Natural rubber/graphene oxide composites: Effect of sheet size on mechanical properties and strain-induced crystallization behavior

Abstract

Abstract. In order to analyze the influence of the lateral size of graphene oxide (GO) on the properties of natural rubber/ graphene oxide (NR/GO) nanocomposites, three different sized graphene oxide sheets, namely G1, G2 and G3 were used to fabricate a series of NR/GO nanocomposites by latex mixing. The results indicate that adding GO can remarkably increase the modulus of NR. The enhancement of modulus is strongly dependent on the size of GO sheets incorporated. G1 with smallest sheet size gives the maximum reinforcement effect compared with G2 and G3. Dynamic mechanical measurement and swelling ratios (Q f /Q g ) indicate that G1 has stronger interfacial interaction with NR. XRD shows G1 is more effective in accelerating the strain-induced crystallization (SIC) of NR. The strong interfacial interaction facilitates the stress transfer and strain-induced crystallization, both of which lead to the improved modulus.

Mechanical and Electrical Properties of Elastomer Nanocomposites Based on Different Carbon Nanomaterials

“…Analysis of tan δ peaks showed little to no change in T g with loading but the authors mention that the shape and height of the peak change significantly with incorporation of GO platelets which they attribute to favorable polymer-filler interactions. Wu et al [96] also prepared a series of NR/GO composites filled with different GO sizes through latex co-coagulation technology in order to evaluate the effect of GO size on the mechanical properties of the resulting composites. The storage modulus at 20 • C of neat NR and of the composites filled with 2 phr of GO having three different sizes (92.68, 164.39 and 323.74 nm in the composites) are 1.01, 1.82, 1.71 and 1.52 MPa, respectively.…”

“…Analysis of tan δ peaks showed little to no change in Tg with loading but the authors mention that the shape and height of the peak change significantly with incorporation of GO platelets which they attribute to favorable polymer-filler interactions. Wu et al [96] also prepared a series of NR/GO composites filled with different GO sizes through latex co-coagulation technology in order to evaluate the effect of GO size on the mechanical properties of the resulting composites. All the studies reported above, point out some discrepancies and contradictory results due to the fact that the composite properties are affected by several factors including the type of particles, the type of polymer, the interfacial interactions and more significantly the filler dispersion that depends on the processing techniques.…”

Thermal sensitivity of carbon nanotube and graphene oxide containing responsive hydrogels

“…The outstanding mechanical and conductive properties of carbon nanoparticles (CNPs), together with their unique structure and low density, place them among the most common fillers. Carbon nanofiber and carbon nanotubes (CNT) [14][15][16][17][18][19][20] 1,2 , N. Miklósi 1 and its derivatives [21][22][23][24], mainly graphene oxide (GO), have attracted marked interest in the last few years. In biomedical applications, however, the uncertainty surrounding the toxicity of CNTs [14] could affect choices of nanocarbon filler.…”

Enhanced oil resistance and mechanical properties of nitrile butadiene rubber/lignin composites modified by epoxy resin

“…Besides, to some extent the formation of lignin‐F51 networks makes the rubber composite compact, which means that there were less empty spaces or voids in the matrix, and the diffusion of solvent molecules would be hindered, thus less solvent get absorbed and the Q f /Q g values would decrease. Since the lower Q f /Q g values mean a higher extent of the interaction between the filler and the rubber matrix . We can conclude that interaction between the lignin‐F51 networks and the rubber matrix become stronger when the lignin‐F5 networks become stronger.…”