Multi-layer graphene oxide synergistically modified by two coupling agents and its application in reinforced natural rubber composites

Abstract

Multi-layer graphene oxide (MGO) was co-modified with bis-(P,P-bis-ethylhexyldiphosphato)ethanediolato titanate triethanolamino chelate solution (NDZ-311w) and bis-(g-triethoxysilylpropyl)tetrasulfide (Si-69). Then the co-modified MGO was incorporated into natural rubber (NR) by conventional two-roll mill mixing to prepare MGO/NR composites. The large macromolecule of NDZ-311w is able to efficiently intercalate the layers and increase the interlamellar space of MGO, subsequently resulting in the exfoliation of MGO into thinner sheets with better dispersity. Moreover, the oxygen-containing polar groups of MGO can be largely consumed by Si-69, which enhances the interfacial interaction between MGO and the NR matrix and improves the mechanical properties of the MGO/NR composites. Compared to pure natural rubber, the tensile strength, the stress at 300% strain, and tear resistance of co-modified MGO/NR composites are increased by 26%, 98% and 15%, respectively. Fig. 9 (a) The stress-strain curves of cured MGO/NR composites and pure NR, (b) elongation at break, tensile strength, stress at 100% strain, stress at 300% strain, and tear strength of MGO/NR composites and pure NR.This journal is

A combined experimental and molecular dynamics simulation study on customizing surface chemistry of graphene oxide toward high‐performance natural rubber composites

“…For instance, Jose and Susamma 10 modified GO with ammonia, and 0.5 phr of the resulting aminefunctionalized GO improved the tensile strength of NR by almost 70%. Jiang et al 11 synthesized multilayer GO with bis(P,P-bis-ethylhexyldiphosphato)ethanediolato titanate triethanolamine chelate solution (NDZ-311w) and bis(γ-triethoxysilylpropyl)tetrasulfide (Si-69). Tensile strength, modulus at 300% strain and tear resistance of NR with 3 phr multilayer GO increased by 26%, 98% and 15%, respectively.…”

Rivet-Inspired Modification of Aramid Fiber by Decorating with Silica Particles to Enhance the Interfacial Interaction and Mechanical Properties of Rubber Composites

“…Natural rubber (NR), an important biopolymer, has been presented as one of the most attractive materials owing to its wonderful properties, such as great elasticity and flexibility, antivirus permeation, low cost and corrosion resistance [ 1 , 2 , 3 ]. However, NR usually needs to be reinforced with various fillers for most practical applications in diverse areas (e.g., tires, sealing material, sport equipment, surgical gloves and adhesives), due to its inherent low strength and modulus [ 4 , 5 ]. For decades, SiO 2 particles have been widely applied as active fillers in rubber composites to enhance their mechanical properties and to deliver multi-functional characteristics [ 6 , 7 ].…”