Comparative study on the natural rubber nanocomposites reinforced with carbon black nanoparticles and graphite oxide nanosheets

Abstract

To achieve dramatic improvements in the performance of natural rubber (NR), the graphite oxide nanosheets (GON)-reinforced NR nanocomposites have been prepared through solution mixing on the basis of pretreatment of graphite. The mechanical and thermal properties of GON/NR nanocomposites were characterized in contrast to the carbon black (CB)/NR nanocomposite. The mechanical properties of the GON-reinforced NR showed a considerable increase compared to the neat NR and traditional CB/NR nanocomposite. The initial modulus of pure NR was increased for up to 53.6% when 7 wt% GON is incorporated. The modulus and strength of NR with GON appear to be superior to those of CB with the same filler content. The dispersion state of the nanofillers into NR was investigated by scanning electron microscopy and X-ray diffraction, and the results indicated that nanofillers have been dispersed homogeneously in the NR matrix. Fourier transform infrared spectra showed possible interfacial interactions between fillers and NR matrix. Differential scanning calorimetry and thermogravimetric analysis showed that the T g and thermal decomposition temperature of NR slightly increased with the addition of the fillers, especially for that of GON/NR nanocomposites. According to this study, application of the physical and mechanical properties of GON to NR can result in rubber products which have improved mechanical, physical, and thermal properties, compared with existing NR products reinforced with CB.

Mechanical, thermal, and dielectric properties of polyvinylidene fluoride nanocomposites fabricated by introducing functional MWCNTs/barium titanate compounding dielectric nanofillers

“…Dielectric constant and energy storage density of the PVDF-HFP/LZO15 composite film were nearly doubled compared to that of neat PVDF-HFP by keeping dielectric losses low. In our previous works, [27][28][29][30] we have found that it is an effective strategy to prepare fillers with different surface physical-chemical properties by functionalizing of fillers and finally to make full use of the multiscale/interface effects between fillers. At present, despite the growing literature on the preparation of functional fillers to improve the dielectric performance of PDNs, they did not systematically investigate on the dielectric performance of PDNs containing different fillers scales and very limited studies are focused on material design of PDNs.…”

Sustainable rubbers and rubber additives

“…They observed that ionic surfactant (sodium dodecyl sulfate) aided in the homogeneous dispersion of the nanofillers in the nanocomposite. Bian et al . compared NR composites based on graphite oxide nanosheets and carbon black.…”

Multifunctional Nanocomposites of Natural Rubber Latex and Carbon Nanostructures

“…al. 51 em nanocompósitos de GO e uma borracha nitrílica, obtiveram aumentos de 3,7 vezes no módulo de elasticidade com a adição de 1,2 % em massa de GO. Galimberti et al 48 também descreveram elevados aumentos de E o a adiç o de a og afite à o a ha sintética, de 0,54 para 6,58 MPa com 12 % de NanoG.…”