New Vegetable Oils with Different Fatty Acids on Natural Rubber Composite Properties

Abstract

Owing to the toxicity of polycyclic aromatic (PCA) oils, much attention has been paid to the replacement of PCA oils by other nontoxic oils. This paper reports comparative study of the effects of new vegetable oils, i.e., Moringa oil (MO) and Niger oil (NO), on rheological, physical and dynamic properties of silica–filled natural rubber composite (NRC), in comparison with petroleum–based naphthenic oil (NTO). The results reveal that MO and NO exhibit higher thermal stability and better processability than NTO. Cure characteristics of the rubber compounds are not significantly affected by the oil type. It is also found that the NRCs containing MO or NO have better tensile strength and lower dynamic energy loss than the NRCs containing NTO. This may be because both MO and NO improve filler dispersion to a greater extent than NTO as supported by storage modulus and scanning electron microscopy results. Consequently, the present study suggests that MO and NO could be used as the alternative non–toxic oils for NRC without any loss of the properties evaluated.

Application of Different Vegetable Oils as Processing Aids in Industrial Rubber Composites: A Sustainable Approach

“…Another attractive way to replace petroleum-based NTOs in NR/silica composites is to use new vegetable oils, such as niger oil (NO) and moringa oil (MO). 21 At lower plasticizer loading level (0 to 9 phr), the values of torque difference and mechanical properties were found to be higher for vegetable oil (NO or MO)-based NR/silica composites than NTO-based NR/silica composites. As shown in Figure 3, the chemical interaction between polar ester groups of vegetable oils and silanol groups of silica led to satisfactory dispersion of silica within the NR matrix.…”

“…For this purpose, the rising trend of utilizing vegetable oils as a green extender or plasticizer has become the most interesting approach in the rubber industry. Table enlists the examples of different filled rubber composites based on vegetable oils. ,,− …”

“…Another attractive way to replace petroleum-based NTOs in NR/silica composites is to use new vegetable oils, such as niger oil (NO) and moringa oil (MO) . At lower plasticizer loading level (0 to 9 phr), the values of torque difference and mechanical properties were found to be higher for vegetable oil (NO or MO)-based NR/silica composites than NTO-based NR/silica composites.…”

Vegetable oil extended emulsion styrene butadiene rubbers for passenger car radial tire tread application

“…[8][9][10][11][12] were observed for Moringa and Niger oils with respect to Naphthenic oil based natural rubber-silica compound and have also shown better filler dispersion and rolling resistance. 13 Various techniques are available to modify vegetable oils to achieve desired functionality and properties. These techniques include blending, fractionation, hydrogenation, chemical catalyzed transesterification, enzyme catalyzed transesterification, etc.…”

Oil plant genomes: current state of the science

“…1). With the growing world population and increasing industrialization, the demand for vegetable oils is increasing quickly (Chapman and Ohlrogge, 2012;Gunstone, 2013;Haslam et al, 2013;Boonrasri et al, 2021;Silva et al, 2021;Summers et al, 2019;Taheripour and Tyner, 2020).…”