Structure, micromechanical and magnetic properties of polycarbonate nanocomposites

International Conference on Functional Materials and Nanotechnologies 2013

材料科学;物理学

Maniks, J.^1 ; Zabels, R.^1 ; Meri, R Merijs^2 ; Zicans, J.^2

Institute of Solid State Physics, University of Latvia, Latvia^1

Institute of Polymer Materials, Riga Technical University, Riga, Latvia^2

关键词: Ethylene vinyl acetates;    Magnetic polymers;    Nanoindentation tests;    Plastic indentation;    Polycarbonate nanocomposites;    Remanent magnetization;    Strengthening effect;    Structural studies;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/49/1/012012/pdf
DOI  :  10.1088/1757-899X/49/1/012012

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The current study evaluates the applicability of polycarbonate (PC) for development of magnetic polymer nanocomposites with CoFe2O4nanofiller, 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 CoFe2O4saturation 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.