Flexible high-loading particle-reinforced polyurethane magnetic nanocomposite fabrication through

被引：56

作者：

Guo, Zhanhu ^{[1
]}

Park, Sung

Wei, Suying

Pereira, Tony

Moldovan, Monica

Karki, Amar B.

Young, David P.

ThomasHahn, H.

机构：

[1] Univ Calif Los Angeles, Multifunct Composites Lab, Dept Aerosp & Mech Engn, Los Angeles, CA 90095 USA

[2] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA

[3] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

来源：

NANOTECHNOLOGY | 2007年 / 18卷 / 33期

关键词：

D O I：

10.1088/0957-4484/18/33/335704

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Flexible high-loading nanoparticle-reinforced polyurethane magnetic nanocomposites fabricated by the surface-initiated polymerization (SIP) method are reported. Extensive field emission scanning electron microscopic (SEM) and atomic force microscopic (AFM) observations revealed a uniform particle distribution within the polymer matrix. X-ray photoelectron spectrometry (XPS) and differential thermal analysis (DTA) revealed a strong chemical bonding between the nanoparticles and the polymer matrix. The elongation of the SIP nanocomposite under tensile test was about four times greater than that of the composite fabricated by a conventional direct mixing fabrication method. The nanocomposite shows particle-loading-dependent magnetic properties, with an increase of coercive force after the magnetic nanoparticles were embedded into the polymer matrix, arising from the increased interparticle distance and the introduced polymer-particle interactions.

引用

页数：8

共 41 条

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