Structure, micromechanical and magnetic properties of polycarbonate nanocomposites

• Published in: IOP conference series. Materials Science and Engineering Vol. 49; no. 1; pp. 12012 - 4
• Main Authors: Maniks, J, Zabels, R, Meri, R Merijs, Zicans, J
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.01.2013
• Subjects: Acetates; Clustering; Cobalt ferrites; Coercive force; Coercivity; Elastomers; Ethylene vinyl acetates; Hysteresis loops; Magnetic properties; Magnetic saturation; Magnetism; Magnetization; Materials science; Nanocomposites; Nanoindentation; Nanostructure; Polycarbonate resins; Polycarbonates; Reduction
• ISSN: 1757-8981; 1757-899X
• DOI: 10.1088/1757-899X/49/1/012012

The current study evaluates the applicability of polycarbonate (PC) for development of magnetic polymer nanocomposites with CoFe2O4 nanofiller, the amount of which was changed from 0 to 5 wt. %. Ethylene-vinyl acetate elastomer in the amount of 10 wt. % was added as toughener. Upon introduction of the magnetic filler a magnetic hysteresis loop was observed: at 5 wt.% of CoFe2O4 saturation magnetization of the nanocomposite was 2,2 emu/g, remanent magnetization was 0,8 emu/g and coercivity is 1200 G. Nanoindentation tests showed that nanofiller-reinforced samples maintain reasonable plasticity characterized by work of plastic indentation, while their modulus and hardness were improved by up to 14% and 20%, correspondingly. Structural study revealed clustering of the nanofiller at the contents above 2 wt.% that led to reduction of strengthening effect.