Viscosity oxide-based nanocomposites

A detailed II NMR kinetic investigation132 of the polymerization of aniline in DC1/D20 solution has revealed no significant differences between the rates of dispersion polymerization using a polyethylene oxide)-based stabilizer and standard precipitation polymerization in the absence of any stabilizer. However, faster polymerization of aniline was observed in the presence of 20 nm silica particles, leading to PAn-silica nanocomposites. In contrast, slower polymerization occurred in the presence of surfactant micelles to form surfactant-stabilized PAn particles, presumably owing to the high solution viscosity. 

In the recentiy years some researches demonstrated the important effect of zinc oxide nanorods (ZnO-NR) incorporating them in a thermoplastic sago starch-based material (Nafchi et al. 2012, 2013 Rahman et al. 2013). In particular, (Nafchi et al. 2012, 2013) investigated physicochemical properties of nanocomposites formed by sago starch and different concentration of ZnO-NR (1-5 wt%). The incorporation of low concentration of this nanofiller significantly increased the viscosity of the solution and decreased water vapor permeability of the composites to less than one... 

In situ polymerisation of the polymer matrix is an attractive method of preparing graphene-based composites although often solvents are used to reduce the viscosity of the dispersions. For example, intercalative polymerisation of methyl methacrylate and epoxy resins has been achieved with graphene oxide to produce nanocomposites with enhanced properties. It has also been possible to use in situ polymerization produce polyethylene- and polypropylene-matrix graphene oxide nanocomposites. The technique of grafting poly(methyl methacrylate) chains onto graphene oxide has also been employed to make the filler compatible with the polymer matrix. " ... 

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