在Fe(CO)5热分解法制备煤油基金属铁磁性液体中,采用两种表面活性剂OA(油酸)与T154A(聚异丁烯丁二酰亚胺)以质量比1∶1混合后共同修饰纳米铁磁性颗粒,制备分散性好、磁饱和强度高的磁性液体.制备的样品由XRD、TEM、VSM和FTIR进行表征.从表征结果知,制备出的磁性纳米颗粒主要为金属铁;磁性纳米颗粒呈现较为规则的球形颗粒,分散性好,平均粒径约为10nm;磁性液体的磁饱和强度Ms约为63emu/g,矫顽力和剩磁几乎为零;与OA单独修饰制备的磁性液体相比,磁性纳米颗粒表面同时被OA+T154A修饰的磁性液体在抗氧化性、分散性和磁饱和强度方面皆有所提高.
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