Expanded graphite preparation

In Situ Intercalative Polymerization A variety of polymer nanocomposites have been prepared using this method, that is, PS/graphene, PMMA/expanded graphite, poly(styrene sulfonate) (PSS)/layered double hydroxyl (LDH), PI/LDH, and PET/LDH. 

Wang J, Wu M, Li Y, Luo F, Chen F, Chai S, et al. Preparation of expanded graphite/poly (phenylene sulhde) composites with high... 

The addition of nanoparticles to synthetic mbber resulting in enhancement in thermal, stiffness and resistance to fracture is one of the most important phenomena in material science technology. Thermal and mechanical properties of clays mul-tiwalled carbon nanotubes reinforced ethylene vinyl acetate (EVA) prepared through melt blending showed synergistic effect in properties [86]. Malas et al. reported (SBR/BR)/expanded graphite (EG) and black carbon (CB) nanocomposites by melt blending, this study demonstrated that the presence of EG improvement thermo-mechanical properties and the presence of CB are a factor important to... 

Gerorge, J.J., Bhowmick, A.K. Ethylene vinyl acetate/expanded graphite nancomposite by solution intercalation preparation, characterization and properties. J. Mater. Sci. 43, 702-708 (2009)... 

Shen et al. [130] prepared maleic anhydride grafted polypropylene (PP)/ expanded graphite nanocomposites by solution blending. The conductive performance of PP was improved significantly. 

Apparently, graphite can be pretreated to improve its suitability as the support for catalyst preparation. The pretreatment included partial combustion followed by the additional oxidation using solutions of HNO3, Na hypochlorite and H2O2. After pretreatments, the amount of active metals that could be added to the support was enhanced. Li et al succeeded in preparation of the expanded graphite from flake graphite. The former was found to be a suitable support for various catalysts. Moreover, catalytically active metals... 

Very effective flame retardant data were obtained with styrene-butyl acrylate copolymer/graphite oxide (St-BA/GO) nanocomposites. "- The GO was prepared by oxidation of expandable graphite, and the St-BA/GO nanocomposites (GO content of up to 4% mass fraction) were synthesized by exfoliation- adsorption of monomer followed by in situ emulsion polymerization. The distribution of the GO particles was examined by XRD, TEM, and electron diffraction exfoliated GO layers in crystalline structures were observed. The thermo-gravimetric analysis (TGA) data show a slight increase in thermal stability (up to 15°C with a 3% mass fraction of GO). Significant reduction in heat release rate by increasing GO content has been reported all nanocomposites reduced about 40% of total heat released compared with that of St-BA, as shown in Figures 10.14 and 10.15. 

Zhao, Y.F., Xiao, M., Wang, S.J., Ge, X.C., Meng, Y.Z., 2007. Preparation and properties of electrically conductive PPS/expanded graphite nanocomposites. Composites Science and Technology 67, 2528-2534. 

Zheng, G., Wu, J., Wang, W., Pan, C., 2004. Characterizations of expanded graphite/polymer composites prepared by in situ polymerization. Carbon 42, 2839—2847. 

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