Mechanical Properties of Elastomeric Terpolymer Nanocomposites Containing Nano-SiO2

Shi Biao Zhou; An Guo Xiao

doi:10.4028/www.scientific.net/AMR.236-238.2012

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Mechanical Properties of Elastomeric Terpolymer Nanocomposites Containing Nano-SiO2

Abstract:

Nanocomposites were obtained by mixing elastomeric terpolymer and nano-SiO₂ in double-screw extruder at 130-150 °C, in which elastomeric terpolymer was prepared by terpolymerization of poly(methyl methacrylate (PMMA) macromonomer, butyl acrylate(BA), and acrylic acid(AA) in benzene using azobisisobutyronitrile (AIBN) as initiator. The results indicated that increasing the amount of PMMA, the molecular weight of PMMA and terpolymers as well as the content of carboxylic acid were favorable to increase the mechanical properties of nanocomposites. In addition, the tensile strength and the modulus at 300% elongation of nanocomposites reach to a maximum while the mass ratio of nano-SiO₂ to terpolymer is 3%.