Citation: XIANG Mei, HE Chang-Cheng, WANG Hui-Liang. Magnetic Polyacrylamide/Fe₃O₄ Nanocomposite Hydrogel with High Mechanical Strength[J]. Acta Physico-Chimica Sinica, ;2011, 27(05): 1267-1272. doi: 10.3866/PKU.WHXB20110429 shu

Magnetic Polyacrylamide/Fe₃O₄ Nanocomposite Hydrogel with High Mechanical Strength

1.
College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China

Received Date: 20 October 2010
Available Online: 14 March 2011
Fund Project: 国家自然科学基金(50673013) (50673013)

Polyacrylamide (PAAm) hydrogels with very high mechanical strength were prepared using radiation-peroxidized micelles that were formed by surfactant molecules as initiating and crosslinking centers. PAAm/Fe₃O₄ nanocomposite hydrogels were obtained by introducing Fe₃O₄ nanoparticles into PAAm hydrogels through an in situ chemical co-precipitation method. Scanning electron microscopy (SEM) investigations showed that the nanoparticles were homogeneously distributed and the particles were about 30 nm in size. X-ray diffraction (XRD) analysis showed that the obtained nanoparticles were spinel Fe₃O₄. The PAAm/Fe₃O₄ nanocomposite hydrogels showed superparamagnetism. The ferrogels also had od mechanical properties, the elongation at break of some gels could be as high as 1200% and the maximum tensile strength was about 0.10 MPa, and they exhibited very od shape recoverability.
- Hydrogel,
- Fe₃O₄,
- Magnetism,
- Mechanical strength
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Magnetic Polyacrylamide/Fe3O4 Nanocomposite Hydrogel with High Mechanical Strength

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通讯作者: 陈斌, bchen63@163.com

Magnetic Polyacrylamide/Fe₃O₄ Nanocomposite Hydrogel with High Mechanical Strength