物理化学学报2011，Vol.27Issue(5)：1267-1272,6.
磁性高强度聚丙烯酰胺/Fe3O4纳米复合水凝胶
Magnetic Polyacrylamide/Fe3O4 Nanocomposite Hydrogel with High Mechanical Strength
摘要
Abstract
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 good 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 good shape recoverability.关键词
水凝胶/Fe3O4/磁性/机械强度Key words
Hydrogel/ Fe3O4/ Magnetism/ Mechanical strength分类
化学化工引用本文复制引用
相梅,贺昌城,汪辉亮..磁性高强度聚丙烯酰胺/Fe3O4纳米复合水凝胶[J].物理化学学报,2011,27(5):1267-1272,6.基金项目
国家自然科学基金(50673013)及北京市有机化学重点学科资助项目 （50673013）
