Effect of bis(triethoxysilylpropyl) tetrasulfide (TESPT) on properties of carbon nanotubes and conductive carbon black hybrid filler filled natural rubber nanocomposites

Nanomaterials have engaged response from the scientific world in recent decades due to their exceptional physical and chemical properties counter to their bulk. They have been widely used in a polymer matrix to improve mechanical, thermal, barrier, electronic and chemical properties. In rubber nanocomposites, nanofillers dispersion and the interfacial adhesion between polymer and fillers influences the composites factual properties. In the present work, a comparison of the hybrid effects of carbon black with two different nanofillers (graphene oxide and nanoclay) was studied. The 70/30 composition of chlorobutyl rubber/natural rubber elastomer blend was taken as per the blend composition optimized from our previous studies. The hybrid effects of graphene oxide and nanoclay in dispersing the nanofillers were studied mainly by analyzing nanocomposite barrier properties. The results confirm that the combined effect of carbon black with graphene oxide and nanoclay could create hybrid effects in decreasing the gas permeability. The prepared nanocomposites which partially replace the expensive chlorobutyl rubber can be used for tyre inner liner application. Additionally, the reduction in the amount of carbon black in the nanocomposite can be an added advantage of considering the environmental and economic factors.

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Understanding the reinforcement and dissipation of natural rubber compounds filled with hybrid filler composed of carbon black and silica

Chinese Journal of Polymer Science ◽

10.1007/s10118-017-1987-5 ◽

2017 ◽

Vol 35 (11) ◽

pp. 1436-1446 ◽

Cited By ~ 24

Author(s):

Yi-hu Song ◽

Ling-bin Zeng ◽

Qiang Zheng

Keyword(s):

Carbon Black ◽

Natural Rubber ◽

Hybrid Filler ◽

Rubber Compounds

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EFFECT OF CELLULOSE FIBER SURFACE TREATMENT TO REPLACE CARBON BLACK IN NATURAL RUBBER HYBRID COMPOSITES

Rubber Chemistry and Technology ◽

10.5254/rct.21.78988 ◽

2021 ◽

Author(s):

Hossein Kazemi ◽

Frej Mighri ◽

Keun Wan Park ◽

Slim Frikha ◽

Denis Rodrigue

Keyword(s):

Carbon Black ◽

Natural Rubber ◽

Surface Treatment ◽

Hybrid Composites ◽

Tensile Modulus ◽

Fiber Surface ◽

Cellulose Fiber ◽

Cellulose Fibers ◽

Infrared Spectrometry ◽

Hybrid Filler

ABSTRACT In recent years, cellulose fibers have attracted considerable attention as biofillers for natural rubber (NR) composites. However, neat cellulose cannot be used as a substitute for conventional fillers due to its poor compatibility with NR. Therefore, a new surface treatment via maleic anhydride grafted to polyisoprene (MAPI) in solution was developed to improve the filler–matrix interaction. Different contents of carbon black (CB) and cellulose fibers (before and after modification) were used as a hybrid filler system to investigate the possibility of CB substitution in NR composites. First, contact angle, Fourier transformed infrared spectrometry (FTIR), and scanning electron microscopy (SEM) techniques were used to confirm the successful cellulose surface treatment. Second, morphological analysis, Payne effect, and swelling behavior of the rubber compounds in toluene confirmed the effect of cellulose treatment on improving the interfacial filler–matrix adhesion. Finally, the results showed that the composite filled with 20 phr modified cellulose and 20 phr CB (50% replacement of CB) exhibited even better results than the composite filled with 40 phr of CB, since the tensile strength was only 7% lower, but the elongation at break, tensile modulus at 100%, and storage modulus at 25 °C were respectively 35%, 24%, and 22% higher.

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