specific surface area .…”

Nanocavitation in silica filled styrene‐butadiene rubber regulated by varying silica‐rubber interfacial bonding

“…where K is a constant. In Equation 7, I p is defined by I p = I − I F , and it can be determined by Equation 8.…”

“…Widespread interest in rubber nanocomposites has been fueled by their promise of extraordinary mechanical performance, which encouraged a great deal of effort being devoted to understanding the reinforcing mechanism of nanoparticles. Notably, interfacial interactions between nanoparticles and polymer matrix are always considered to be of vital importance, and the properties of rubber materials can be well tailored by adding nanoparticles of varying interfacial strength to suit the application concerned .…”

Enhanced strength and toughness of polyurethane rubber by introducing hydrogen bond sacrificial units at rubber‐graphene interfaces

“…Inspired by the structure of natural biomaterials, researchers have used appropriate strategies at the elastomer‐filler interfaces to construct the sacrificial bonds and hidden length, which is similar to natural biomaterials, in order to obtain both strength and toughness of composites in recent years. Although the strengths of the secondary sacrificial bonds, such as ionic bond, π‐cation interaction, π‐π conjugate interaction, and van der Waals force (including hydrogen bond), are relatively weak, effective transfer of interface load and strength enhancement of composites can also be achieved through reasonable design of sacrificial bonds and appropriate matching of the number of sacrificial bonds. Unlike the construction of covalent bonds in composites system, these noncovalently sacrificial bonds can be dissociated and destroyed during the strain process to dissipate additional strain energy, thereby the toughness and ductility of the materials are ensured.…”